Excalidraw
Virtual whiteboard for hand-drawn diagrams
Free124.9K
Swatches
iOS app that lets you collect, inspect and share the colors that inspire you in your daily life.   
Alternatives to Swatches
MarkText
Next generation markdown editor, running on platforms of MacOS Windows and Linux. [![Open-Source Software][OSS Icon]](https://github.com/marktext/marktext) ![Freeware][Freeware Icon]
Open Source57.1K
Penpot
Open-source design and prototyping platform
Open Source49.4K
tldraw
Infinite canvas drawing tool
Free47.6K