Undesign - Free design tools and resources for your projects
avocode - Centralize design collaboration, version control, prototyping, feedback, and developer hand-off with Avocode. Work on any design, anywhere, with anyone. Sign up free 👉 https://avocode.com/.
Super designer - Super designer is a collections of simple design tools to create unique designs in a a few clicks.
Lean Service Creation - Open source design process and toolkit
DesignValley - Discover, vote and share your favorite design tools 🥇
The Ultimate Design Tool Picker - Find the best design tool for your use case