Is the project still supported?

[MatinDevsHere]

As the latest version supported by Omnisharp-Vim is .NET 6, which is 2 major releases behind the newest release, is the project still usable and supported?

[nickspoons]

OmniSharp-vim uses the OmniSharp-roslyn language server, which is the same C# language server used by most other editors. The server itself is built using .NET 6 but supports more recent versions of dotnet code.

If you're concerned about the future of the server, you can ask in the OmniSharp-roslyn repo.