Dev tools · alternatives · 2026

24 alternatives to Open Source

from Microsoft

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Open Source launched in 2020; newer entries below may have overtaken it.

1. 1
   Open Source Alternatives▲804

   200+ open source alternatives to popular B2B tools

   2021 · btw.so · its alternatives →

2. 2
   Free XP▲188

   Gain experience with open-source projects

   2023 · its alternatives →

3. 3
   Google Open Source▲560

   All of Googles open source projects under a single umbrella

   2017 · opensource.google · its alternatives →

4. 4
   Open Source Stash▲264

   The best open-source alternatives for you next maker project

   2020 · opensourcestash.com · its alternatives →

5. 5
   Open Source Alternative To▲377

   Discover open source alternatives to your proprietary SaaS

   2022 · opensourcealternative.to · its alternatives →

6. 6
   Open Source Tools Stack!▲73

   Top 50+ open source tools to build your brand

   2022 · cherryyadvendu.gumroad.com · its alternatives →

7. 7
   Apple Open Source▲12

   Open Source at Apple.

   2021 · opensource.apple.com · its alternatives →

8. 8
   Console▲224

   A free weekly roundup of the latest in open-source software

   2021 · console.substack.com · its alternatives →

9. 9
   companies.tools▲263

   See which apps are used by your favourite product's teams

   2022 · efficient.app · its alternatives →

10. 10
    Microsoft To Do 2.0▲245

    All new design to officially replace Wunderlist

    2019 · apps.apple.com · its alternatives →

11. 11
    SourceSort▲114

    Find the perfect open source projects to contribute to

    2019 · sourcesort.com · its alternatives →

12. 12
    Thanks▲225

    Thank the open source maintainers you depend on! 🙌✨

    2018 · github.com · its alternatives →

13. 13
    Ao▲86

    Open source, community-driven, robust Microsoft To-Do app

    2019 · klaussinani.github.io · its alternatives →

14. 14
    Launching Sustainable License, an Alternative to Open Source▲6

    Open source is built on the principles of transparency, participation and collaboration. And open source software is thriving. It

    2022 · manishrjain.com · its alternatives →

15. 15
    Open Source @ Microsoft▲10

    Microsoft's Open Source projects on Github

    2016 · microsoft.github.io · its alternatives →

16. 16
    Open Sustainable Technology▲95

    A curated list of open and sustainable technology projects

    2021 · opensustain.tech · its alternatives →

17. 17
    Open Stacks▲136

    Browse transparent Tech Stacks and add your own

    2019 · openstacks.co · its alternatives →

18. 18
    Open Apps▲13

    Open source app directory

    2024 · openapps.pro · its alternatives →

19. 19
    Open-source Workspace (mail,docs,spreadsheet,drive) web/iOS▲111

    Free, open-source cloud productivity suite. Mail, Calendar, Contacts, and Drive - faster and leaner than Google Apps. Self-host or use our cloud.

    May 2026 · tinycld.org · its alternatives →

20. 20
    Open Source Vehicle▲81

    A production ready, roadworthy, open source car

    2014 · osvehicle.com · its alternatives →

21. 21
    Fosshub▲79

    An open source for free and open source tools

    2015 · fosshub.com · its alternatives →

22. 22
    Rootspace▲88

    Open source productivity SaaS app

    2023 · github.com · its alternatives →

23. 23
    Find Free and Open Source Software – Awsmfoss▲27

    Explore the universe of awesome Free and Open Source software.

    2024 · awsmfoss.com · its alternatives →

24. 24
    OSv▲63

    Free Open Source OS for Cloud-Based Startups

    2014 · osv.io · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →