Based on our record, ReadTheDocs should be more popular than I'm a Puzzle. It has been mentiond 2 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
I realize that this subreddit is mostly about physical (non-digital) puzzles. I don't know a lot about digital puzzles, but recently came across the I'm a Puzzle website, which offers the ability to play digital puzzles for free. Source: about 2 years ago
A possible solution: https://readthedocs.com/. - Source: Hacker News / over 2 years ago
Read the Docs is the standard de-facto for serving technical documentation, especially popular among Open Source projects. It supports Sphinx and MkDocs out of the box, supports multiple versions of the documentation and localized versions. The project readthedocs.com provides commercial support and serves both public and private documentation. - Source: dev.to / about 3 years ago
Jigsaw Explorer - Premium online jigsaw puzzles.
GitBook - Modern Publishing, Simply taking your books from ideas to finished, polished books.
Jigsaw Planet - Free Online Jigsaw Puzzles
Documize - Enterprise-grade wiki and knowledge management platform
Jigidi - Free online jigsaw puzzles. Hundreds of new jigsaw puzzles every day created by users from all around the world.
MkDocs - Project documentation with Markdown.