flake8
A Python style and quality analysis tool that unifies multiple linters
- Also known as
- flake8
What is flake8?
flake8 is an open-source Python linter that combines multiple style-checking tools to verify code compliance with PEP 8 and detect errors. It uses a plugin architecture for extensibility and is commonly integrated into development workflows and CI/CD pipelines.
flake8 pricing
We don't have flake8's full plan breakdown yet (its pricing page resisted automated reading). Here's what we could confirm. Always check live pricing for exact numbers.
What flake8 does
The capabilities that matter for code quality tools, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.
- Function
- Linter
- Language scope
- Single-language
- Implementation language
- Python
- Autofix
- ✗
- Config model
- Config file
- Custom rules
- ✓
- Deployment
- CLI-local
- Editor integration
- ✓
- CI / VCS gating
- ✓
- Code metrics
- ✓
- Incremental / monorepo aware
- -
- Open-source
- OSS
- Pricing model
- Free
Platform & deployment
Independently observed- CLI
- Self-hosted
Integrations (3)
Independently observed- pycodestyle
- pyflakes
- mccabe
flake8 FAQ
Common questions about flake8, answered from independent, dated evidence.
What is flake8?
flake8 is an open-source Python linter that combines multiple style-checking tools to verify code compliance with PEP 8 and detect errors. It uses a plugin architecture for extensibility and is commonly integrated into development workflows and CI/CD pipelines. It is indexed under Code Quality Tools.
Source: https://flake8.pycqa.org/
Is flake8 free to use?
flake8 is open source, so it can be self-hosted and used at no licence cost. It is released under the MIT licence. Pricing changes often, so verify at source before relying on it.
Source: https://flake8.pycqa.org/
What platforms does flake8 support?
flake8 supports a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.
Source: https://flake8.pycqa.org/
Can flake8 be self-hosted?
Yes. flake8 can be deployed self-hosted, so it does not have to run on the vendor's infrastructure.
Source: https://flake8.pycqa.org/
What does flake8 integrate with?
We have confirmed 3 integrations for flake8, including pycodestyle, pyflakes and mccabe. This is what we could verify from public sources, so the vendor may support others we have not indexed.
Source: https://flake8.pycqa.org/
Is flake8 open source?
Yes. flake8 is published under the MIT licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.
flake8 alternatives
Other code quality tools we track, ranked by the same independent score.
- PrettierA code formatter that automatically enforces consistent style across projectshigh · 79%
- StyleLintA tool for checking CSS code for errors and style inconsistenciesmedium · 72%
- ESLintStatic analysis tool that identifies and fixes issues in JavaScript codehigh · 78%
- Ruffmedium · 68%
- BlackAn opinionated Python code formatter that automatically reformats code to a consistent stylehigh · 79%
- BiomeA unified code formatter and linter for web developmentmedium · 67%
Compare flake8
Side by side against other code quality tools, attribute by attribute, with a source on every value.
The vioscaleAI score: one lens on the evidence
Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for flake8, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Package downloads | 90 | 0.17 | 15.6 | ✓ |
| Capabilities | 67 | 0.08 | 5.6 | ✓ |
| Development activity | 22 | 0.12 | 2.6 | ✓ |
| Security score | 46 | 0.05 | 2.4 | ✓ |
| Stars | 68 | 0.03 | 2.2 | ✓ |
| Integrations | 17 | 0.05 | 0.9 | ✓ |
| Dependent projects | 0 | 0.08 | 0.0 | - |
| Release cadence | 0 | 0.07 | 0.0 | - |
| Security posture | 0 | 0.09 | 0.0 | - |
| Developer Q&A activity | 0 | 0.08 | 0.0 | - |
Computed . Re-weight it by intent, or see the full method.
All data & sourcesshow ↓
Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.
Activity
| Attribute | Value | Evidence |
|---|---|---|
| Commits last 30d | 4 | mediumsource · 2026-09-10 · 65% |
Adoption
Content
| Attribute | Value | Evidence |
|---|---|---|
| Faq | 6 items | mediumsource · 2026-09-10 · 65% |
Features
| Attribute | Value | Evidence |
|---|---|---|
| Capabilities | Autofix: No · Metrics: Yes · Function: linter · Ci gating: Yes · Deployment: cli_local · Open source: oss | mediumsource · 2026-09-10 · 60% |
Integrations
| Attribute | Value | Evidence |
|---|---|---|
| Count | 3 | mediumsource · 2026-08-14 · 60% |
Language
| Attribute | Value | Evidence |
|---|---|---|
| Primary | Python | highsource · 2026-09-10 · 98% |
License
| Attribute | Value | Evidence |
|---|---|---|
| Spdx | MIT | highsource · 2026-09-10 · 90% |
Pricing
Security
| Attribute | Value | Evidence |
|---|---|---|
| Scorecard | 4.6 | highsource · 2026-09-10 · 90% |
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