Sketch Toolbox - A super simple plugin manager for Sketch
Anima App - Design, get feedback, convert to code, publish, iterate.
Sketch Manager - Manage Sketch symbols, text and layer styles easily
Sketch Repo - Collection of resources for anyone who uses Sketch
SKPM - 💎📦 A utility to build and publish Sketch plugins. Contribute to skpm/skpm development by creating an account on GitHub.
Figma - Team-based interface design, Figma lets you collaborate on designs in real time.