REAPER is a powerful Windows application for multitrack recording and editing of audio.

Features:

* Portable - supports running from USB keys or other removable media
* 64 bit audio engine
* Excellent low-latency performance
* Stunning multiprocessor performance
* Direct multi-track recording to many formats including WAV/BWF/W64, AIFF, WavPack, FLAC, OGG, and MIDI.
* Extremely flexible routing
* Fast, tool-less editing
* Supports a wide range of hardware (nearly any audio interface, outboard hardware, many control surfaces)
* Support for VST, VSTi, DX, DXi effects
* ReaPlugs: high quality 64 bit effect suite