Tool-less mouse interface - spend less time clicking.Tightly coded – installer is just over 2MB.ReaPlugs: high quality 64 bit effect suite.Supports a wide range of hardware (nearly any audio interface, outboard hardware, many control surfaces).Direct multi-track recording to many formats including WAV/BWF/W64, AIFF, WavPack, FLAC, OGG, and MIDI.Portable – supports running from USB keys or other removable media.REAPER also supports volume, pan controls and envelopes per track, multi-layer undo/redo, and user creatable color themes. You can arrange any number of items in any number of tracks and use audio processing plug-ins (DirectX and Jesusonic). It reads WAV, OGG, and MP3 files, and records WAV files.

REAPER supports ASIO, Kernel Streaming, WaveOut, and DirectSound for playback and recording.

It provides an extensive set of features, but is a very small and lightweight application (the installer is less than 1 megabyte, and includes many effects and a sample project). REAPER is a powerful but sensible Windows application that lets you record, arrange, edit, and render multi-track waveform audio.