About REAPER
Read more about REAPER's audio, MIDI, and technical details.
Feature Highlights

Fast, Powerful Editing
  • Drag and drop to import, arrange, and render
  • Freely mix audio, MIDI, video, still image media on any track
  • Easily move, split, glue, resize, trim, loop, time stretch, pitch shift, fade, crossfade, slip, snap to grid, without switching tools
  • Intuitive zoom, scroll, scrub, jog, tab to audio transient, MIDI navigation
  • Simple and powerful nested folder system allows group editing, routing, bussing, all in one step
  • Full automation recording, playback, and editing support for track controls and plug-ins
  • Easily manage tempo, time signature, and varispeed changes
  • Separate audio or MIDI into freely arrangeable takes and lanes for easy comping
  • Easily copy or move regions, to quickly try out alternate arrangements

Plug-in Support
  • Insert almost any third-party audio or MIDI plug-in: VST, VSTi, DX, DXi, AU (OSX only), JS
  • Native bridging and firewalling: run Win32 plug-ins in REAPER x64, maximize RAM utilization, protect against plug-in crashes
  • ReWire (audio and MIDI) any capable application for even more flexibility
  • Fully automatic plug-in delay compensation (PDC)
  • Sidechain any plug-in, even if the plug-in does not natively support sidechaining
  • Apply FX in real time, or non-destructively render FX output
  • Real-time network FX processing: use other local machines as an FX farm

64-bit ReaPlugs Suite
  • Unlimited multiband EQ with draggable nodes
  • Graphical FFT EQ/dynamics processing
  • Technical and multiband compression
  • Flexible, open-format convolution reverb
  • Real-time pitch correction, with Elastique 2 Pro built in
  • Multitap delay, basic synthesizer, sample player, vocoder, algorithmic reverb, and more
  • Special-use plug-ins to virtualize outboard hardware, stream audio, connect to NINJAM servers, and more
  • Includes the JS audio and midi plug-in scripting engine, and hundreds of user-programmable effects

Intangibles
  • REAPER starts and loads fast - be ready to record in just a few seconds
  • Portable - put REAPER in your pocket and run it from a USB key or other removable media
  • Tightly coded - installer is only a few MB, updates can be installed in less than a minute
  • Rapid, efficient development - new features and optimizations are added quickly and often
  • Very active, enthusiastic, and helpful user forum, get help quickly
  • Fantastic and readable user-created user guide
  • An honest business model that aims to provide the best possible user experience