Show HN: OJ – A drop-in replacement for Vite in Rust

Category: devtools

Tags: rust, build-tool, vite-alternative, react, ssr, bundler, performance

Score: 7.8/10 (Innovation: 7, Technical: 9, Documentation: 8, Utility: 7)

OJ is a Rust-native build tool for React apps designed as a drop-in replacement for Vite, focused on reducing memory usage and cold start times in CI and multi-tenant environments. It achieves 8-15x lower memory usage and faster builds while maintaining compatibility with Vite plugins, SSR, and frameworks like TanStack Start, using oxc and Rolldown under the hood.

Target audience: frontend developers, devops engineers

Repository: https://github.com/lovablelabs/oj · Rust · MIT · 510 stars

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