Maximilian is an open source, MIT licensed C++ audio synthesis library compatible with both RtAudio and Portaudio. It's designed to be cross platform and simple to use. The syntax and program structure are based on the popular ‘Processing’ environment. Maximilian provides standard waveforms, envelopes, sample playback, resonant filters, and delay lines. In addition, equal power stereo, quadraphonic and 8-channel ambisonic support is included. The library can be used on its own, or in combination with other tools such as openFrameworks, or the Steinberg VST SDK.