diff --git a/.github/workflows/pypi.yml b/.github/workflows/pypi.yml
new file mode 100644
index 0000000..2cc7f8c
--- /dev/null
+++ b/.github/workflows/pypi.yml
@@ -0,0 +1,80 @@
+name: Publish Python distribution to PyPI and TestPyPI
+
+on:
+    pull_request:
+        branches: [ "main" ]
+    push:
+        branches: [ "main", "dev" ]
+        tags: [ "v*" ]
+
+jobs:
+    build:
+        name: Build distribution
+        runs-on: ubuntu-latest
+
+        steps:
+          - uses: actions/checkout@v4
+          - name: Set up Python
+            uses: actions/setup-python@v4
+            with:
+                python-version: "3.x"
+          - name: Install pypa/build
+            run: >-
+                python3 -m
+                pip install
+                build
+                --user
+          - name: Build a binary wheel and a source tarball
+            run: make build
+          - name: Store the distribution packages
+            uses: actions/upload-artifact@v3
+            with:
+                name: python-package-distributions
+                path: dist/
+
+    publish-to-testpypi:
+        name: Publish to TestPyPI
+        needs:
+          - build
+        runs-on: ubuntu-latest
+
+        environment:
+            name: devtest
+            url: https://test.pypi.org/p/nrx
+
+        permissions:
+            id-token: write  # IMPORTANT: mandatory for trusted publishing
+
+        steps:
+          - name: Download all the dists
+            uses: actions/download-artifact@v3
+            with:
+                name: python-package-distributions
+                path: dist/
+          - name: Publish distribution to TestPyPI
+            uses: pypa/gh-action-pypi-publish@release/v1
+            with:
+                repository-url: https://test.pypi.org/legacy/
+
+    publish-to-pypi:
+        name: Publish to PyPI
+        if: startsWith(github.ref, 'refs/tags/')  # only publish to PyPI on tag pushes
+        needs:
+          - build
+        runs-on: ubuntu-latest
+
+        environment:
+            name: release
+            url: https://pypi.org/p/nrx
+
+        permissions:
+            id-token: write  # IMPORTANT: mandatory for trusted publishing
+
+        steps:
+          - name: Download all the dists
+            uses: actions/download-artifact@v3
+            with:
+                name: python-package-distributions
+                path: dist/
+          - name: Publish distribution to TestPyPI
+            uses: pypa/gh-action-pypi-publish@release/v1
diff --git a/.gitignore b/.gitignore
index 843bed1..a54448d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -62,3 +62,4 @@ tests/*/d2/*
 tests/main.conf
 tmp
 demo
+dist
\ No newline at end of file
diff --git a/Makefile b/Makefile
index ee00aca..29e4f66 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,17 @@
 lint:
-	pylint nrx/*.py
+	pylint src/nrx/*.py
+
+build:
+	python3 -m build
+
+pubdev:
+	python3 -m twine upload --repository testpypi dist/*
+
+publish:
+	python3 -m twine upload dist/*
+
+clean:
+	rm dist/*
 
 test-local: test-dc1 test-dc2 test-colo test-site1 test-h88
 test-local-lrg: test-lrg-nb-2-cyjs-latest
@@ -24,7 +36,7 @@ test-args-site-and-sites:
 	@echo "#################################################################"
 	@echo "# Simulteneous use of site and sites should fail"
 	@echo "#################################################################"
-	! ./nrx.py --site dc1 --sites dc1,dc2 -d
+	! ./nrx --site dc1 --sites dc1,dc2 -d
 	@echo
 
 test-dc1-nb-2-cyjs-current:
@@ -33,7 +45,7 @@ test-dc1-nb-2-cyjs-current:
 	@echo "#################################################################"
 	mkdir -p tests/dc1/test && cd tests/dc1/test && rm -rf * && \
 	source ../../.env_current && \
-	../../../nrx.py -c ../nrx.conf -o cyjs -d && \
+	../../../nrx -c ../nrx.conf -o cyjs -d && \
 	diff dc1.cyjs ../data/dc1.cyjs
 	@echo
 
@@ -43,7 +55,7 @@ test-dc1-nb-2-cyjs-latest:
 	@echo "#################################################################"
 	mkdir -p tests/dc1/test && cd tests/dc1/test && rm -rf * && \
 	source ../../.env_latest && \
-	../../../nrx.py -c ../nrx.conf -o cyjs -d && \
+	../../../nrx -c ../nrx.conf -o cyjs -d && \
 	diff dc1.cyjs ../data/dc1.cyjs
 	@echo
 
@@ -53,7 +65,7 @@ test-dc1-nb-2-cyjs-single-site:
 	@echo "#################################################################"
 	mkdir -p tests/dc1/test && cd tests/dc1/test && rm -rf * && \
 	source ../../.env_current && \
-	../../../nrx.py -c ../nrx-no-site.conf -o cyjs --site dc1 -d && \
+	../../../nrx -c ../nrx-no-site.conf -o cyjs --site dc1 -d && \
 	diff dc1.cyjs ../data/dc1.cyjs
 	@echo
 
@@ -63,7 +75,7 @@ test-dc1-nb-2-cyjs-single-sites:
 	@echo "#################################################################"
 	mkdir -p tests/dc1/test && cd tests/dc1/test && rm -rf * && \
 	source ../../.env_current && \
-	../../../nrx.py -c ../nrx-no-site.conf -o cyjs --sites dc1 -d && \
+	../../../nrx -c ../nrx-no-site.conf -o cyjs --sites dc1 -d && \
 	diff dc1.cyjs ../data/dc1.cyjs
 	@echo
 
@@ -73,7 +85,7 @@ test-dc1-dc2-nb-2-cyjs-sites:
 	@echo "#################################################################"
 	mkdir -p tests/dc1/test && cd tests/dc1/test && rm -rf * && \
 	source ../../.env_current && \
-	../../../nrx.py -c ../nrx-no-site.conf -o cyjs --sites dc1,dc2 -d && \
+	../../../nrx -c ../nrx-no-site.conf -o cyjs --sites dc1,dc2 -d && \
 	diff dc1-dc2.cyjs ../data/dc1-dc2.cyjs
 	@echo
 
@@ -82,7 +94,7 @@ test-dc1-cyjs-2-clab:
 	@echo "# DC1: read from CYJS and export as Containerlab"
 	@echo "#################################################################"
 	mkdir -p tests/dc1/test && cd tests/dc1/test && rm -rf * && \
-	../../../nrx.py -c ../nrx.conf -i cyjs -f ../data/dc1.cyjs -d && \
+	../../../nrx -c ../nrx.conf -i cyjs -f ../data/dc1.cyjs -d && \
 	for f in *; do echo Comparing file $$f ...; diff $$f ../data/$$f || exit 1; done
 	@echo
 
@@ -91,7 +103,7 @@ test-dc1-cyjs-2-clab-custom-platform-map:
 	@echo "# DC1: read from CYJS and export as Containerlab using custom platform map"
 	@echo "#################################################################"
 	mkdir -p tests/dc1/test && cd tests/dc1/test && rm -rf * && \
-	../../../nrx.py -c ../nrx.conf -i cyjs -f ../data/dc1.cyjs -M ../platform_map.yaml -d && \
+	../../../nrx -c ../nrx.conf -i cyjs -f ../data/dc1.cyjs -M ../platform_map.yaml -d && \
 	for f in *; do echo Comparing file $$f ...; diff $$f ../custom-clab/$$f || exit 1; done
 	@echo
 
@@ -100,7 +112,7 @@ test-dc1-cyjs-2-graphite:
 	@echo "# DC1: read from CYJS and export as graphite"
 	@echo "#################################################################"
 	mkdir -p tests/dc1/graphite && cd tests/dc1/graphite && rm -rf * && \
-	../../../nrx.py -c ../nrx.conf -i cyjs -f ../data/dc1.cyjs -o graphite -d && \
+	../../../nrx -c ../nrx.conf -i cyjs -f ../data/dc1.cyjs -o graphite -d && \
 	for f in *; do echo Comparing file $$f ...; diff $$f ../data/$$f || exit 1; done
 	@echo
 
@@ -109,7 +121,7 @@ test-dc1-dc2-cyjs-2-graphite:
 	@echo "# DC1 and DC2: read from CYJS and export as graphite"
 	@echo "#################################################################"
 	mkdir -p tests/dc1/graphite && cd tests/dc1/graphite && rm -rf * && \
-	../../../nrx.py -c ../nrx-no-site.conf -i cyjs -f ../data/dc1-dc2.cyjs -o graphite -d && \
+	../../../nrx -c ../nrx-no-site.conf -i cyjs -f ../data/dc1-dc2.cyjs -o graphite -d && \
 	for f in *; do echo Comparing file $$f ...; diff $$f ../data/$$f || exit 1; done
 	@echo
 
@@ -118,7 +130,7 @@ test-dc1-cyjs-2-d2:
 	@echo "# DC1: read from CYJS and export as d2"
 	@echo "#################################################################"
 	mkdir -p tests/dc1/d2 && cd tests/dc1/d2 && rm -rf * && \
-	../../../nrx.py -c ../nrx.conf -i cyjs -f ../data/dc1.cyjs -o d2 -d && \
+	../../../nrx -c ../nrx.conf -i cyjs -f ../data/dc1.cyjs -o d2 -d && \
 	for f in *; do echo Comparing file $$f ...; diff $$f ../data/$$f || exit 1; done
 	@echo
 
@@ -136,7 +148,7 @@ test-dc2-nb-2-cyjs-current:
 	@echo "#################################################################"
 	mkdir -p tests/dc2/test && cd tests/dc2/test && rm -rf * && \
 	source ../../.env_current && \
-	../../../nrx.py -c ../nrx.conf -o cyjs -d && \
+	../../../nrx -c ../nrx.conf -o cyjs -d && \
 	diff dc2.cyjs ../data/dc2.cyjs.current
 	@echo
 
@@ -146,7 +158,7 @@ test-dc2-nb-2-cyjs-latest:
 	@echo "#################################################################"
 	mkdir -p tests/dc2/test && cd tests/dc2/test && rm -rf * && \
 	source ../../.env_latest && \
-	../../../nrx.py -c ../nrx.conf -o cyjs -d && \
+	../../../nrx -c ../nrx.conf -o cyjs -d && \
 	diff dc2.cyjs ../data/dc2.cyjs.latest
 	@echo
 
@@ -155,7 +167,7 @@ test-dc2-cyjs-2-graphite:
 	@echo "# DC2: read from CYJS and export as graphite"
 	@echo "#################################################################"
 	mkdir -p tests/dc2/graphite && cd tests/dc2/graphite && rm -rf * && \
-	../../../nrx.py -c ../nrx.conf -i cyjs -f ../data/dc2.cyjs -o graphite -d && \
+	../../../nrx -c ../nrx.conf -i cyjs -f ../data/dc2.cyjs -o graphite -d && \
 	for f in *; do echo Comparing file $$f ...; diff $$f ../data/$$f || exit 1; done
 	@echo
 
@@ -164,7 +176,7 @@ test-dc2-cyjs-2-cml:
 	@echo "# DC2: read from CYJS and export as CML"
 	@echo "#################################################################"
 	mkdir -p tests/dc2/test && cd tests/dc2/test && rm -rf * && \
-	../../../nrx.py -c ../nrx.conf -i cyjs -f ../data/dc2.cyjs -d && \
+	../../../nrx -c ../nrx.conf -i cyjs -f ../data/dc2.cyjs -d && \
 	for f in *; do echo Comparing file $$f ...; diff $$f ../data/$$f || exit 1; done
 	@echo
 
@@ -182,7 +194,7 @@ test-colo-nb-2-cyjs-current:
 	@echo "#################################################################"
 	mkdir -p tests/colo/test && cd tests/colo/test && rm -rf * && \
 	source ../../.env_current && \
-	../../../nrx.py -c ../nrx.conf -o cyjs -d && \
+	../../../nrx -c ../nrx.conf -o cyjs -d && \
 	diff colo.cyjs ../data/colo.cyjs
 	@echo
 
@@ -192,7 +204,7 @@ test-colo-nb-2-cyjs-latest:
 	@echo "#################################################################"
 	mkdir -p tests/colo/test && cd tests/colo/test && rm -rf * && \
 	source ../../.env_latest && \
-	../../../nrx.py -c ../nrx.conf -o cyjs -d && \
+	../../../nrx -c ../nrx.conf -o cyjs -d && \
 	diff colo.cyjs ../data/colo.cyjs
 	@echo
 
@@ -202,7 +214,7 @@ test-site1-nb-2-cyjs-current:
 	@echo "#################################################################"
 	mkdir -p tests/site1/test && cd tests/site1/test && rm -rf * && \
 	source ../../.env_current && \
-	../../../nrx.py -c ../nrx.conf -o cyjs -d && \
+	../../../nrx -c ../nrx.conf -o cyjs -d && \
 	diff site1.cyjs ../data/site1.cyjs
 	@echo
 
@@ -212,7 +224,7 @@ test-site1-nb-2-cyjs-latest:
 	@echo "#################################################################"
 	mkdir -p tests/site1/test && cd tests/site1/test && rm -rf * && \
 	source ../../.env_latest && \
-	../../../nrx.py -c ../nrx.conf -o cyjs -d && \
+	../../../nrx -c ../nrx.conf -o cyjs -d && \
 	diff site1.cyjs ../data/site1.cyjs
 	@echo
 
@@ -221,7 +233,7 @@ test-site1-cyjs-2-clab:
 	@echo "# Site1: read from CYJS and export as Containerlab"
 	@echo "#################################################################"
 	mkdir -p tests/site1/test && cd tests/site1/test && rm -rf * && \
-	../../../nrx.py -c ../nrx.conf -i cyjs -f ../data/site1.cyjs -o clab -d && \
+	../../../nrx -c ../nrx.conf -i cyjs -f ../data/site1.cyjs -o clab -d && \
 	for f in *; do echo Comparing file $$f ...; diff $$f ../data/$$f || exit 1; done
 	@echo
 
@@ -230,7 +242,7 @@ test-site1-cyjs-2-clab-rename:
 	@echo "# Site1: read from CYJS and export as Containerlab with a custom name"
 	@echo "#################################################################"
 	mkdir -p tests/site1/test && cd tests/site1/test && rm -rf * && \
-	../../../nrx.py -c ../nrx.conf -i cyjs -f ../data/site1.cyjs -o clab --name ABC -d && \
+	../../../nrx -c ../nrx.conf -i cyjs -f ../data/site1.cyjs -o clab --name ABC -d && \
 	for f in *; do echo Comparing file $$f ...; diff $$f ../data/$$f || exit 1; done
 	@echo
 
@@ -240,7 +252,7 @@ test-site1-cyjs-template-2-clab:
 	@echo "#################################################################"
 	mkdir -p tests/site1/test && cd tests/site1/test && rm -rf * && \
 	cat ../data/site1.cyjs.template | envsubst > site1.sonic-vs.cyjs && \
-	../../../nrx.py -c ../nrx.conf -i cyjs -f site1.sonic-vs.cyjs -o clab -d && \
+	../../../nrx -c ../nrx.conf -i cyjs -f site1.sonic-vs.cyjs -o clab -d && \
 	for f in *.yaml; do echo Comparing file $$f ...; diff $$f ../data/$$f || exit 1; done
 	@echo
 
@@ -251,7 +263,7 @@ test-h88-nb-2-cyjs-current:
 	@echo "#################################################################"
 	mkdir -p tests/h88/test && cd tests/h88/test && rm -rf * && \
 	source ../../.env_current && \
-	../../../nrx.py -c ../nrx.conf -o cyjs -d && \
+	../../../nrx -c ../nrx.conf -o cyjs -d && \
 	diff HQ.cyjs ../data/HQ.cyjs.current
 	@echo
 
@@ -261,7 +273,7 @@ test-h88-nb-2-cyjs-latest:
 	@echo "#################################################################"
 	mkdir -p tests/h88/test && cd tests/h88/test && rm -rf * && \
 	source ../../.env_latest && \
-	../../../nrx.py -c ../nrx.conf -o cyjs -d && \
+	../../../nrx -c ../nrx.conf -o cyjs -d && \
 	diff HQ.cyjs ../data/HQ.cyjs.latest
 	@echo
 
@@ -271,7 +283,7 @@ test-h88-nb-2-cyjs-latest-noconfigs:
 	@echo "#################################################################"
 	mkdir -p tests/h88/test && cd tests/h88/test && rm -rf * && \
 	source ../../.env_latest && \
-	../../../nrx.py -c ../nrx.conf -o cyjs -d --noconfigs && \
+	../../../nrx -c ../nrx.conf -o cyjs -d --noconfigs && \
 	diff HQ.cyjs ../data/HQ.cyjs.noconfigs
 	@echo
 
@@ -280,7 +292,7 @@ test-h88-cyjs-2-clab:
 	@echo "# h88: read from CYJS and export as Containerlab"
 	@echo "#################################################################"
 	mkdir -p tests/h88/test && cd tests/h88/test && rm -rf * && \
-	../../../nrx.py -c ../nrx.conf -i cyjs -f ../data/HQ.cyjs -o clab -d && \
+	../../../nrx -c ../nrx.conf -i cyjs -f ../data/HQ.cyjs -o clab -d && \
 	for f in *; do echo Comparing file $$f ...; diff $$f ../data/$$f || exit 1; done
 	@echo
 
@@ -298,7 +310,7 @@ test-lrg-nb-2-cyjs-latest:
 	@echo "#################################################################"
 	mkdir -p tests/lrg/test && cd tests/lrg/test && rm -rf * && \
 	source ../../.env_latest && \
-	../../../nrx.py -c ../nrx.conf -o cyjs --noconfigs -d && \
+	../../../nrx -c ../nrx.conf -o cyjs --noconfigs -d && \
 	diff lrg.cyjs ../data/lrg.cyjs
 	@echo
 
@@ -307,7 +319,7 @@ test-lrg-cyjs-2-graphite:
 	@echo "# LRG: read from CYJS and export as graphite"
 	@echo "#################################################################"
 	mkdir -p tests/lrg/graphite && cd tests/lrg/graphite && rm -rf * && \
-	../../../nrx.py -c ../nrx.conf -i cyjs -f ../data/lrg.cyjs -o graphite -d && \
+	../../../nrx -c ../nrx.conf -i cyjs -f ../data/lrg.cyjs -o graphite -d && \
 	for f in *; do echo Comparing file $$f ...; diff $$f ../data/$$f || exit 1; done
 	@echo
 
diff --git a/README.md b/README.md
index bbe2a85..303a250 100644
--- a/README.md
+++ b/README.md
@@ -20,10 +20,11 @@ This project is in early phase. We're experimenting with the best ways to automa
 
 # Latest capabilities added
 
-The latest release has a significant set of the new capabilities:
-* Ability to create new output formats without a need for **nrx** code changes
-* Mapping between NetBox platform values and node parameters via [`platform_map.yaml`](docs/platform_map.md) file
-* `$HOME/.nr` configuration directory with automatic initialization using `--init` argument
+The latest releases have a significant set of the new capabilities:
+* `0.5.0` PyPA packaging and distribution: `pip install nrx`
+* `0.4.0` Ability to create new output formats without a need for **nrx** code changes
+* `0.4.0` Mapping between NetBox platform values and node parameters via [`platform_map.yaml`](docs/platform_map.md) file
+* `0.4.0` `$HOME/.nr` configuration directory with automatic initialization using `--init` argument
 
 Find detailed release notes on the [Releases page](https://github.com/netreplica/nrx/releases).
 
@@ -102,20 +103,26 @@ The following software versions were tested for compatibility with `nrx`:
 
 # How to install
 
-1. Clone this repository and create Python virtual environment
+## PyPI package (recommended)
 
-    ```Shell
-    git clone https://github.com/netreplica/nrx.git --recursive
-    cd nrx
-    python3.9 -m venv nrx39
-    source nrx39/bin/activate
-    ```
+```Shell
+mkdir -p ~/.venv
+python3.9 -m venv ~/.venv/nrx
+source ~/.venv/nrx/bin/activate
+pip install nrx
+```
 
-2. Install required modules
+## From source code (development)
 
-    ```Shell
-    pip3 install -r requirements.txt
-    ```
+After running the following commands, you will have a working `nrx` command in the current directory.
+
+```Shell
+git clone https://github.com/netreplica/nrx.git --recursive
+cd nrx
+python3.9 -m venv venv
+source venv/bin/activate
+pip install -r requirements.txt
+```
 
 # How to configure
 
@@ -130,8 +137,8 @@ The following software versions were tested for compatibility with `nrx`:
 Command-line arguments take the highest priority.
 
 ```
-./nrx.py --help
-usage: nrx [-h] [-v] [-d] [-I] [-c CONFIG] [-i INPUT] [-o OUTPUT] [-a API] [-s SITE] [-t TAGS] [-n NAME]
+nrx --help
+usage: nrx [-h] [-v] [-d] [-I [VERSION]] [-c CONFIG] [-i INPUT] [-o OUTPUT] [-a API] [-s SITE] [-t TAGS] [-n NAME]
            [--noconfigs] [-k | --insecure] [-f FILE] [-M MAP] [-T TEMPLATES] [-D DIR]
 
 nrx - network topology exporter by netreplica
@@ -140,7 +147,7 @@ optional arguments:
   -h, --help                show this help message and exit
   -v, --version             show version number and exit
   -d, --debug               enable debug output
-  -I, --init                initialize configuration directory in $HOME/.nr and exit
+  -I, --init [VERSION]      initialize configuration directory in $HOME/.nr and exit. optionally, specify a VERSION to initialize with: -I 0.1.0
   -c, --config CONFIG       configuration file, default: $HOME/.nr/nrx.conf
   -i, --input INPUT         input source: netbox (default) | cyjs
   -o, --output OUTPUT       output format: cyjs | clab | cml | graphite | d2 or any other format supported by provided templates
@@ -181,7 +188,7 @@ By default, **nrx** looks up for the following assets in the `$HOME/.nr` directo
 * Configuration file: `nrx.conf`, unless overridden by `--config` argument
 * Templates: `templates`, which can be supplemented by additional paths with `--templates` argument
 
-To initialize the configuration directory, run `nrx.py --init`. This will create the `$HOME/.nr` folder and populate it with a configuration file example and a compatible version of the templates.
+To initialize the configuration directory, run `nrx --init`. This will create the `$HOME/.nr` folder and populate it with a configuration file example and a compatible version of the templates.
 
 # Templates
 
@@ -216,11 +223,11 @@ source nrx39/bin/activate
 
 ## Containerlab example
 
-1. Run `./nrx.py --output clab` to export a topology graph from NetBox in Containerlab format. See [How to configure](#how-to-configure) for details. Here is an example of running `nrx.py` to export a graph for NetBox Site "DM-Albany" from [NetBox Demo](https://demo.netbox.dev) instance:
+1. Run `nrx --output clab` to export a topology graph from NetBox in Containerlab format. See [How to configure](#how-to-configure) for details. Here is an example of running `nrx` to export a graph for NetBox Site "DM-Albany" from [NetBox Demo](https://demo.netbox.dev) instance:
 
     ```Shell
     export NB_API_TOKEN='replace_with_valid_API_token'
-    ./nrx.py --api https://demo.netbox.dev --templates templates --output clab --dir demo --site DM-Albany
+    nrx --api https://demo.netbox.dev --templates templates --output clab --dir demo --site DM-Albany
     ```
 
 2. Now you're ready to start the Containerlab topology. Here is the example for "DM-Albany" site
@@ -229,26 +236,26 @@ source nrx39/bin/activate
     sudo -E containerlab deploy -t demo/DM-Albany.clab.yaml --reconfigure
     ```
 
-3. Without `--output clab` argument, `nrx.py` will save data from NetBox as a CYJS file `<site_name>.cyjs`
+3. Without `--output clab` argument, `nrx` will save data from NetBox as a CYJS file `<site_name>.cyjs`
 
     ```Shell
     export NB_API_TOKEN='replace_with_valid_API_token'
-    ./nrx.py --api https://demo.netbox.dev --site DM-Albany --dir demo
+    nrx --api https://demo.netbox.dev --site DM-Albany --dir demo
     ```
 
-5. If you have a CYJS file, run `./nrx.py --input cyjs --file <site>.cyjs --output clab` to create a Containerlab topology file from the CYJS graph you exported in the previous step. For example, run:
+5. If you have a CYJS file, run `nrx --input cyjs --file <site>.cyjs --output clab` to create a Containerlab topology file from the CYJS graph you exported in the previous step. For example, run:
 
     ```Shell
-    ./nrx.py --input cyjs --file demo/DM-Albany.cyjs --templates templates --output clab --dir demo
+    nrx --input cyjs --file demo/DM-Albany.cyjs --templates templates --output clab --dir demo
     ```
 
 ## Cisco Modeling Labs example
 
-1. Run `./nrx.py --output cml` to export a topology graph from NetBox in CML format. See [How to configure](#how-to-configure) for details. Here is an example of running `nrx.py` to export a graph for NetBox Site "DM-Akron" from [NetBox Demo](https://demo.netbox.dev) instance:
+1. Run `nrx --output cml` to export a topology graph from NetBox in CML format. See [How to configure](#how-to-configure) for details. Here is an example of running `nrx` to export a graph for NetBox Site "DM-Akron" from [NetBox Demo](https://demo.netbox.dev) instance:
 
     ```Shell
     export NB_API_TOKEN='replace_with_valid_API_token'
-    ./nrx.py --api https://demo.netbox.dev --templates templates --output cml --dir demo --site DM-Akron
+    nrx --api https://demo.netbox.dev --templates templates --output cml --dir demo --site DM-Akron
     ```
 
 2. Now you're ready to start the "DM-Akron" topology in CML.
@@ -259,17 +266,17 @@ source nrx39/bin/activate
     * Choose "GO TO LAB". In SIMULATE menu, choose START LAB
     * Use NODES menu to monitor the status of each node
 
-3. Without `--output cml` argument, `nrx.py` will save data from NetBox as a CYJS file `<site_name>.cyjs`
+3. Without `--output cml` argument, `nrx` will save data from NetBox as a CYJS file `<site_name>.cyjs`
 
     ```Shell
     export NB_API_TOKEN='replace_with_valid_API_token'
-    ./nrx.py --api https://demo.netbox.dev --dir demo --site DM-Akron
+    nrx --api https://demo.netbox.dev --dir demo --site DM-Akron
     ```
 
-4. If you have a CYJS file, run `./nrx.py --input cyjs --file <site>.cyjs --output cml` to create a topology file from the CYJS graph you exported in the previous step. For example, run:
+4. If you have a CYJS file, run `nrx --input cyjs --file <site>.cyjs --output cml` to create a topology file from the CYJS graph you exported in the previous step. For example, run:
 
     ```Shell
-    ./nrx.py --input cyjs --file demo/DM-Akron.cyjs --templates templates --output cml --dir demo
+    nrx --input cyjs --file demo/DM-Akron.cyjs --templates templates --output cml --dir demo
     ```
 
 ## Topology Visualization with Graphite
@@ -278,11 +285,11 @@ A combination of **netreplica** `nrx` and [`graphite`](https://github.com/netrep
 
 Follow a two-step process:
 
-1. Export topology data from NetBox in the Graphite format: `nrx.py -o graphite`. For example, let's export "DM-Akron" site from the [NetBox Demo](https://demo.netbox.dev) instance:
+1. Export topology data from NetBox in the Graphite format: `nrx -o graphite`. For example, let's export "DM-Akron" site from the [NetBox Demo](https://demo.netbox.dev) instance:
 
     ```Shell
     export NB_API_TOKEN='replace_with_valid_API_token'
-    ./nrx.py --api https://demo.netbox.dev --site DM-Akron --templates templates --output graphite
+    nrx --api https://demo.netbox.dev --site DM-Akron --templates templates --output graphite
     ```
 
 2. Start Graphite to visualize "DM-Akron" site:
@@ -341,7 +348,7 @@ Watch [the demo of the project on YouTube](https://youtu.be/cP8PUr306ZM):
 
 ## Copyright notice
 
-Copyright 2023 Netreplica Team
+Copyright 2023,2024 Netreplica Team
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
diff --git a/nrx b/nrx
new file mode 100755
index 0000000..fb0cf41
--- /dev/null
+++ b/nrx
@@ -0,0 +1,31 @@
+#!/usr/bin/env python3
+
+# Copyright 2024 Netreplica Team
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Export network topology from NetBox as a graph
+
+import re
+import sys
+import os
+
+# Get the directory containing the repository
+repo_directory = os.path.dirname(os.path.abspath(__file__))
+# Append to the system path for module imports
+sys.path.append(f"{repo_directory}/src")
+# Import the main function and execute
+from nrx import main
+if __name__ == '__main__':
+    sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
+    sys.exit(main())
\ No newline at end of file
diff --git a/nrx.py b/nrx.py
deleted file mode 120000
index 23d8ad0..0000000
--- a/nrx.py
+++ /dev/null
@@ -1 +0,0 @@
-nrx/nrx.py
\ No newline at end of file
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..0a6e49d
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,47 @@
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+[project]
+name = "nrx"
+dynamic = [
+  "version"
+]
+authors = [
+  { name="Alex Bortok and Netreplica Team", email="dev@netreplica.com" },
+]
+description = "nrx - netreplica exporter"
+readme = "README.md"
+requires-python = ">=3.9"
+license = {file = "LICENSE"}
+classifiers = [
+    "Programming Language :: Python :: 3",
+    "Operating System :: OS Independent",
+    "License :: OSI Approved :: Apache Software License"
+]
+dependencies = [
+    "certifi",
+    "charset-normalizer>=3.3.2",
+    "idna>=3.6",
+    "Jinja2>=3.1.3",
+    "MarkupSafe>=2.1.4",
+    "networkx>=3.2.1",
+    "pynetbox>=7.3.3",
+    "requests>=2.31.0",
+    "toml>=0.10.2",
+    "urllib3>=2.1.0",
+    "pyyaml>=6.0.1"
+]
+
+[project.urls]
+Homepage = "https://github.com/netreplica/nrx"
+Issues = "https://github.com/netreplica/nrx/issues"
+
+[project.scripts]
+nrx = "nrx:main"
+
+[tool.hatch.build.targets.wheel]
+sources = ["src"]
+only-include = ["src/nrx"]
+
+[tool.hatch.version]
+path = "src/nrx/__about__.py"
\ No newline at end of file
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 9476802..89e3240 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,2 +1,5 @@
 pylint
-rich
\ No newline at end of file
+rich
+build
+twine
+hatch
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
index 7108262..b6ae427 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,4 +8,4 @@ pynetbox==7.3.3
 requests==2.31.0
 toml==0.10.2
 urllib3==2.1.0
-pyyaml==6.0.1
\ No newline at end of file
+pyyaml==6.0.1
diff --git a/src/nrx/__about__.py b/src/nrx/__about__.py
new file mode 100644
index 0000000..03a523b
--- /dev/null
+++ b/src/nrx/__about__.py
@@ -0,0 +1,22 @@
+#!/usr/bin/env python3
+
+# nrx - network topology exporter by netreplica
+
+# Copyright 2024 Netreplica Team
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""
+Metadata for the nrx package
+"""
+__version__ = "0.5.0rc1"
diff --git a/src/nrx/__init__.py b/src/nrx/__init__.py
new file mode 100644
index 0000000..8e4b76e
--- /dev/null
+++ b/src/nrx/__init__.py
@@ -0,0 +1,27 @@
+#!/usr/bin/env python3
+
+# nrx - network topology exporter by netreplica
+
+# Copyright 2024 Netreplica Team
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""
+Main function for nrx
+"""
+
+from nrx.nrx import cli
+
+def main():
+    """Main"""
+    return cli()
diff --git a/nrx/nrx.py b/src/nrx/nrx.py
similarity index 98%
rename from nrx/nrx.py
rename to src/nrx/nrx.py
index 5224859..b9c8c62 100755
--- a/nrx/nrx.py
+++ b/src/nrx/nrx.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 
-# Copyright 2023 Netreplica Team
+# Copyright 2023,2024 Netreplica Team
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -27,9 +27,6 @@
 It can also read the topology graph previously saved as a CYJS file to convert it into the one of supported network emulation formats.
 """
 
-__version__ = 'v0.4.0'
-__author__ = 'Alex Bortok and Netreplica Team'
-
 import os
 import sys
 import argparse
@@ -47,6 +44,9 @@
 import jinja2
 import yaml
 
+# Single source version
+from nrx.__about__ import __version__
+
 # DEFINE GLOBAL VARs HERE
 
 DEBUG_ON = False
@@ -989,7 +989,9 @@ def parse_args():
 
     args_parser.add_argument('-v', '--version',     action='version', version=f'%(prog)s {__version__}')
     args_parser.add_argument('-d', '--debug',       nargs=0, action=NrxDebugAction, help='enable debug output')
-    args_parser.add_argument('-I', '--init',        nargs=0, action=NrxInitAction, help=f"initialize configuration directory in $HOME/{NRX_CONFIG_DIR} and exit")
+    args_parser.add_argument('-I', '--init',        nargs='?', help=f"initialize configuration directory in $HOME/{NRX_CONFIG_DIR} and exit. \
+                                                                      optionally, specify a VERSION to initialize with: -I 0.1.0",
+                                                        const=__version__, action=NrxInitAction, metavar='VERSION')
     args_parser.add_argument('-c', '--config',      required=False, help=f"configuration file, default: $HOME/{NRX_CONFIG_DIR}/{NRX_DEFAULT_CONFIG_NAME}",
                                                         default=nrx_default_config_path())
     args_parser.add_argument('-i', '--input',       required=False, help='input source: netbox (default) | cyjs',
@@ -1032,11 +1034,12 @@ class NrxInitAction(argparse.Action):
     """Argparse action to initialize configuration directory"""
     def __call__(self, parser, namespace, values, option_string=None):
         # Create a NRX_CONFIG_DIR directory in the user's home directory, or in the current directory if HOME is not set
+        debug(f"[INIT] version to use: {values}")
         config_dir_path = nrx_config_dir()
         print(f"[INIT] Initializing configuration directory in {config_dir_path}")
         config_dir = create_dirs(config_dir_path)
         # Get asset NRX_VERSIONS_NAME with versions compatibility matrix
-        versions = get_versions(__version__)
+        versions = get_versions(values)
         templates_path = get_templates(versions, config_dir)
         if templates_path is not None:
             print(f"[INIT] Saved templates to: {templates_path}")
@@ -1051,8 +1054,10 @@ def __call__(self, parser, namespace, values, option_string=None):
 
 
 def get_versions(nrx_version):
-    """Download and parse NRX_VERSIONS_NAME asset file for a specific nrx version"""
-    versions_url = f"{NRX_REPOSITORY}/releases/download/{nrx_version}/{NRX_VERSIONS_NAME}"
+    """
+    Download and parse NRX_VERSIONS_NAME asset file for a matching nrx release version
+    """
+    versions_url = f"{NRX_REPOSITORY}/releases/download/v{nrx_version}/{NRX_VERSIONS_NAME}"
     try:
         r = requests.get(versions_url, timeout=NRX_REPOSITORY_TIMEOUT)
     except (HTTPError, Timeout, RequestException) as e:
@@ -1247,8 +1252,8 @@ def load_config(args):
 
     return config
 
-def main():
-    """Main"""
+def cli():
+    """Main entry for CLI execution, called from main() in __init__.py"""
     # Parameters
     args = parse_args()
     config = load_config(args)
@@ -1289,7 +1294,3 @@ def main():
             error(f"Only --input netbox is supported for this type of export format: {config['output_format']}")
 
     return 0
-
-
-if __name__ == '__main__':
-    sys.exit(main())
diff --git a/versions.yaml b/versions.yaml
index 238743e..f280643 100644
--- a/versions.yaml
+++ b/versions.yaml
@@ -1,2 +1,2 @@
-nrx: v0.4.0
+nrx: v0.5.0
 templates: v0.2.0
\ No newline at end of file