An open-source Slack clone built in 14 days with Claude Code.
Slack charges $8/user/month. A 50-person org pays $5,000/year.
This is the experiment: can any startup self-build and host an alternative for $100/year total?

Stack: Node.js · PostgreSQL · Prisma · Socket.io · React · Vite · Tailwind
Features: Channels · Threads · Voice calls · File uploads · Search · Admin panel · Mobile responsive
Vision: minimalist · familiar · fast · safe · open-source