Postman

Postman is a collaboration platform for API development. Postman's features simplify each step of building an API and streamline collaboration so you can create better APIs—faster.

To install Postman on AnduinOS, you can run:

wget https://dl.pstmn.io/download/latest/linux_64 -O postman-linux-x64.tar.gz
sudo tar -xzf postman-linux-x64.tar.gz -C /opt
rm postman-linux-x64.tar.gz
sudo ln -s /opt/Postman/Postman /usr/bin/postman
echo "[Desktop Entry]
Name=Postman
Comment=API Development Platform
Exec=/opt/Postman/Postman
Icon=/opt/Postman/app/resources/app/assets/icon.png
Terminal=false
Type=Application
Categories=System;Development;API;" | sudo tee /usr/share/applications/postman.desktop

Then, you can run Postman by typing postman in your terminal or searching for Postman in your application menu.

Unable to automatically upgrade this application

The above command only installs the launcher. If you run sudo apt upgrade, it won't upgrade it automatically. You will need to manually rerun the above command to upgrade.

This is because the software provider didn't setup a repository for automatic updates. You will need to check the official website for updates.