Genuinely one of the more honest entries here: Discourse itself is free and open-source. What you'd be paying for on their hosted plan is managed infrastructure, not the forum software — you can run the real thing yourself.
VIBE SCORE 95/100
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 |
Two real costs, not just "free": the AI agent's own usage, and hosting once it's running. Both are estimated from this app's own effort rating and component list — see the assumptions on the method page.
| AI agent — with a subscription (Claude Pro/Max, Cursor, etc.) | $0 marginal |
| AI agent — pay-per-use API, no subscription | $43–$86 one-time |
| Hosting, once it's running | $0/mo (free tier) |
| Domain name, if you want your own | ~$12/yr |
Discourse costs $25/mo. Even paying per-token with no subscription, and accounting for hosting, this build pays for itself in about 4 months.
Don't feel like building it? These are already made, open-source, and free.
Build it. Genuinely one of the more honest entries here: Discourse itself is free and open-source. What you'd be paying for on their hosted plan is managed infrastructure, not the forum software — you can run the real thing yourself.
Discourse costs $25/mo (about $300/yr) as of 2026-08. That's what a working rebuild would save you.
Self-hosting Discourse means you're responsible for updates, backups, and moderation tooling yourself Building a forum from scratch instead of using Discourse means re-implementing spam prevention and trust-level systems Discourse has spent years refining At real community scale, moderation queues and reputation systems are genuine ongoing product work either way
Yes — Discourse (self-hosted) are open-source options worth trying before you build your own. Details are in the standard parts section on this page.
Closest matches on the register — ranked by the build parts they share with Discourse, not just by category.
Browse all devtools tools · every comparison · how scoring works · the full register
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