Design
rallly
Rallly is an open-source scheduling and collaboration tool designed to make organizing events and meetings easier.
★ 5.3k starsAGPL-3.0
View guide →Project flat is the Web, Windows and macOS client of Agora Flat open source classroom.
flat is an open-source design project by netless-io (netless-io/flat on GitHub). It has 6,439 GitHub stars and 877 forks, is released under the MIT license, and was last updated on GitHub on 3 October 2026.
Whiteboard, diagrams-as-code, or component library — match the artifact.
Community templates and themes skip the blank page.
Real-time editing and version history included.
SVG/PNG/code output drops into products and docs.
The whole team joins free.
Community starters for every common artifact.
SVG, PNG, PDF, and framework code.
Run the whole studio on your own server.
Brainstorm without page boundaries.
Production-ready UI kits with theming.
Download the source and move into the project folder.
git clone https://github.com/netless-io/flat.git
cd flatEvery project documents its own setup; start with install requirements.
cat README.md | head -60Follow the project's launch command — Docker, pip, npm, or a binary release.
# see README for the exact launch commandIt is an open-source project at netless-io/flat with 877 forks. Check the repo's contributors and recent commits to see how active maintenance is.
MIT licensed — use it commercially, no strings attached.
Yes — CRDT-based editing is the standard approach now.
For whiteboarding and diagrams, yes. Deep product design still favors Figma's ecosystem.
Export to code and specs that developers can actually use.
Rallly is an open-source scheduling and collaboration tool designed to make organizing events and meetings easier.
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Free and open — grab the source, star the repo, and start creating.