Is Aragon open source?
Yes, Aragon is a non-profit organization with open source code (see example APGL license for the Aragon Client repository here. All main repositories are stored here. Feel free to fork the project and submit your contribution to improve the project together. See the Contributing section in the Aragon Client README for more information on contributions.
If you feel uncertain on where to start, please reach out to us at the #questions channel on Discord.