Humaaans - Mix-&-match illustrations of humans with a design library.
LibHunt - LibHunt tracks mentions of software libraries on relevant social networks. Based on that data, you can find the most popular projects and their alternatives.
Icons8 - Free app for Mac & Windows already containing 39,800 icons. Allows to search and import icons…
AlternativeTo - AlternativeTo lets you find apps and software for Windows, Mac, Linux, iPhone, iPad, Android, Android Tablets, Web Apps, Online, Windows Tablets and more by recommending alternatives to apps you already know.
Isometrica - 3D illustration constructor with 380+ isometric objects
GitSpo - Measure & engage your open-source community