Gemini is the private Java framework Techempower uses on their client projects. I believe questions regarding its performance relative to various open source and enterprise JVM frameworks inspired the first Techempower benchmarks.

http://www.techempower.com/blog/2013/03/28/frameworks-round-...

Gemini is our internal Java web framework; it has no relation to the Eclipse project (other than I use Eclipse when I work on Gemini) ^_^

Second on this question. Extra points if you've done any development with Gemini. I'm really curious: in every category it was the highest-scoring full-stack framework, which is especially surprising given its apparent obscurity.

Edit: every category but the plaintext benchmark.