Intro: Puck is a high-speed, high-accuracy parser for natural languages. It's (currently) designed for use with grammars trained with the Berkeley Parser and on NVIDIA cards. On recent-ish NVIDIA cards (e.g. a GTX 680), around 400 sentences a second with a full Berkeley grammar for length <= 40 sentences.
Puck is only useful if you plan on parsing a lot of sentences. On the order of a few thousand. Also, it's designed for throughput, not latency.