Flask by pallets
The Python micro framework for building web applications.
About Flask
From the project's README at github.com/pallets/flask. Lightly cleaned for readability; for the full source see the upstream repo.
Flask is a lightweight [WSGI] web application framework. It is designed to make getting started quick and easy, with the ability to scale up to complex applications. It began as a simple wrapper around [Werkzeug] and [Jinja], and has become one of the most popular Python web application frameworks.
Flask offers suggestions, but doesn't enforce any dependencies or project layout. It is up to the developer to choose the tools and libraries they want to use. There are many extensions provided by the community that make adding new functionality easy.
[WSGI]: https://wsgi.readthedocs.io/ [Werkzeug]: https://werkzeug.palletsprojects.com/ [Jinja]: https://jinja.palletsprojects.com/ A Simple Example Donate
The Pallets organization develops and supports Flask and the libraries it uses. In order to grow the community of contributors and users, and allow the maintainers to devote more time to the projects, [please donate today].
Health score breakdown
6-dimension composite. See methodology for formula and weights.
Adoption signals
Real-world usage data, pulled from each registry. The bigger the numbers, the more battle-tested the project.
| Signal | Value | Source |
|---|---|---|
| GitHub stars | 71k | github.com/pallets/flask |
| GitHub forks | 17k | github.com/pallets/flask |
| PYPI downloads (last month) | 207051k | flask |
Release & maintenance
Is this project actively maintained, or about to die? Check the recency of last commit and last release.
| Project age | 16.1 years | since Apr 2010 |
| Last commit | 5 days ago | May 2, 2026 |
| Releases shipped | 38 | last: 3 months ago |
| Security policy | SECURITY.md | declared by maintainers |
| Funding links | 4 | declared by maintainers |
Self-hosting cost across providers
Detected requirements: 4GB RAM, 40GB disk minimum. Cheapest plan per provider that meets the requirement.
| Provider | Plan | Specs | Monthly | |
|---|---|---|---|---|
| hetzner | CAX11 | 2c · 4GB · 40GB | $4.13 USD | Deploy → |
| vultr | VC2 | 1c · 1GB · 25GB | $5 USD | Deploy → |
| linode | Nanode 1GB | 1c · 1GB · 25GB | $5.12 USD | Deploy → |
| digitalocean | Basic Regular 1GB | 1c · 1GB · 25GB | $6 USD | Deploy → |
Security advisories
CVE-2026-27205. What people say on Hacker News
Ready to self-host Flask?
Spin up a hetzner CAX11 (4GB RAM, 40GB disk) for $4.13/mo and follow the project's official install docs.
Data last refreshed May 7, 2026.
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