Redis, which stands for Remote Dictionary Server, is an open-source in-memory data structure store that can be used as a database, cache, and message broker. Originally created by Salvatore Sanfilippo in 2009, Redis was later sponsored by a company called Redis Labs (now known as Redis). Redis owns the trademark for the Redis name, and they actively maintain and provide commercial support for the project.
The Redis project itself is open-source software distributed under the BSD 3-Clause license, meaning that its source code is available for anyone to use, modify, and distribute, subject to certain conditions. Its development and maintenance are carried out by a community of developers and contributors, with Redis as the primary sponsor and maintainer.
In summary, Redis, formerly known as Redis Labs, owns the trademark for the Redis name and provides support for the project, but the software itself is open source and maintained by a community of developers.