Extempore is described as 'Programming language and runtime environment designed to support the programming of real-time systems in real-time' and is a music production app in the audio & music category. There are more than 10 alternatives to Extempore for a variety of platforms, including Web-based, Self-Hosted, Windows, Mac and Linux apps. The best Extempore alternative is strudel, which is both free and Open Source. Other great apps like Extempore are SuperCollider, Sonic Pi, AudioMasher and Web Audio Studio.
Nyquist is a language and IDE for sound synthesis and music composition. It is implemented in C and C++ and runs on Win32, OSX, and Linux. Nyquist combines a powerful functional programming style with efficient signal-processing primitives.
Wavepot is a live-coding environment for creating sound and music. Build sound and music compositions on-the-fly using JavaScript and save your projects right to GitHub.
Evaluator is an audio creation app that lets you write short C-style programs whose output is used to generate sound! It's available as a standalone app or as a VST plugin for your DAW.
