https://dbfiddle.uk also allows you to work with a SQLite database from your browser (along with a lot of other databases)
Edit: But it looks like this allows you to maybe upload your own db, which is a totally different use case.
The page title and the About section both say "SQL Online", so presumably this started as a SQLite-only project then later added support for other DBs, but they kept the same domain name. Just guessing though.