Jaw
4410da60a2
The side-by-side diff gets two independent options. Synchronize Scrolling (toolbar lock, also in the settings menu, on by default) scrolls both panes together; Align Changes (settings menu, off by default) pads the panes so changes line up. With Align Changes off, the panes keep their own heights and a divider of curved bands joins each change, with arrows to apply it; scrolling one pane moves the other through the matching change (anchored at a third of the height), including caret moves and the wheel over the divider. Scroll mapping and the divider look up changes by binary search, so large files with thousands of changes scroll smoothly. Claude-Session: https://claude.ai/code/session_01Dq6jQQn8ZhRfkkyj3PRutA Co-authored-by: jaw52 <53564781+jaw52@users.noreply.github.com>
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.