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/.
Undesign - Free design tools and resources for your projects
Super designer - Super designer is a collections of simple design tools to create unique designs in a a few clicks.
DesignValley - Discover, vote and share your favorite design tools 🥇
Lean Service Creation - Open source design process and toolkit
Framer - 🔥 Design real websites right on the canvas.