Opensource and free.
I played around with Redis and was looking for a nice simple GUI I started this as a weekend project on Sept, 13 2019.. and posted it on the r/python "what's everyone working on this week" . I made a short "development diary" about the progress .. here.
It began and is a simple UI for Redis intended to be runniong locally. Tornado Webserver is included so simply start it and connect to localhost:8080.