Nectar, a Rust-like React that compiles to WebAssembly

In plain words

Nectar is a programming language that compiles web applications to WebAssembly, with JavaScript reduced to a minimal 10 KB bridge to the DOM. It provides React-like ergonomics for developers writing in a Rust-inspired syntax, handling app logic, state management, and rendering entirely in WASM. The compiler uses signal-driven rendering to update only changed DOM nodes efficiently, targeting developers who want performance improvements and reduced JavaScript overhead in web applications.

written from the facts on this page · September 2026

From the sources

Nectar is a compiled-to-WebAssembly language that eliminates JavaScript from your stack. One binary compiler. Zero dependencies. Pure performance.

Nectar compiles to WebAssembly. One language, one binary, zero dependencies. Your entire app — logic, state, rendering — runs in WASM. JavaScript is reduced to a 10 KB syscall layer. Note: The Svelte demo may time out on first load with 10K products. Try refreshing if it appears blank. One Rust binary handles everything: compile, format, lint, test, dev server, LSP, package management, SSR. No toolchain to configure. O(1) updates per binding. No virtual DOM, no diffing, no reconciliation. When a signal changes, only the exact DOM node updates. Rust-inspired borrow checker, type system, and exhaustive pattern matching. Catch bugs before they ship — not in production. No npm, no node_modules,…from buildnectar.com

In the maker’s words, at launch

After a pretty rough gig experience, I wanted to remind myself that I was a vaguely capable developer. I had recently jumped on the Rust train and wanted a Rust equivalent of React that is more performant and easier to work with. I also wondered if I could effectively eject Javascript. This project came from that...…

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