Reaper is a powerful and realy affordable windows application for multitrack recording and editing of audio.
-> portable - supports running from usb keys or other removable media
-> 64 bit audio engine
-> excellent low-latency performance
-> multiprocessor capable
-> 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
-> tightly coded - installer is just over 2mb
the software can be tested as uncrippled unexpiring shareware. purchasing a non-commercial license costs $39.95 usd, a commercial-use license costs $199.95 usd.