Man, I loved Brackets (Phoenix is a fork) when it came out. Much nicer than Atom, but then VSCode got much better and took over most of the mindshare.
Gotta be web-based and only other major one I know of is Atom, which was originally started by GitHub and is also owned by Microsoft now. Don't know if people are still using it much though.
There was also Adobe Brackets, but it was discontinued earlier this month.