Jacob Kjeldahlandkjeldahl
653ebd578a
Ruby LSP showed Crashed and restarted for two reasons. A version-manager shim for ruby-lsp exists for every Ruby that ever had the gem, so when the active Ruby lacked it the shim exited on every start while the IDE counted the server as installed. And the IDE-managed copy lived in a gem home under Application Support, whose space broke ruby-lsp's re-exec through Bundler. Shims that can't run the tool now count as missing. ruby-lsp is installed with the project's own Ruby (gem install in the project, so a version manager picks its Ruby). Its executable is looked up in that Ruby's gem bindir and user bin when they are off PATH (Homebrew), and those directories are added to the server's PATH. Co-authored-by: kjeldahl <19719+kjeldahl@users.noreply.github.com>
The IDE you know, rebuilt in Rust.
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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.
Community
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Discord — questions, feedback and release news.
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WeChat group — scan to join:
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.