python-colormath is a Python module which abstracts common color math operations. (For example, converting from CIE L*a*b to XYZ, or from RGB to CMYK.) Other operations, such as calculating ANSI and ISO density from spectral data or taking the delta E of two colors, are also covered.
New Internet is an all-purpose resilient serverless network system that overcomes the distinction between "server" and "client" and extends the idea of peer-to-peer networking to any kind of application or service. It implements a growing set of protocols and could be used for direct file transfer or as a serverless mail network.
pitch perfect is a tool for generating and playing audio tones. The mouse controls pitch and volume, while the keyboard allows persistent notes to be added for chord structure. A separate mode toggles between full note interpolation (off-key) and chromatic notes. It currently supports three common waveforms, in addition to allowing short .wav samples to be played.