oj
oj is The benchmark in the blog post is somewhat misleading. It notes the Vite cold start time includes the significant overhead of vite-plugin-checker, which oj does. It is ranked #57 on the Dev Radar, in Web frameworks, first seen 4 days ago and shared in 3 posts (497.3k views).
What oj says about itself
An experimental Rust-native build tool for React apps. - lovablelabs/oj
What people said about oj on X
We rewrote the vite dev server in rust. By removing Node.js, we achieved 4x better memory usage and cold starts is 2x faster. This has resulted in our sandboxes acquisition time to go from 14s to 3s (4.6x improvement). When i say we, i mean @raphamorims
— @FabianHedin, 4 days ago · 1k likes · see the post
Thoughts on oj: 1. It is an impressive project and solves Lovable's problem well. Great work! 2. It is not an entire rewrite of Vite. It is built on the same foundation of Rolldown / Oxc maintained by the VoidZero team, with only the dev server parts rewritten in Rust. 3. Hyper-customization pays off, with different…
— @evanyou, 3 days ago · 912 likes · see the post
Today I am moving OJ to @Lovable I started OJ out of frustration watching Vite eat gigabytes under my agents. Now it's open source at https://github.com/lovablelabs/oj and rolling out under real Lovable previews. More to be shared soon 🍊
— @raphamorims, 4 days ago · 226 likes · see the post
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oj in numbers
- Rank on the Dev Radar: #57 of 1225
- Shared in 3 posts by 3 accounts: @FabianHedin, @evanyou, @raphamorims
- 497.3k views on those posts
- First seen 4 days ago, last shared 3 days ago
- Pricing seen by Jev: open source
- Market: Web frameworks
FAQ
What is oj?
The benchmark in the blog post is somewhat misleading. It notes the Vite cold start time includes the significant overhead of vite-plugin-checker, which oj does It was first shared on X 4 days ago and is ranked #57 on the Dev Radar.
Is oj free?
It is open source.
Who shared oj?
3 accounts on X, including @FabianHedin, @evanyou, @raphamorims, in 3 posts totalling 497.3k views.
Every post is read and classified by Jev (TypeSafe): what it is, which market it belongs to, and whether the link is a real tool. 11.2k posts from 4.9k X accounts over the last 21 days, 1.2k tools, 12 markets. Collected every 5 minutes, fully re-ranked every hour — last update 2026-09-19 16:08 UTC. Full method.