Root cause: the Git Log already supported multi-selection, but the Changes pane only read the last clicked commit and the backend had no "changes across several commits" query. Fix (IDEA): ide-vcs Repo::commits_changes merges per-file changes across selected commits (before the first touching commit ↔ after the last, renames chained, add-then-delete dropped); the details pane shows "N files in M commits" with the commit list; exactly two commits get "Compare Versions" (version ↔ version dialog, also fixing added/deleted sides). Siblings covered: Show History for file/folder (same log), Local History multi-select (oldest ↔ newest diff). Verified: ide-vcs tests incl. temp-repo commits_changes, vcs vitest (143), in-app on macOS: 3 contiguous commits → "2 files in 3 commits"; Cmd-click 2 commits → Compare Versions lists the right files. Claude-Session: https://claude.ai/code/session_01VUYsdXA2nkF5v6zsC93dpn
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.
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