The Beryl fork is one of the few fork stories with a happy ending: the combatants realized they were being ridiculous, made up, and merged back together. If only all open source disputes ended this way.

In 2006, Linux desktop compositing was the hottest thing in the open source world. Compiz, written by David Reveman at Novell, brought wobbly windows, rotating desktop cubes, and transparency effects to Linux — making it, for a brief shining moment, look cooler than both Windows Vista and Mac OS X. The community went wild. Developers started contributing plugins and enhancements at a frantic pace.

The problem was that Reveman and the Novell team weren't particularly interested in merging community contributions. Quinn Storm, a community developer who had been maintaining a popular branch of Compiz with community patches (the 'quinnstorm branch'), grew frustrated. Patches weren't being accepted upstream, communication between Novell's internal team and the community mailing list was poor, and the development process was opaque. On September 19, 2006, Storm and the community developers forked Compiz as Beryl.

Beryl quickly became the more feature-rich and community-friendly option. It had its own window decorator (Emerald), dropped GNOME dependencies in favor of a flat-file configuration backend, and iterated rapidly on visual effects. Both projects continued in parallel for about six months, which is approximately how long it takes for everyone to realize that maintaining two competing implementations of wobbly windows is a waste of human potential.

On March 30, 2007, cooler heads prevailed. The Beryl and Compiz communities agreed to merge into Compiz Fusion: Compiz would handle the core compositing engine and base plugins, while the community (formerly Beryl) would maintain the extended plugins, decorators, and configuration tools. Compiz Fusion 0.6.0 shipped in October 2007 as the reunified project.

The reconciliation was a rare moment of maturity in open source politics. Unfortunately, the entire compositing window manager category was eventually rendered moot when GNOME moved to Mutter and KDE built its own compositor, but for one brief year, the Beryl/Compiz drama was the most entertaining thing on the Linux desktop.

The Beryl/Compiz story is significant not for the fork itself but for the re-merge. It remains one of the very few examples of an open source fork being successfully reunified, and it demonstrated that forks don't have to be permanent. The key was that neither side had irreconcilable differences — the dispute was about process, not vision.

The broader impact was on the Linux desktop experience. Compiz (and Beryl) made Linux visually competitive with proprietary operating systems at a time when that mattered enormously for adoption. The wobbly windows and desktop cube became iconic demonstrations at Linux install fests worldwide. Even though the technology was eventually superseded, it played an important role in proving that the Linux desktop could be polished and visually appealing.