browser vs moli
From-scratch headless browser in Zig for AI agents and automation — CDP-compatible (Puppeteer/Playwright connect as-is) at ~9x the speed and ~16x less memory than headless Chrome. — versus — Rust headless browser for AI agents on Servo/Stylo components: fetch pages as Markdown or a semantic tree, automate via CDP, WebDriver or BiDi — about 13% of Chrome's memory per task.
Both are from-scratch headless browsers for agents that Puppeteer/Playwright drive over CDP at a fraction of Chrome's cost; the Zig one is leaner on memory, Moli completed more tasks in Moli's own benchmark.
| browser | moli | |
|---|---|---|
| Stars | 36k | 16k |
| Forks | 1.7k | 401 |
| Language | Zig | Rust |
| License | AGPL-3.0 | Apache-2.0 |
| Last activity | 3 days ago | today |
| Topics | web | web, agents |
| Curated connections | 6 | 2 |
browser — the curator's take
Use it as a drop-in headless-Chrome replacement when browser cost dominates — mass crawling, RAG ingestion, agent fleets — where its Zig-native footprint (~16x less memory, ~9x faster) pays off and your automation only needs CDP. Not a fit if you depend on full Chromium fidelity (heavy SPAs, extensions, DRM/media, exotic web APIs): it's a young engine still filling in web-platform coverage. Note the AGPL-3.0 license before embedding in a closed product.
moli — the curator's take
Use it when you run lots of agent browsing and Chrome's ~700 MiB per task is the bill — Playwright connects over CDP unchanged, and `moli fetch --dump markdown` covers most read-the-web needs. It completed ~82% of its own benchmark's tasks vs Chrome's ~99.8%, so keep Chrome as the fallback for complex sites; no pixel-perfect rendering promise. Versus Lightpanda's Zig browser: more tasks completed, more memory used.