Channels, threads, and real-time messages are a genuinely well-trodden build — websockets and a message table get you most of the way. What you can't rebuild in a weekend is the ten thousand hours other companies spent making their tools plug into it.
VIBE SCORE 88/100
The parts this build actually needs, each rated on its own — the average is the Vibe Score above.
| Landing page | 99 |
| CRUD database | 95 |
| User login | 92 |
| Realtime collaboration | 67 |
Don't feel like building it? These are already made, open-source, and free.
Borderline. Channels, threads, and real-time messages are a genuinely well-trodden build — websockets and a message table get you most of the way. What you can't rebuild in a weekend is the ten thousand hours other companies spent making their tools plug into it.
Slack costs $8.75/mo (about $105/yr) as of 2026-08. That's what a working rebuild would save you.
The app directory — every integration your team relies on (calendars, CI pipelines, ticketing) — doesn't come with you Enterprise-grade reliability at scale (message ordering, delivery guarantees across flaky connections) is a different tier of engineering than a personal build Huddles and screen-share need real-time video infrastructure, not just messaging — a much bigger add-on
Yes — Rocket.Chat, Zulip are open-source options worth trying before you build your own. Details are in the standard parts section on this sheet.