There are a few MUSTs if using GPL, yes (btw, GPL is considered a "free" license, not a "open source" one), but providing a repository is not one of them. Altho

There are a few MUSTs if using GPL, yes (btw, GPL is considered a "free" license, not a "open source" one), but providing a repository is not one of them. Although you do need to provide the source (in any means you want, as long as it's accessible, making a repository is one of the ways, bundling a zip file would be another). Short version of your obligations if using GPL as a license: https://tldrlegal.com/license/gnu-general-public-license-v3-(gpl-3) https://tldrlegal.com/license/gnu-general-public-license-v3-...