Artboard Studio - Online graphic design app mainly focused on product mockups.

Indie Hackers - Connect with fellow entrepreneurs, developers, and bootstrappers who are sharing the strategies and revenue numbers behind their companies.

GraphJS - Make any website social

Geneva - An all-in-one communication app for groups & communities

Canva - Canva is a graphic-design platform with a drag-and-drop interface to create print or visual content while providing templates, images, and fonts. Canva makes graphic design more straightforward and accessible regardless of skill level.

Figma Community - Publish live design files for others to learn from & remix.