Rewolf Software, also known as Rewolf Entertainment, was a game development studios established in Utah by Herbert Flower (also known as Herb Flower) in 1996. The development team that Flower put together came from the mod scene and was put together for the duration of one project.
Rewolf Software Logo used in the video game Gunman Chronicles
During its existence, Rewolf Software worked on one title, the Half-Life mod Gunman Chronicles (also known as Half-Life Gunman) which shipped in late 2000.
After Gunman Chronicles was shipped, Rewolf Entertainment dissolved and its team members moved on to new ventures. A couple of months later, in 2001, Herbert Flower co-founded Mythyn Interactive together with Paul Witte, while the core team on Gunman consisting of Stefan Baier, Renier Banninga, and Adrian Banninga, moved to the Netherlands, where they co-founded Streamline Studios together with Alexander L. Fernandez.
Source: Wikipedia, "Rewolf Software," available under the CC-BY-SA License.