# icosa-foundation/open-brush

Open Brush is the open source, community led evolution of Tilt Brush! Forked from https://github.com/googlevr/tilt-brush

Repository: https://github.com/icosa-foundation/open-brush
Canonical: https://ross.abutalabs.com/products/open-brush
Homepage: https://openbrush.app
Language: C#
License: Apache-2.0
License Family: permissive
Topics: art, vr, virtual-reality, painting, unity, unity3d, ar, xr, mr, tiltbrush, meta-quest, openxr, quest, openbrush
Last push: 2026-09-02T17:39:05+00:00

## Health v2 (maintenance only)
Score: 100/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 100, release rhythm 100, longevity 100
- inputs: {"age_days": 2045, "days_push": 0, "days_rel": 1, "gap_med": 8, "n_releases_24m": 24}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1122, forks 238 (observed 2026-09-03T02:15:12.846003+00:00)

## What it is
Open Brush is a free, community-led open source fork of Google's Tilt Brush, a room-scale 3D painting application for virtual reality built in Unity. It lets users paint in 3D space with a wide variety of brushes and effects across modern XR headsets and desktop VR.

## Use cases
- paint 3D artwork in virtual reality
- create room-scale drawings with VR brush strokes
- continue using Tilt Brush after Google archived it
- export and share VR paintings on an open gallery
- contribute to or fork an open source VR art app
- run 3D painting on Meta Quest, SteamVR, or Pico headsets

## When to choose
- you want a free, open source VR 3D painting tool
- you need an actively maintained alternative to the archived Tilt Brush
- you want to modify or extend a VR painting app in Unity/C#
- you use modern headsets like Quest or Pico with OpenXR support

## When to avoid
- you need 2D image editing or traditional digital painting
- you have no VR hardware and want desktop-only 3D modeling
- you need professional CAD or mesh modeling tools rather than expressive brush strokes

## Facets
- artifact type: application
- maturity: active
- function: graphics, gui, game-engine
- domain: graphics, cross-platform
- platform: windows, cross-platform, game-engine
- tags: vr, xr, openxr, tilt-brush, 3d-painting, unity, meta-quest, creative-tools, open-source-fork, game-development, art, android

## Member repositories
- icosa-foundation/open-brush (main) score 100

## Provenance
- Observed fields: from GitHub, fetched 2026-09-03T02:15:12.846003+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T06:41:06.097804+00:00, confidence not recorded.
  - readme: https://github.com/icosa-foundation/open-brush (fetched 2026-09-03T02:15:12.846003+00:00, sha d2c1da10a326)
  - homepage: https://openbrush.app (fetched 2026-08-29T12:44:53.787385+00:00, sha 1884c9321e22)
  - site_page: https://docs.openbrush.app (fetched 2026-08-29T12:44:53.796304+00:00, sha b326c2d2351f)
  - site_page: https://docs.openbrush.app/ (fetched 2026-08-29T12:44:53.798297+00:00, sha b326c2d2351f)
- Data as of 2026-08-30T08:39:29.467469+00:00.