Fix8 is a modern open source C++ FIX framework featuring complete schema driven customisation, high performance, and fast application development. The system is comprised of a compiler for generating C++ message and field encoders, decoders, and instantiation tables, a runtime library to support the generated code and framework, and a set of complete client/server test applications. For the same message, Fix8 encodes 2.8 times faster and decodes 1.6 times faster than Quickfix, an average of 2 times. In other words, it reduces encode latency by 64% and reduces decode latency by 36%.