Hello!
I run a website dedicated to gathering the best open-source companies.
Recently, I analyzed the technologies each company uses. It was a challenging task, but I was able to identify nearly 250 different languages, frameworks, and development tools.
You can check out the list here: https://openalternative.co/stacks
Enjoy!
PS. removed the old post because forgot to add the link.
UPDATE: I've added advanced search filters directly on the listing, so you can now filter self-hosted tools by their alternative, category, tech stack used and licence they're released on π₯