l0ng-ai
c8cea62eab
Greyscale antialiasing mapped to `-webkit-font-smoothing: antialiased`, which drops macOS stem darkening, so editor and UI text rendered thinner and syntax colours looked lighter than PyCharm's. Use `auto` instead. Align lezer tag mappings with PyCharm's Light scheme: - HTML/XML: `<!doctype>` is plain text (documentMeta is a sub-tag of meta). - CSS/SCSS/Sass: property names use the attribute colour; values and units the attribute-value colour; class, id, pseudo, colour and url() the tag colour. - YAML: keys are keywords. - Markdown: quotes are strings with keyword markers, link destinations italic function colour, titles strings, horizontal rules keywords. Claude-Session: https://claude.ai/code/session_01SaPPsVPuk6ZTNsoUCNCbMv
The IDE you know, rebuilt in Rust.
https://github.com/user-attachments/assets/234dd54c-1255-4b3a-b35c-533d78d737c0
OpenIDEA brings the IntelliJ IDEA way of working — its keymap, its tool windows, its search-everything habits — to a native app with a Rust core.
Editor, code insight, debugger, Git, terminal, database and HTTP clients, for 60+ languages. Builds for macOS, Windows and Linux.
Benchmark
Opening freqtrade (Python, ~770 files) with warm caches, median of 5 runs:
| OpenIDEA | IntelliJ IDEA 2026.2.3 | |
|---|---|---|
| Window with the project | 0.9 s | 3.1 s |
| Ready (CPU settled) | 1.1 s | 13.2 s |
| Memory (USS, all processes) | 169 MB | 2011 MB |
| CPU time until ready | 2.4 s | 47.9 s |
| Idle CPU | 4 % of a core | 7 % of a core |
| Quit | 0.3 s | 5.9 s |
A release build of OpenIDEA from main and IDEA with default settings and plugins, on
Windows 11, 32-core AMD, 62 GB RAM.
IDEA analyses Python more deeply, so "ready" doesn't mean the same work on
both sides. Both are measured from the outside, the same way: see
perf/compare to run it on your machine and projects.
Build
pnpm install
pnpm tauri dev
Rust 1.96, Node 22, pnpm and the Tauri prerequisites.
License
Apache 2.0. Bundled third-party assets are listed in THIRD_PARTY_LICENSES.md.
Not affiliated with JetBrains. IntelliJ IDEA is a trademark of JetBrains s.r.o.