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#checker

Every repository in the public record carrying this tag — from its GitHub topics or the keywords its package registries publish. Health is measured under the same versioned methodology as the rest of the record.

42 records
Tagged “checker”Ranked by health index
PyPI
97Exceptionalhealth index
python/typing_extensions
Backported and experimental type hints for Python
Python★ 582↓ 1.6B/moSep 9, 2026
Custom licenseSep 9, 2026 · metrics 2.10.0
npm · crates.io · RubyGems
94Exceptionalhealth index
facebook/flow
Adds static typing to JavaScript to improve developer productivity and code quality.
Rust · JavaScript★ 22.3K↓ 74.9M/moSep 16, 2026
MITSep 16, 2026 · metrics 2.10.0
PyPI
94Exceptionalhealth index
python/typing
Python static typing home. Hosts the documentation and a user help forum.
Python★ 1,783↓ 4.3M/moSep 12, 2026
Custom licenseSep 12, 2026 · metrics 2.10.0
npm · Maven
94Exceptionalhealth index
validator/validator
The Nu Html Checker (vnu)
Java★ 1,981↓ 475K/moSep 11, 2026
MITSep 11, 2026 · metrics 2.10.0
npm
92Excellenthealth index
pa11y/pa11y
Pa11y is your automated accessibility testing pal
JavaScript · HTML★ 4,566↓ 1.1M/moOct 2, 2026
LGPL-3.0Oct 2, 2026 · metrics 2.10.0
PyPI
90Excellenthealth index
jorenham/optype
Opinionated typing package for precise type hints in Python
Python★ 94Sep 10, 2026
BSD-3-ClauseSep 10, 2026 · metrics 2.10.0
npm · Go
90Excellenthealth index
samchon/typia
Super-fast/easy runtime validators and serializers via transformation
Go · TypeScript★ 5,878↓ 2.3M/moAug 28, 2026
MITAug 28, 2026 · metrics 2.10.0
npm
89Excellenthealth index
JustinBeckwith/linkinator
Broken link checker that crawls websites and validates links. Find broken links, dead links, and invalid URLs in websites, documentation, and local files. Perfect for SEO audits and CI/CD.
TypeScript★ 1,269↓ 691.2K/moOct 3, 2026
MITOct 3, 2026 · metrics 2.10.0
npm
88Excellenthealth index
mightyiam/eslint-config-love
A TypeScript ESLint config that loves you
TypeScript★ 818↓ 423.1K/moSep 12, 2026
MITSep 12, 2026 · metrics 2.10.0
npm
86Excellenthealth index
RSeidelsohn/license-checker-rseidelsohn
Extract NPM package licenses. Enhanced and updated fork of Dav Glass' original (but abandoned) license-checker.
TypeScript★ 201↓ 1.8M/moSep 10, 2026
BSD-3-ClauseSep 10, 2026 · metrics 2.10.0
npm
86Excellenthealth index
w3c/echidna
New publication workflow at W3C — main component
HTML · JavaScript★ 45Sep 13, 2026
MITSep 13, 2026 · metrics 2.10.0
npm
83Excellenthealth index
xojs/xo
❤️ JavaScript/TypeScript linter (ESLint wrapper) with great defaults
TypeScript★ 7,993↓ 629.3K/moAug 28, 2026
MITAug 28, 2026 · metrics 2.10.0
PyPI
81Excellenthealth index
adrienverge/yamllint
A linter for YAML files.
Python★ 3,455Sep 9, 2026
GPL-3.0Sep 9, 2026 · metrics 2.10.0
npm · Maven
81Excellenthealth index
eclipse-scout/scout.rt
No repository description published.
Java · TypeScript★ 45↓ 1,177/moSep 8, 2026
EPL-2.0Sep 8, 2026 · metrics 2.10.0
npm
81Excellenthealth index
tcort/markdown-link-check
checks all of the hyperlinks in a markdown text to determine if they are alive or dead
JavaScript★ 721↓ 740.6K/moOct 21, 2026
ISCOct 21, 2026 · metrics 2.10.0
npm
81Excellenthealth index
xojs/eslint-config-xo
ESLint shareable config for XO
JavaScript★ 284↓ 1.8M/moAug 27, 2026
MITAug 27, 2026 · metrics 2.10.0
Go
73Goodhealth index
preflightsh/preflight
Preflight is a Go-based CLI tool that scans a codebase and related configuration for launch readiness. It identifies missing configuration, integration issues with services, security hygiene concerns, SEO metadata gaps, and other common mistakes that affect production deploys.
Go★ 59Sep 12, 2026
MITSep 12, 2026 · metrics 2.10.0
Packagist
73Goodhealth index
shipmonk-rnd/phpstan-rules
📏 Various extra strict PHPStan rules we found useful in ShipMonk.
PHP★ 155↓ 463.8K/moSep 10, 2026
MITSep 10, 2026 · metrics 2.10.0
Packagist
71Goodhealth index
nette/code-checker
✅ A simple tool to check source code against a set of Nette coding standards.
PHP★ 88↓ 15.1K/moOct 12, 2026
Custom licenseOct 12, 2026 · metrics 2.10.0
Go
71Goodhealth index
quyxishi/whitebox
whitebox is a Prometheus exporter that provides availability monitoring of external VPN services powered by VMESS, VLESS, TROJAN, WireGuard, AmneziaWG, Shadowsocks and Hysteria2.
Go★ 150Sep 17, 2026
MITSep 17, 2026 · metrics 2.10.0
PyPI
69Goodhealth index
3xp0rt/Naminter
A Python package and command-line interface (CLI) tool for asynchronous OSINT username enumeration using the WhatsMyName dataset
Python★ 47↓ 733/moSep 10, 2026
MITSep 10, 2026 · metrics 2.10.0
Packagist
67Goodhealth index
shipmonk-rnd/composer-dependency-analyser
🚀 Fast detection of composer dependency issues (unused dependencies, shadow dependencies, misplaced dependencies)
PHP★ 630↓ 1M/moSep 12, 2026
MITSep 12, 2026 · metrics 2.10.0
npm
65Goodhealth index
tcort/link-check
checks whether a hyperlink is alive (`200 OK`) or dead.
JavaScript★ 48↓ 792.5K/moOct 20, 2026
ISCOct 20, 2026 · metrics 2.10.0
npm
63Moderatehealth index
bizon/eslint-config-xo-bizon
ESLint shareable config to be used with xo or eslint-config-xo
TypeScript★ 2↓ 3,829/moSep 10, 2026
MITSep 10, 2026 · metrics 2.10.0
Go
63Moderatehealth index
fe3dback/go-arch-lint
GoLang architecture linter (checker) tool. Will check all project import path and compare with arch rules defined in yml file. Useful for hexagonal / onion / ddd / mvc and other architectural patterns. Tool can by used in your CI
Go★ 596Oct 18, 2026
MITOct 18, 2026 · metrics 2.10.0
npm
62Moderatehealth index
MetaMask/superstruct
A simple and composable way to validate data in JavaScript (and TypeScript). Forked by MetaMask to fix ESM compatibility.
TypeScript★ 3↓ 4.2M/moAug 27, 2026
MITAug 27, 2026 · metrics 2.10.0
Hex
62Moderatehealth index
Oeditus/oeditus_credo
Custom Credo checks for detecting common Elixir/Phoenix anti-patterns including N+1 queries, missing error handling, blocking operations, telemetry gaps, and more. Provides 20+ comprehensive static analysis checks to improve code quality.
Elixir★ 27↓ 7,803/moSep 9, 2026
MITSep 9, 2026 · metrics 2.10.0
npm
56Moderatehealth index
lizenz-tooling/checker
No repository description published.
TypeScript★ 6↓ 12.8K/moSep 28, 2026
BSD-3-ClauseSep 28, 2026 · metrics 2.10.0
Packagist
56Moderatehealth index
peckphp/peck
Peck is a powerful CLI tool designed to identify pure wording or spelling (grammar) mistakes in your codebase.
PHP★ 473↓ 71.8K/moOct 20, 2026
MITOct 20, 2026 · metrics 2.10.0
PyPI
54Moderatehealth index
mgedmin/check-manifest
Tool to check the completeness of MANIFEST.in for Python packages
Python★ 293↓ 688.2K/moSep 10, 2026
MITSep 10, 2026 · metrics 2.10.0