if your GUI tool doesn't have a link to the source or git repo in the header of your website, i bounce.
if that git repo doesn't have an f/oss license in the /LICENSE, i bounce.
like 99% of the gui clients for postgres (free software) are proprietary crap. imagine using free software tools, building tools atop them, and being so selfish as to try to panhandle for $5. it's the tackiest bullshit.