PRISM Download

Free for Windows 10 & 11

It already happened.
Save it.

Prism keeps the last few minutes of your screen ready to go. Press one hotkey and the moment you just missed is a clip. Recording, screenshots, voice cleanup and key remapping live in the same small app.

Download for WindowsWindows 10 & 11 · 64-bit View the source
Instant replayOn This page
0:00of 5:00 buffered
-5:00Now

This buffer started when you opened the page. Try it. Each save keeps only what's new, just like the app.

Prism's Instant Replay page: a segmented buffer bar showing 4:14 of 5:00, a Save button, audio sources and output settings.

One app

One beam in.
Four tools out.

Instant ReplayUp to 20 minutes back, on one hotkey Screen CaptureScreenshots and recordings AudioYour voice, your mix Key RemapKeys that do what you want

01 / Instant Replay

Never ask “did you get that?” again.

Prism records with your GPU's hardware encoder into a rolling buffer. When something happens, one hotkey saves it. Full recordings run alongside the buffer on the same encoder, at no extra cost.

Then trim it in the clip editor: fast keyframe cuts, or frame-exact on the GPU, with each audio track kept, adjusted or removed.

Buffer
15 s to 20 min
Encoders
NVENC · AMF · QSV
Codecs
H.264 · HEVC · AV1
Audio
Mix + System + Mic tracks
Games
Follows fullscreen games, files clips by game
Alt+QPoint at a slice
The launcher. Hold Alt+Q anywhere, point, release. Go on, point at it.

02 / Screen Capture

Screenshots that stay editable until you copy.

Drag an area, click a window or take the whole monitor. Arrows, boxes, text, numbered steps and blur all stay live objects you can move, restyle and undo. Enter copies it, straight into whatever you're doing.

Marks
Arrow, line, box, ellipse, pen, highlighter, text, steps, blur
Record
MP4 or GIF at 30 or 60 FPS
Picker
Magnifier and colour picker built in
Prism's Screen Capture page with hotkeys for area, whole screen and recording, mark-up tools and recording options.

03 / Audio

Sound like you bought a better mic.

Clean up your voice with RNNoise or DeepFilterNet3, running entirely on your PC, and send it to Discord or any app through a virtual cable. A mixer plays your PC's sound on several devices at once, each with its own EQ and up to 200% volume.

Set a phrase like “clip that” and Prism saves a replay when you say it.

Voice
Noise removal, EQ, compressor, de-esser
Mixer
Per-device faders and EQ presets
Privacy
All processing stays on this PC
Prism's Audio page: a mixer with faders and level meters for voice, PC sound, speakers, a second device and the call microphone.

04 / Key Remap

Caps Lock can finally do something useful.

Press the key you want to change, then press what it should do. Remaps work in every app, even with Prism's window closed to the tray, and one switch turns them all off when you need your keyboard back.

Default
Caps Lock → Escape
Also
Disable a key, map media keys, turn off the Windows key
Saved
Instantly, no restart
Prism's Key Remap page listing Caps Lock to Escape and other remaps, with one-click suggestions.
No accountInstall it and press Alt+Q. There's nothing to sign in to.
No telemetryYour clips stay on your drive. Prism only goes online to check for updates, or to fetch the audio cable if you ask it to.
Open sourceGPL licensed, built on libobs and FFmpeg. Read every line.
Updates itselfSigned updates fetch only the files that changed, then restart in seconds.

The next good moment
is already on its way.

Download PrismWindows 10 & 11 · 64-bit
  1. Run the installerIt installs for your account only, with no administrator prompt.
  2. If Windows warns youPrism isn't code-signed yet, so SmartScreen may appear. Choose More info, then Run anyway.
  3. Press Alt+QThat's the launcher. Instant Replay can be running a minute from now.
Needs
Windows 10 or 11, 64-bit, and a GPU with NVENC, AMF or Quick Sync
Version
See the latest release
SHA-256
Removing it
Apps & features. Your clips and settings are kept.