After many years of work, we are releasing gekko into the public. It is behind Dolphin in terms of what is possible and functional though.

This release is due to a variety of reasons. Most of it is due to myself being the sole developer at the moment. I´ve been moving along on it however the pace is slowing down due to various issues in increasing speed and other events in my life"

"There are a few enhancements since the v0.3 release, mostly in the DynaRec but I can´t recall what all of the updates are."

http://www.gekko-emu.net/

"The code that is being made public was a large work between Lightning and Shizzy with a few others like Chrono chipping in.

Shizzy did most of the work on the graphic code and quite a bit of the original underlying code for low level and the interpreter cpu.

Lightning´s main focus was the dynarec. He also rewrote the HLE code while also reimplementing and reworking other parts of the code for speed.