I’m very happy to finally share this: the first public alpha of Comp is now available to everyone.

What started as a personal side project has grown into a small cross-platform, node-based compositing application with a practical toolset for many everyday 2D compositing tasks.

It is still an early alpha, so there will be rough edges - but it is ready to be tested by a wider community.

Here’s what is actually available in the current build:

Image pipeline and rendering

• 32-bit linear floating-point processing

• OpenEXR layer and channel support

• Experimental OpenColorIO support

• Multi-threaded rendering and background processing

• Smart per-node caching

• Headless rendering mode

• ARM and x64 support

Viewer and node graph

• GPU-accelerated Viewer

• Experimental HDR display support

• Familiar playback transport controls

• Viewer information overlay

• Cache-usage indicators for individual nodes and on the Viewer timeline

• More informative node tiles

• Hotkeys for creating nodes and switching active Viewer inputs

• Copying and pasting complete node setups as text-based JSON

• Undo and redo

• Autosave

Animation and procedural controls

• Parameter animation with keyframes

• Math expressions

• References to numeric parameters and string parameters

• Fractional keyframes in the curve editor

Color and image processing

• Exposure, Grade, and Saturation controls

• Non-destructive Grade operation chains

• Premult and Unpremult operations

• Blur, Glow, Invert

• Depth-based Defocus with artistic controls

• V-BM3D-based Denoise

• Noise generation

• Film-style Grain

• Richard Frazer’s Colour Smear workflow

• Erode and Dilate, including a simpler workflow for positive and negative operations

Compositing and channel tools

• Merge, KeyMix, ChannelMerge, ChannelModify and Shuffle

• Additional Mask inputs for Merge, ChannelMerge, KeyMix, and Shuffle

Keying

• Keyer

• Despill

• ScreenColor and ScreenKey for an IBK-style workflow

• Multikeyer for building an alpha from multiple color probes

Roto and AI automatic mattes

• Roto shape creation and animation

• Lifetime controls for individual Roto points

• Conversion of raster mattes into editable shapes

• Two raster-to-shape solvers, including one designed to preserve consistent topology

• Experimental conversion of raster mattes into animated shapes

• AutoMatte using SAM3 for initial segmentation and MatAnyone2 for refinement

• AutoMatte processing on a local machine or another machine over the network

Transforms, warping, and tracking

• Transform with motion blur

• Multiple Transform filtering modes

• Limited Transform concatenation

• Reformat

• CornerPin

• GridWarp

• STMap and iDistort

• LatLongTransform

• Point and Planar tracking

Time tools

• FrameHold with keyframe and expression support

• Frame-blended and Optical-flow slow motion

• FrameBlend for combining frames from a selected range

• Multiple FrameBlend blending modes

Input, output, and utility nodes

• Input and Output nodes

• Constant image generator

• MetadataView

This is exactly the stage where I need more eyes, more machines, more unusual footage, and more node graphs built in ways I would never think of myself.

So please try it, break it, and let me know where it behaves strangely.

Download Comp: https://github.com/ukmsz/Comp-releases

Thank you to everyone who has followed the project, tested early builds, sent ideas, or simply encouraged me to keep going.

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Comp app: alpha release