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REAPER supports all Windows version from Windows XP to Windows 10.

The Windows version also works well with WINE.

REAPER supports all macOS X versions from 10.5* to 10.12.

Windows 32-bit
REAPER v5.40 - 9MB
Windows XP/Vista/7/8/10
Windows 64-bit
REAPER v5.40 - 11MB
Windows XP/Vista/7/8/10 x64
OS X 32-bit
REAPER v5.40 - 14MB
OS X 10.5-10.12
OS X 64-bit
REAPER v5.40 - 16MB
OS X 10.5-10.12
REAPER 5.40: The night is dark and full of terrors
Changelog items below may include links to more information.
  • add spectrogram display mode, per-item spectrogram option - video
  • improve support for editing media items containing .wav files which are being recorded in a separate tab
  • support swing grid in arrange view, optionally synchronized with MIDI editor grid - video
  • allow grid/snap window to stay open if enabled in advanced preferences
  • move grid appearance options from grid/snap window to preferences/appearance
  • allow absolute MIDI CC control of swing grid strength
  • create new take on "open item copy in built-in MIDI editor" action
  • set MIDI clock properly when exporting to .mid file
  • support ".midi" as an importable file extension, in addition to the usual ".mid"
  • fix "paint straight line of notes" mouse modifier when grid is set to greater than or equal to measure length
  • support item_*_hidpi.png on Windows/HiDPI themes
  • use common dialog font for various elements in envelope, send windows
  • allow themes to override global UI scaling using rtconfig.txt global_scale line
  • better logic for knob large/small background selection
Anticipative FX
  • improve behavior when stopping
  • reduce memory use when smooth seek enabled
  • fix reading slider zero-line colors from theme
  • add retina support for track panels/etc using beta HiDPI/Retina theme
  • improve handling of large theme fonts
Notation editor
  • automatically scroll view when entering lyrics
  • ignore muted notes in PDF and MusicXML export
  • add Track/TakeFX_Get/SetNamedConfigParm
  • include latent preset changes in Undo_EndBlock()
  • improve ASIO cleanup after initialization error
  • improve HiDPI support (including Windows 7 DPI detection), support beta HiDPI/Retina theme
Media explorer
  • fix folder icon display error on macOS 10.10
Project load
  • add recovery mode checkbox to optional choose-project-on-open dialog
  • support TrackFX_SetNamedConfigParm and similar API functions with FILE, FILExx, -FILExx, +FILExx, -FILE*, DONE, RSMODE, MODE
  • support TrackFX_SetNamedConfigParm and similar API functions with ITEMx, DONE
  • improve undo behavior for various editing actions
  • fix resolving VST3 by UID on first scan

    Old Versions
    Language Packs
    Theme Development
    Custom Cursors
    JSFX Programming
    Extensions SDK
    Extensions to VST SDK
    Language Pack Template
    User Guide