OpenIDEA Launches: Rust Rebuild of IntelliJ with Faster Startup and Lower Memory

1 reports archived1 independent sourcesupdated 11/1/2026, 17:15:26

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Open-source IDE OpenIDEA has launched, rebuilding the IntelliJ IDEA workflow using a native Rust core. Benchmarks demonstrate significant improvements in startup speed, memory footprint, and CPU efficiency compared to standard IntelliJ, supporting 60+ languages across macOS, Windows, and Linux.

LATEST/Open-source IDE OpenIDEA has launched, rebuilding the IntelliJ IDEA workflow using a native Rust core. Benchmarks demonstrate significant improvements in startup speed, memory footprint, and CPU efficiency compared to standard IntelliJ, supporting 60+ languages across macOS, Windows, and Linux.

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Hacker News AIT2Nov 1, 17:15·68 pts
OpenIDEA Launches: Rust Rebuild of IntelliJ with Faster Startup and Lower Memory
- Built on a native Rust core, replicating IntelliJ's keymaps, tool windows, and search habits
- Benchmarks show startup time reduced to 1.1s and memory usage dropped to 169MB (vs. IntelliJ's 13.2s/2GB)
- Supports 60+ programming languages with integrated debugging, Git, database, and HTTP clients
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