l0ng-ai
1e4eee27c4
* test(lsp): smoke-test everyday code intelligence per language with real servers A new ide-host integration test drives completion, go to definition, Find Usages, hover, diagnostics with a quick fix, an intention, formatting and rename on each language's fixtures/ project, through the ops the app's commands call and the language server the app starts by default: TypeScript (vtsls), Python (basedpyright + Ruff), Rust (rust-analyzer), Go (gopls), Java (jdtls) and Kotlin (kotlin-lsp). A failure names the language and the operation. The tests are ignored by default; a Language smoke workflow installs pinned server versions and runs one language per job on changes to crates/, languages/ and fixtures/. Adds fixtures/java-app (Maven, JDK 21) for Java. * test(lsp): rename TypeScript from a usage and check Rust errors while typing Covers the fixes the smoke test turned up: a TypeScript rename started at a call site in another file renames the declaration (#1301), and rust-analyzer's own diagnostics and fixes arrive without saving (#1306).
The IDE you know, rebuilt in Rust.
Download · Benchmark · Plugins · 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.
Plugins
Plugins add actions, completion, quick fixes, tool windows, custom editors, themes, file icons and languages. They run as sandboxed WebAssembly components; themes, icon themes and languages need no code at all.
Install them from Settings › Plugins, or start your own with
openidea-plugin new — see Writing OpenIDEA plugins and
the official plugins. The plugin API is still a preview.
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.