Figma Super Tidy - Figma plugin to easily align, rename and reorder your frames
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.
Easometric Figma Plugin - With Easometric it's really easy to create isometric layers.
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.
Design Lint - A design linting plugin for Figma.
JSter - JSter is a community-driven catalog of the most useful javascript libraries.