reflex
Web apps in pure Python.
Decision gist · record as of 2026-08-14
Yes, if you want to build web applications entirely in Python and are comfortable with a framework in Beta status. The low install friction, active maintenance, permissive license, and zero known vulnerabilities make it a reasonable choice for prototyping and internal tools. For production systems requiring long-term stability guarantees, verify that the framework's maturity and component ecosystem meet your needs.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python 3.10 or later; virtual environment strongly recommended to ensure the reflex CLI is available in PATH.
- Installation is low-friction; the package is pure Python and pulls in 26 runtime dependencies including web servers (granian, starlette), async utilities (python-socketio, httpx), and component libraries.
- Maintenance is active with a recent release (10 days old) and steady repository activity.
License · maintenance · safety
Apache-2.0 (permissive) — Licensed under Apache-2.0 (permissive), which allows commercial and private use with minimal restrictions—suitable for most production and proprietary projects.
last release 2026-08-04 (10 days) · last repo commit 2026-08-14 · 28,814 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 417,527 downloads/mo, #6,816 on PyPI
Alternatives
Verify before relying
# Install
pip install reflex
# Create and run a minimal app
import reflex as rx
class State(rx.State):
count: int = 0
def index():
return rx.vstack(rx.heading(State.count))
app = rx.App()
app.add_page(index)
# Then: reflex run- Performance characteristics and scalability limits for production workloads.
- Maturity of the component library and how it compares to established web frameworks.
- Learning curve and documentation depth for developers new to reactive state management.
What it is and what it does
Reflex is a full-stack web framework that lets you write both frontend and backend logic in pure Python, eliminating the need to learn JavaScript or manage separate frontend/backend codebases. It uses a reactive state model where UI components automatically update when state changes, similar to modern JavaScript frameworks but expressed entirely in Python. The framework compiles your Python code to a web application and serves it through Starlette and Granian, with real-time communication via WebSockets (python-socketio) for interactive features.
The package includes built-in component libraries (radix, recharts, plotly, markdown, and others) for common UI patterns, plus hosting and deployment tools. It targets developers who want to build interactive web applications without context-switching between languages, and supports modern Python versions (3.10 through 3.14). The framework is in active development with recent releases and a large community presence.
Use it for
- Build data dashboards and analytics UIs with reactive state tied to charts and tables.
- Create internal tools and admin panels where Python backend logic and UI live in one codebase.
- Prototype full-stack web applications quickly without writing JavaScript or managing API contracts.
- Deploy Python-based AI/ML applications as interactive web interfaces using event handlers.
- Build real-time collaborative apps using WebSocket-based state synchronization.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, if you want to build web applications entirely in Python and are comfortable with a framework in Beta status.
The low install friction, active maintenance, permissive license, and zero known vulnerabilities make it a reasonable choice for prototyping and internal tools. For production systems requiring long-term stability guarantees, verify that the framework's maturity and component ecosystem meet your needs.
Install
reflex on PyPI
Before you install
Installation is low-friction; the package is pure Python and pulls in 26 runtime dependencies including web servers (granian, starlette), async utilities (python-socketio, httpx), and component libraries. Maintenance is active with a recent release (10 days old) and steady repository activity.
Requires Python 3.10 or later; virtual environment strongly recommended to ensure the reflex CLI is available in PATH.
License in practice
Licensed under Apache-2.0 (permissive), which allows commercial and private use with minimal restrictions—suitable for most production and proprietary projects.
Quickstart
# Install
pip install reflex
# Create and run a minimal app
import reflex as rx
class State(rx.State):
count: int = 0
def index():
return rx.vstack(rx.heading(State.count))
app = rx.App()
app.add_page(index)
# Then: reflex runVerify before relying
- Performance characteristics and scalability limits for production workloads.
- Maturity of the component library and how it compares to established web frameworks.
- Learning curve and documentation depth for developers new to reactive state management.
Package facts
| License | Apache-2.0 permissive |
| Python support | Supports the current Python release <4.0,>=3.10 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 26 packagesclickgranianhttpxpackagingpsutilpython-multipartpython-socketioredisreflex-basereflex-components-codereflex-components-corereflex-components-dataeditorreflex-components-gridjsreflex-components-lucidereflex-components-markdownreflex-components-momentreflex-components-plotlyreflex-components-radixreflex-components-react-playerreflex-components-rechartsreflex-components-sonnerreflex-hosting-clirichstarlettetyping-extensionswrapt |
| Maintenance | Actively maintained 10 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 417,527 / month, #6,816 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 4 - BetaLicense :: OSI Approved :: Apache Software LicenseProgramming Language :: Python :: 3Programming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.14 |
Evidence: reflex-0.9.8-py3-none-any.whl
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See also reflex-components-core · reflex-hosting-cli · flet-web · prefab-ui · reflex-components-gridjs · flet · reflex-components-code · reflex-components-lucide · reflex-components-moment · reflex-components-recharts