Open Source Stack Overflow AlternativesTop Q&A Services and other similar apps like Stack Overflow

The best open source alternative to Stack Overflow is Codidact. If that doesn't suit you, our users have ranked more than 25 alternatives to Stack Overflow and 17 is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Stack Overflow are TopAnswers, Scoold, Question2Answer and Apache Answer.

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Alternatives list

  1. Codidact icon
     26 likes

    Ever had a question? Ever had an answer? Ever had knowledge to share? We believe that coming together to inquire and learn, to share knowledge and to teach each other, makes the world a better place. We also believe that Q&A communities should be free from the politics and...

    Cost / License

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    • Online
    • Self-Hosted
     
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    Comments about Codidact as an Alternative to Stack Overflow
    dataculi
    Positive
    0

    Other than Quora, it's like the only one on this list that actually plays the same role Stack Overflow plays. It's a reputation-based question and answer site (or collection of sites/communities) organized around a central topic

    cellio
    Positive
    0

    Codidact implements features that are impossible on Stack Overflow, based on what the community needs. The community is central on Codidact and the platform is open-source, so you can use Codidact's network or set up your own if you want to run things differently.

    Stack Overflow Icon
    Codidact icon
    • Almost everyone thinks Codidact is a great Stack Overflow alternative.

    • Codidact is the most popular Self-Hosted alternative to Stack Overflow.

    • Codidact is the most popular Open Source alternative to Stack Overflow.

    • Codidact is Free and Open SourceStack Overflow is Free Personal and Proprietary
  2. TopAnswers icon
     6 likes

    TopAnswers is what Stack Overflow should be: focused on communities and knowledge sharing, not profit. We share some of the same aims:

    Cost / License

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    • Online
     
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    1
    Comments about TopAnswers as an Alternative to Stack Overflow
    dataculi
    Positive
    0

    Similar to Codidact in that they directly aim to be an alternative to Stack Exchange. Unlike Codidact, it's mostly restricted to tech topics. Good alternative

    Stack Overflow Icon
    TopAnswers icon
    • TopAnswers is Free and Open SourceStack Overflow is Free Personal and Proprietary
  3. Scoold icon
     16 likes

    Scoold is inspired by StackOverflow and implements most of its features. You can ask and answer questions, upvote and downvote posts, earn badges and reputation. Each edit creates an new revision, making it easy to follow the history of edits. Scoold is optimized for the cloud.

    Cost / License

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    • Online
    • Self-Hosted
     
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    9
    Comments about Scoold as an Alternative to Stack Overflow
    Guest
    Negative
    -1

    you have to download it...

    Review by a new / low-activity user.
    Stack Overflow Icon
    Scoold icon
    • Most users think Scoold is a great Stack Overflow alternative.

    • Scoold is Freemium and Open SourceStack Overflow is Free Personal and Proprietary
    • Scoold is LightweightStack Overflow is not according to our users
  4. Question2Answer icon
     29 likes

    A Q&A site helps an online community to share knowledge. No matter what your area of interest, people with questions can get super answers fast. Question2Answer is a popular Q&A solution.

    Cost / License

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • MySQL Community Edition
    • Self-Hosted
    • PHP
     
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    1
    11
    Comments about Question2Answer as an Alternative to Stack Overflow
    Guest
    Positive
    -1

    thats the best alternative... and you can freely install this system on your web

    Review by a new / low-activity user.
    Stack Overflow Icon
    Question2Answer icon
    • Most users think Question2Answer is a great Stack Overflow alternative.

    • Question2Answer is the most popular Windows, Mac & Linux alternative to Stack Overflow.

    • Question2Answer is Free and Open SourceStack Overflow is Free Personal and Proprietary
    • Question2Answer is LightweightStack Overflow is not according to our users
  5. Apache Answer icon
     2 likes

    Q&A platform software for teams at any scale. Whether it's a community forum, help center, or knowledge management platform, you can always count on Apache Answer.

    Cost / License

    Application type

    Platforms

    • Online
    • Self-Hosted
    • Docker
    • Cloudron
     
  6. AnonymousOverflow allows you to view StackOverflow threads without the cluttered interface and exposing your IP address, browsing habits and other browser fingerprint data to StackOverflow.

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    • Self-Hosted
    • Online
     
  7.  3 likes

    Askalot is a next generation CQA (Community Question and Answer) system.

    Cost / License

    • Free
    • Open Source

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    Platforms

    • Self-Hosted
     
  8. Talkyard icon
     3 likes

    Help each other — with the main features from StackOverflow, Discourse, Slack, Reddit, and Disqus.

    Cost / License

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    Platforms

    • Self-Hosted
    • Software as a Service (SaaS)
     
    • Talkyard is the most popular SaaS alternative to Stack Overflow.

    • Talkyard is Free and Open SourceStack Overflow is Free Personal and Proprietary
  9. Peeranha icon
     Like

    Decentralized questions and answers website that rewards users with crypto tokens for their contributions.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Online
     
  10. OSQA icon
     13 likes

    OSQA is the free, open source Q&A system you've been waiting for. Your OSQA site is more than just an FAQ page, it is a full-featured Q&A community. Users earn points and badges for useful participation, and everyone in the community wins.

    Cost / License

    • Free
    • Open Source

    Application type

    Alerts

    • Discontinued

    Platforms

    • Online
    • Self-Hosted
    • Python
    • Django
     
  11. AskBot icon
     13 likes

    Askbot is a Q&A system, like StackOverflow, Yahoo Answers and some others. Askbot is based on code of CNPROG, originally created by Mike Chen and Sailing Cai and some code written for OSQA.

    Cost / License

    • Freemium (Pay once)
    • Open Source

    Application type

    Alerts

    • Discontinued

    Platforms

    • Online
    • Self-Hosted
    • Python
    • Django
     
  12. Biostars icon
     Like

    This site's focus is bioinformatics, computational genomics and biological data analysis. We welcome posts that are detailed and specific, written clearly and simply.

    Cost / License

    • Free
    • Open Source (MIT)

    Application type

    Platforms

    • Online
     
12 of 17 Stack Overflow alternatives