PyFlakes Alternatives

Apps similar to PyFlakes include Pyrefly, which is free and open source. Other options are ty, Ruff, PyLint and PyChecker. In total there are seven apps like PyFlakes for Mac, Windows and Linux.

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PyFlakes alternatives page was last updated Dec 24, 2025

Pyrefly
2 likes
Pyrefly is a type checker and language server for Python, which provides lightning-fast type checking along with IDE features such as code navigation, semantic highlighting, and code completion. It is available as a command-line tool and a VSCode extension.
Cost / License
Free
Open Source (MIT)
Origin
United States
Since
Since 2025
Platforms
Python
Visual Studio Code
Linux
Mac
Windows
BSD
P
Good alternative?Is Pyrefly a good alternative to PyFlakes?
ty
1 like
An extremely fast Python type checker and language server, written in Rust.
Cost / License
Free
Open Source (MIT)
Origin
United States
Since
Since 2025
Platforms
Mac
Linux
Windows
Docker
Python
P
Good alternative?Is ty a good alternative to PyFlakes?
Ruff
2 likes
An extremely fast Python linter, written in Rust.
13 Ruff alternatives
Cost / License
Free
Open Source (MIT)
Origin
United States
Since
Since 2023
Platforms
Mac
Windows
Linux
BSD
Python
United States
P
Good alternative?Is Ruff a good alternative to PyFlakes?
P
P
PyLint
5 likes
A Python source code analyzer which looks for programming errors, it helps to enforce a coding standard and to sniff for some code.
Cost / License
Free
Open Source
Since
Since 2015
Platforms
Mac
Windows
Linux
Python
P
P
Good alternative?Is PyLint a good alternative to PyFlakes?
P
P
PyChecker
1 like
PyChecker is a tool for finding bugs in Python source code. It finds problems that are typically caught by a compiler for less dynamic languages, like C and C++ and is similar to lint. Because of the dynamic nature of python, some warnings may be incorrect; however, spurious...
Cost / License
Free
Open Source
Since
Since 2016
Platforms
Mac
Windows
Linux
P
P
Good alternative?Is PyChecker a good alternative to PyFlakes?
Pyright
Like
Static type checker for Python.
Cost / License
Free
Open Source
Origin
United States
Since
Since 2019
Platforms
Mac
Windows
Linux
Python
P
Good alternative?Is Pyright a good alternative to PyFlakes?
F
F
flake8
Like
Flake8 is a wrapper around PyFlakes, pep8 and Ned Batchelder's McCabe script and displays the warnings in a per-file, merged output.
Cost / License
Free
Open Source
Since
Since 2016
Platforms
Mac
Windows
Linux
F
P
Good alternative?Is flake8 a good alternative to PyFlakes?