Boa by boa-dev
Boa is an embeddable Javascript engine written in Rust.
About Boa
From the project's README at github.com/boa-dev/boa. Lightly cleaned for readability; for the full source see the upstream repo.
Boa is an experimental JavaScript lexer, parser and interpreter written in Rust , it has support for more than 90% of the latest ECMAScript specification. We continuously improve the conformance to keep up with the ever-evolving standard.
[![Build Status][buildbadge]][buildlink] [](https://codecov.io/gh/boa-dev/boa) [](https://crates.io/crates/boaengine) [](https://docs.rs/boaengine) [](https://discord.gg/tUFFk9Y) [](https://matrix.to/#/#boa:matrix.org)
[buildbadge]: https://github.com/boa-dev/boa/actions/workflows/rust.yml/badge.svg?event=push&branch=main [buildlink]: https://
Health score breakdown
6-dimension composite. See methodology for formula and weights.
Adoption signals
Real-world usage data, pulled from each registry. The bigger the numbers, the more battle-tested the project.
| Signal | Value | Source |
|---|---|---|
| GitHub stars | 7.2k | github.com/boa-dev/boa |
| GitHub forks | 626 | github.com/boa-dev/boa |
| CRATES downloads (last month) | 1.0k | boa |
Release & maintenance
Is this project actively maintained, or about to die? Check the recency of last commit and last release.
| Project age | 7.7 years | since Aug 2018 |
| Last commit | 5 days ago | May 2, 2026 |
| Releases shipped | 27 | last: 1 months ago |
| Security policy | SECURITY.md | declared by maintainers |
| Funding links | 1 | declared by maintainers |
Self-hosting cost across providers
Detected requirements: 4GB RAM, 40GB disk minimum. Cheapest plan per provider that meets the requirement.
| Provider | Plan | Specs | Monthly | |
|---|---|---|---|---|
| hetzner | CAX11 | 2c · 4GB · 40GB | $4.13 USD | Deploy → |
| vultr | VC2 | 1c · 1GB · 25GB | $5 USD | Deploy → |
| linode | Nanode 1GB | 1c · 1GB · 25GB | $5.12 USD | Deploy → |
| digitalocean | Basic Regular 1GB | 1c · 1GB · 25GB | $6 USD | Deploy → |
Security advisories
CVE-2024-43367. What people say on Hacker News
Ready to self-host Boa?
Spin up a hetzner CAX11 (4GB RAM, 40GB disk) for $4.13/mo and follow the project's official install docs.
Data last refreshed May 7, 2026.
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