Best Credo Alternatives in 2026
Taken from Linters, where Credo is listed too, in the same order.
- 1
8.0 Club scoreRuff
Ruff is a free Python linter and code formatter written in Rust.
- Free plan
- Windows · macOS · Linux · Web
- 2 7.9 Club score
JSHint
JSHint is a free, open-source, community-driven static analysis tool for JavaScript.
- Free plan
- Windows · macOS · Linux · Web
- 3 7.9 Club score
Flake8
- Free plan
- Open source
- Windows · macOS · Linux · API
- 4 7.9 Club score
SwiftLint
SwiftLint is a free, open-source tool that checks Swift code against style and convention rules generally accepted by the Swift community.
- Free plan
- Windows · macOS · Linux
- 5 7.9 Club score
PMD
PMD is a free static code analyzer that checks source code for programming flaws, including unused variables, empty catch blocks, and unnecessary object creation.
- Free plan
- Windows · macOS · Linux · Self-hosted
- 6 7.7 Club score
Hadolint
Hadolint is a free Dockerfile linter that checks files for errors and best practices.
- Free plan
- Windows · macOS · Linux · Web
- 7
7.7 Club scoreShellCheck
ShellCheck is a free static analysis tool that gives warnings and suggestions for Bash and sh scripts.
- Free plan
- Windows · macOS · Linux · Web
- 8 7.6 Club score
actionlint
actionlint is a static checker for GitHub Actions workflow files.
- Free plan
- Windows · macOS · Linux · Web
- 9
7.6 Club scoreBiome
Biome is a free toolchain for maintaining the health of web projects.
- Free plan
- Windows · macOS · Linux · Web
- 10 7.6 Club score
Clippy
- Free plan
- Windows · macOS · Linux
- 11
7.5 Club scoreAstral
Astral builds developer tools for Python, including Ruff, a linter, and uv, a package and project manager.
- Free plan
- Windows · macOS · Linux
- 12
7.5 Club scoreCppcheck
Cppcheck is a static analysis tool for C and C++ code that identifies bugs, undefined behavior, and dangerous coding constructs.
- Free plan
- Windows · macOS · Linux · Self-hosted
- 13 7.5 Club score
Luacheck
Luacheck is a free, open-source static analyzer and linter for Lua code.
- Free plan
- Windows · macOS · Linux · Self-hosted
- 14 7.5 Club score
PHPMD
PHPMD analyzes PHP source code to flag possible bugs, inefficient patterns, overly complex expressions, and unused parameters, methods, or properties.
- Free plan
- Windows · macOS · Linux · Self-hosted
- 15
7.5 Club scoreSQLFluff
SQLFluff is a free, open source SQL linter designed with ELT applications in mind.
- Free plan
- Windows · macOS · Linux · API
- 16 7.4 Club score
cpplint
cpplint is a free, open-source command-line checker for C and C++ files, using Google’s C++ style guide as its reference.
- Free plan
- Windows · macOS · Linux
- 17
7.4 Club scoreStylelint
- Free plan
- Windows · macOS · Linux · API
- 18
7.4 Club scoregolangci-lint
golangci-lint is a free runner for Go linters that runs them in parallel, uses caching, accepts YAML configuration, and includes over a hundred linters.
- Free plan
- Windows · macOS · Linux · Self-hosted
- 19 7.3 Club score
Oxc
Oxc is a free collection of JavaScript development tools written in Rust, available for Linux, macOS, and Windows.
- Free plan
- Windows · macOS · Linux
- 20 7.2 Club score
PassWeb
- Free plan
- Web · Self-hosted