If you're launching a Q&A community, you'll narrow it down to one of three options: QAFlow, Question2Answer, or Discourse. All three are self-hosted, all three are good — but they're built for very different needs.
Quick Comparison
| Feature | QAFlow | Question2Answer | Discourse |
|---|---|---|---|
| Price | $49 one-time | Free (GPL) | Free (open-source) or $100+/mo hosted |
| Stack | PHP / MySQL — no Composer | PHP / MySQL — no Composer | Ruby on Rails — needs VPS |
| Built-in AI | ✅ Groq, OpenAI, Gemini, Claude | ❌ Plugin needed | ❌ Plugin needed |
| Modules | 15+ (Q&A, Blog, Forum, Jobs, News…) | Q&A only | Forum + plugins |
| Payment gateways | 31 included | None native | None native |
| Best for | All-in-one community + monetization | Pure Q&A on tight budget | Long-form discussions |
Pick QAFlow if…
- You want a single platform that handles Q&A, blog, jobs, and content modules
- You plan to monetize with Pro Memberships
- You want AI-generated content out of the box
- You're on shared hosting and don't want to manage a VPS
Pick Question2Answer if…
- You only need Q&A — nothing else
- You want zero upfront cost and don't mind extending it yourself
Pick Discourse if…
- Your community is discussion-heavy (long threads, not Q&A)
- You have a sysadmin or budget for managed Discourse hosting
Bottom line: for most people building a niche knowledge community in 2026, QAFlow's combination of all-in-one modules + monetization + AI is the fastest path to revenue.