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

v6.51

+ Batch converter: fix incorrect conversion when converting multiple media items [t=263866]

+ Batch converter: only show "scan subdirectories?" prompt once when importing multiple folders [p=2533273]

+ Global key bindings: do not treat non-editable combo boxes as text fields

+ MIDI: fix dropped events at certain tempo changes (6.50 regression) [t=263897]

+ MIDI editor: prevent note edits jumping to the previous/next loop iteration when snapping [t=261839]

+ Pan: ensure that "linear scale above -3dB" checkbox is enabled [p=2532677]

+ Razor edits: fix grouping of existing items after pasting razor edits with "trim content behind" enabled [t=263654]

v6.50

+ API: allow accelerators to hook keyboard for more windows including mixer, navigator, etc [t=263487]

+ Batch converter: support converting multiple files in parallel, utilizing multiple CPUs

+ Batch converter: improve responsiveness and RAM usage when converting a large file list

+ Batch converter: display the number of files and directories in the file list

+ Batch converter: display progress bar if conversion takes more than a short time

+ Batch converter: add when adding directory to file list, prompt to include subdirectories as well

+ Batch converter: add option to use source subdirectory structure to create output directories

+ Batch converter: add option to overwrite original files

+ Batch converter: add option to suppress notification when finished

+ Batch converter: add "save settings" button (does not save file list)

+ Batch converter: reorganize controls to separate settings that are not included in presets

+ Batch converter: include dither, noise shaping settings with presets

+ Batch converter: add preset menu item to clear all converter settings

+ Batch converter: add context menu actions to fit file list columns to screen, open input or output path, display input media properties

+ Batch converter: after canceled conversion, convert and remove buttons offer to affect only converted/not-yet-converted files, or all files

+ Batch converter: change default output file pattern to "$source-converted"

+ Batch converter: delete incomplete output file on user cancel

+ Batch converter: don't embed project-specific metadata

+ Batch converter: preserve very long metadata correctly

+ Batch converter: support $track, $tracknumber, $itemnumber wildcards, which will resolve to the project state at the time the media item was added to the file list [t=262781]

+ Batch converter: update $samplerate wildcard correctly when changing sample rate

+ Batch converter: allow FX to change processing channel count via pin connector dialog or JSFX channel mapper/downmixer

+ Batch converter: fix lost FX tail setting when closing/reopening dialog

+ Defaults: set default master track pan mode to stereo balance for new projects

+ Defaults: save/load master track pan law, pan mode with default project settings

+ FX: allow JSFX channel mapper/downmixer to change monitoring FX processing channel count

+ FX: improve behavior of FX drag/drop and TrackFX_CopyToTrack() etc when copying FX to a later slot on the same chain [t=263461]

+ FX: fix incorrect project save/load of parameter modulation and linking when applied to ReaPlugs (6.48 regression)

+ Media: improve zoomed-in peaks performance, especially on compressed media

+ Media: improve performance when using large block sizes and small media buffer settings

+ Media explorer: fix peaks display build restarting when seeking with output routed to a track [p=2532186]

+ Media explorer: improve seek behavior when autoplay, start-on-bar, and tempo matching are all enabled

+ Media explorer: refresh display correctly after completing search [t=245536]

+ MIDI: do not remove duplicate note on/off events on import [p=2527130]

+ MIDI: send note-off for active notes when seeking [t=260429]

+ MIDI: fix incorrect event duplication when exploding certain MIDI content by channel [t=261174]

+ MIDI: improve tick-to-sample rounding

+ Mouse modifiers: display and group media item lower half actions similarly to media item actions in preferences dropdown

+ ReaScript/JSFX: fix displaying strings containing multiple newlines in a row [t=263537]

+ Render: ensure peaks display is fully updated for each rendered region

+ Render: fix enabling/disabling render loudness statistics from completed render dialog

+ Undo: ensure undo point is created after running action to remove content behind items [t=263577]

+ VST: report channel index namespace context to plugins [t=263201]

+ VST: fix some misbehaving UI sizing plugins [p=2531463]

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