Redis comes to my mind which is actively developed and can be considered one of the new projects that is powering lot of new stuffs ... Also SQlite, Postgres which are very actively developed and again being used in much of the newer stuffs either directly or indirectly ...

But in a way, you may be right ... all the critical new lower level programs like web servers are now mostly written in Go, Rust and C is not favourably considered for them ...