- Themes: a plugin theme is an `appearance.theme` value (`plugin:<id>/<theme>`), offered by Settings › Appearance (and the preferred themes of Sync with OS), Quick Switch, the toolbar gear menu and Welcome › Customize. The project window selects it in the plugin host; picking a built-in theme clears it. While its plugin is off, the built-in theme of its kind shows and the choice is kept. - File icon themes: chosen in Settings › Appearance › File icon theme and kept in `appearance.fileIconTheme`, so every window follows. - Keymap: plugins' default shortcuts show in Settings › Keymap as the defaults of their actions: removable, changeable, resettable and part of conflict checks. - Problems: a plugin's problems are withdrawn when it stops, fails, is disabled or uninstalled. Settings › Inspections lists them under Plugins by plugin name; stored overrides of `plugin:` producers parse correctly. - Status bar items of plugins are named in the status bar menu and can be hidden. - Languages added or removed by plugins refresh Override File Type, the Code Style pages and Inspections without a restart. - Uninstalling a plugin deletes the secrets it declared. - The Settings window follows plugin changes made elsewhere. - The plugin system is marked Preview (Settings › Plugins, README); Harbor Night is versioned 0.1.0 like the other official plugins. - Release: the official plugins are packed, signed (secret PLUGIN_SIGNING_KEY) and indexed into the release as `plugins-index.json`; released builds use it as the default marketplace. Without the key the step is skipped.
The IDE you know, rebuilt in Rust.
Download · Benchmark · Discord
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.
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.