Codidact vs Question2Answer
A side-by-side comparison of two self-hosted forums & community options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | Codidact | Question2Answer |
|---|---|---|
| Deploy effort | Under-an-hour setup | Under-an-hour setup |
| Health score | 79 · Good | 16 · At risk |
| Category | Forums & Community | Forums & Community |
| License | AGPL-3.0 | GPL-3.0 |
| Language | Ruby | PHP |
| Setup difficulty | Medium | Easy |
| Min. RAM | 1,024 MB | 256 MB |
| Deployment | docker, bare-metal, source | docker, bare-metal, source |
| GitHub stars | ★ 441 | ★ 1,669 |
| First released | 2020 | 2010 |
| Replaces | Stack Overflow, Stack Exchange | Stack Overflow, Quora |
What are Codidact and Question2Answer?
Codidact
Codidact is an open-source question-and-answer platform built as a community-run alternative to Stack Exchange. It supports multiple categories, voting, and knowledge curation.
- Stack Exchange-style Q&A
- Reputation and voting system
- Multiple community categories
- Markdown-based posts
Question2Answer
Question2Answer is a popular, free PHP platform for running a question-and-answer community website. It is fast, easy to install, and supports plugins, themes, and multiple languages.
- Lightweight Q&A engine
- Voting and reputation system
- Plugin and theme support
- Multilingual interface
Codidact vs Question2Answer: key differences
Codidact is written in Ruby, while Question2Answer is built with PHP. Licensing differs — AGPL-3.0 for Codidact versus GPL-3.0 for Question2Answer. Question2Answer is the lighter option, starting around 256 MB of RAM against 1,024 MB for Codidact. Question2Answer is the more established project (first released 2010), while Codidact arrived in 2020. Question2Answer has the considerably larger community, at 1,669 GitHub stars versus 441.
Why pick each one
Choose Codidact if…
- Released under the AGPL-3.0 license
- First-class Docker support for quick deployment
- Written in Ruby
Watch out for
- Smaller ecosystem
- Q&A focused
Choose Question2Answer if…
- Easy to install and host
- Fast and simple
Watch out for
- Dated default theme
- Q&A only
Frequently asked questions
Is Codidact or Question2Answer better?
Question2Answer is the stronger all-round pick: it has both the larger community and the simpler easy setup. Consider Codidact if its specific feature set fits your needs better.
Are Codidact and Question2Answer free and open-source?
Yes. Codidact is licensed under AGPL-3.0 and Question2Answer under GPL-3.0. Both can be self-hosted at no software cost.
Can I run Codidact and Question2Answer with Docker?
Codidact: yes. Question2Answer: yes.
Which is lighter on resources, Codidact or Question2Answer?
Question2Answer has the smaller minimum footprint at 256 MB of RAM, compared to about 1,024 MB for Codidact. Real-world usage depends on library size, user count, and enabled features.