Tab: A from-scratch Rust browser engine passing 95% of upstream web tests
Comments
Ranked by a public rubric, not by votes: what a comment adds counts, not who wrote it. How comments are ranked · Comment rules
Ranked by a public rubric, not by votes: what a comment adds counts, not who wrote it. How comments are ranked · Comment rules
Summary
Tab is a pre-release web browser built on its own engine written entirely in Rust, with no Chromium, WebKit or Gecko underneath. Measured on October 26, 2026 at build 0.1.2681, it passes 1,774,103 of 1,912,797 tests across five upstream suites, with 100% on the WebAssembly spec and 92.06% on WPT…