This is portable version of REAPER. Cockos REAPER is a powerful but sensible Windows application that lets you record, arrange, edit, and render multi-track waveform audio. 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).

► Basic features:

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

v6.57 - May 7 2022

+ Appearance: add separate preferences for drawing labels above media items, and hiding media item labels, at specific media item heights

+ Appearance: do not draw media item labels above the item if the item would be smaller than the label

+ Drag and drop: improve preview display when dragging to insert-new-track area [t=266091]

+ Drawing: improve drawing performance with thousands of very small items (6.54 performance regression) [t=266082]

+ FX: zero out PDC-compensated FX delay samples [t=265883]

+ FX: show combined oversample rate in chain view when both chain and instance oversampling are used

+ FX browser: allow removing LV2-created categories [t=265322]

+ lv2: support URL encoded filesystem specifications [t=265942]

+ macOS: add gen_vol*_dark and gen_pan*_dark theme elements for macOS dark mode [p=2549269]

+ macOS: fix horizontal mouse drag on mixer send controls [t=266121]

+ Media explorer: do not try to copy directories via drag/drop [t=265174]

+ Media items: actions to activate previous/next/etc take do not affect locked media items

+ Media items: allow opening and editing per-take FX on locked media items, but not alt/opt+click to delete all FX

+ Media items: allow vertical autoscroll when moving/copying items using certain customized mouse modifiers [p=2551896]

+ Media items: fix take marker display with certain zoom settings [t=266231]

+ Media items: improve interaction between item height preferences when using free item positioning [p=2552306]

+ MIDI editor: improve behavior of mouse modifier to delete all touched notes when moving the mouse quickly

+ MIDI editor: support loading raw sysex from file in sysex edit window

+ MIDI editor: use fixed-width font for sysex edit window

+ Notation editor: improve positioning of accidentals in chords [t=265378]

+ Opus: ensure all samples are flushed to file when rendering at sample rates other than 48k

+ Peaks: fix various sample-level view glitches [t=213166]

+ Performance: reduce realtime CPU use when repositioning edit cursor with playback stopped [t=265983]

+ Performance: improve recovery from media buffering underruns when using heavy per-item processing

+ Preferences: include more information/help in video decoder details window

+ Razor edits: fix editing bug when razor edit contains MIDI items in project with timebase time and partial measures [p=2554747]

+ Razor edits: simplify display of pre-edited razor edit areas [p=2552009]

+ Razor edits: add mouse modifiers to move areas disabling or temporarily enabling ripple edit

+ Razor edits: fix mouse-position-dependent snapping [t=265343]

+ ReaScript: increase precision of razor edit start/end position as returned by GetSetMediaTrackInfo("P_RAZOREDITS") [t=266177]

+ Recent projects: add option to display customized project title (set in Project Settings/Notes) in recent projects menu and prompt [t=225274]

+ Recent projects: add option to display either file part or full path in list

+ Render: fix issues with peaks and dither when channel counts are conformed by output (e.g. multichannel forced to stereo by CD or DDP render)

+ Render: respect option to add rendered files to project when preference enabled to return to render settings window after render [t=266061]

+ Render: support rendering to mp3 (as primary or secondary output) when processing at sample rates higher than 48k

+ Render: when rendering selected regions, if no regions are selected, render all regions

+ Render: improve error message details

+ Theme: add theme elements for inactive takes, applied separately from elements for muted/not-soloed tracks/items

+ Timestretch: add new Rrreeaaa (polyphase synthesis) stretching mode, useful for artistic stretches

+ Undo: improve undo behavior for actions/scripts that did not previously set the correct undo flags

+ Video: support native decoding and rendering of .wma, .wmv, and mpeg-4 audio/video via Windows Media Foundation

+ Video: support embedding FLAC audio in WMF-encoded MP4/M4V (Windows 10 and later)

+ Video: improve performance when using video-only or audio-only media

+ Video: support encoding audio-only or video-only files with ffmpeg

+ Video: update Grid of Videos preset

+ Video: deprecate DirectShow video decode mode, must be manually re-enabled in preferences

+ VST3: clear all parameter info on kParamTitlesChanged [t=265989]

+ WALTER: allow specifying mcp.extmixer and master.mcp.extmixer to front command

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