UnoEdit is a desktop-first port of AvalonEdit to Uno Platform and WinUI 3.
Current scope:
- Target Uno Skia Desktop (WinUI 3 port is included but not the primary focus).
- Do not target mobile during the bootstrap phase (v0.x.x).
- Port the document model and editor core as well as the Uno control shell.
- Windows 11 (Windows 10 may work but is not a primary target)
- macOS, 3 most recent versions from 2023-2025
- Ubuntu latest LTS (other Linux distributions may work but are not primary targets)
If you are looking for support of a specific platform, business sponsorship is the way to accelerate that work. Please reach out to us at homepage.
The main deliverable is a few NuGet packages:
The core editor component, including document model, editing engine, and platform-agnostic UI logic.
Optional TextMate integration library built on top of UnoEdit.
Clone this repo and check out the sample projects to see how to use UnoEdit in your own applications (Uno Platform and WinUI 3).
- Public API parity against AvalonEdit currently measures
193/193types and1296/1296members. - Behavioral parity is tracked separately with the local parity detector. The latest stub-aware pass reports
0suspected stubs. - The shared regression suite currently passes
281/281.
- Right-to-left text support
- IME support improvements (currently functional but not fully polished)
- Accessibility support (screen readers, keyboard navigation, etc.)
- Performance optimizations for large documents (virtualization, incremental layout, etc.)
- TextMate integration (functional but needs heavy polishing)
UnoEdit is licensed under the MIT License. See LICENSE for details.
Copyright (c) 2026, LeXtudio Inc. All rights reserved.
UnoEdit builds on and includes code from the AvalonEdit project (ICSharpCode.AvalonEdit).
AvalonEdit is licensed under the MIT License. See avalonedit/LICENSE and
THIRD_PARTY_NOTICES.md for attribution and full license text. The NuGet packages
produced by this repository also include the third-party license text and notices.