foxguard
A fast universal code security scanner, written in Rust. Batteries included: supports 14 languages, TUI for triage, secrets, post-quantum audits, diff-aware scans and more π₯
foxguard is an open-source linters and formatters project on GitHub under the MIT license (permissive), with 308 stars. It is built with Rust, CPython, Axum and Tokio. Its last push was 2 days ago.
- Stars
- 308
- License
- MIT
- Activity
- Active
- Latest release
- v0.14.1
Judgement
- What it is
- Developer tool
- What it does
- A command-line security scanner written in Rust with over 200 built-in rules, taint tracking, secrets detection, dependency checks against OSV and post-quantum crypto audits. It can load most Semgrep and OpenGrep rules and outputs SARIF and CycloneDX.
- Adopt it when
- You want a fast local or CI static-analysis scan across several languages and already have Semgrep-style rules you want to reuse.
- Watch out
- It is eight months old, still on 0.x, and its rule coverage and false-positive rate are unproven against long-established scanners.
- Ready for
- Usable
- Runs as
- Command line
- Built with
- Rust, tree-sitter and Python
- How established
- Young: started 7 months ago, latest release v0.14.1.
- What the license allows
- You can build it into a product you sell, as long as you keep its copyright notice.
Judged on 2026-11-06 from the project's README and GitHub data. The license and age lines are worked out directly.
Built from
Open-source alternatives to foxguard
-
1
Prettier prettier
Prettier is an opinionated code formatter.
Developer tool Production-ready A web team wants to stop arguing about formatting and use the formatter that nearly every editor and framework already supports.
β 52k MIT JavaScript Active, pushed today
-
2
Ruff astral-sh
An extremely fast Python linter and code formatter, written in Rust.
Developer tool Production-ready You want to replace Flake8, isort and Black in a Python project with one tool that runs in a fraction of the time.
β 50k MIT Rust Active, pushed today
-
3
Black psf
The uncompromising Python code formatter
Developer tool Production-ready A Python team wants formatting settled automatically and is not already using Ruff's compatible formatter.
β 42k MIT Python Active, pushed yesterday
-
4
ShellCheck koalaman
ShellCheck, a static analysis tool for shell scripts
Developer tool Production-ready Your repositories contain shell scripts, especially in CI or deployment, and you want common mistakes caught before they run.
β 40k GPL-3.0 Haskell Active, pushed today
-
5
ESLint eslint
Find and fix problems in your JavaScript code.
Developer tool Production-ready You need the JavaScript linter with the largest rule and plugin ecosystem, including framework-specific rules for React, Vue and others.
β 28k MIT JavaScript Active, pushed today
-
6
Biome biomejs
A toolchain for web projects, aimed to provide functionalities to maintain them. Biome offers formatter and linter, usable via CLI and LSP.
Developer tool Production-ready You want to replace ESLint plus Prettier in a web project with a single fast tool and can live with its built-in rule set.
β 26k Apache-2.0 Rust Active, pushed today
-
7
Oxc oxc-project
β A collection of high-performance JavaScript tools.
Developer tool Usable Linting is slow on a large JavaScript codebase and you want Oxlint alongside or instead of ESLint, or you build tooling that needs a fast parser.
β 23k MIT Rust Active, pushed today
-
8
mypy python
Optional static typing for Python
Developer tool Production-ready A growing Python codebase uses type hints and you want the reference checker that most typing features land in first.
β 21k See repository Python Active, pushed today
Stars, license and activity come from GitHub and refresh on a rolling hourly schedule. The project's own description is quoted as written.