Lemmy Go by Raicuparta

Type "lg" followed by a space (some browsers also accept tab instead), and then type the name of the community you're looking for.

Example: "lg linux"

Lemmy Go will search its database for any community that has the text "linux" in its name (e.g. "linux_gaming") or title ("Linux Gaming").

If you just type a community name and press enter, Lemmy Go will take you to the most popular community from that list.

If you don't press enter right away, you will be shown a list of communities that match that query. You can then select the specific one you want.

Lemmy Go source code on GitHub