Orbit.love - Grow and measure your community across any platform with Orbit, the community experience platform. Try Orbit for free!
Artboard Studio - Online graphic design app mainly focused on product mockups.
Spectrum - Browser-based app to visualize the frequencies of an audio file.
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.
GraphJS - Make any website social
ProtoSketch - Powerful yet simple vector graphics editor and prototyping