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🎛️Reflex

ACTIVE FLATLINED

reflex-dev/reflex · homepage ↗

🕸️ Web apps in pure Python 🐍

⭐ Very popular: 29k stars, gaining about 24 a week

View on GitHub ↗

repo profile

vintage 2022 4 years old
delivery library
language Python
license Apache-2.0

momentum

total stars 29k
stars added last week +24
HN peak 254 pts 3y ago
weekly downloads 86k /wk · PyPI
used by 4k repos & packages
commits / week 16 steady · +5% vs prior mo
issues closed 65% ~5d to close, median
contributors 211 (+3 in 15d)
release cadence weekly
last activity yesterday

durability

backing VC-backed Reflex (YC W23)
openness permissive
bus factor 3 concentrated
top-author share 26% 6 mo

bus factor = how many people it takes to cover more than half the commits (6 months). 1 is a solo project; higher means the work is spread across a team. top-author share is the single busiest author's slice of those commits.

since we covered it

monthly average + 354/mo (+1%/mo) · + 4k total since PR#14

why it's a big deal

  • Full control: define UI and state in Python, including event handlers and routing.
  • Instant deploy: CLI tools for local dev and hosting via Reflex Cloud or custom infra.
  • Growing ecosystem: example apps, prebuilt components, and frequent updates.

under the hood

  • Built with FastAPI and Next.js under the hood, abstracted away for dev simplicity.
  • Ships with hot reload, form/state handling, and native support for async code.
  • Python package, installable via pip.

our take from PR#14, 2025-08-06

star history

PR#14 · 24k29k now Oct 2022Aug 2026
  1. PR#14 24k 2025-08-06
  2. now 29k + 4k since first covered

curve is sampled from GitHub's star history, plus our own daily readings since we covered it; the dashed stretch is before we first covered it, the solid line since. figures at coverage are the numbers we printed then (approx.), current count is live.

understory

Quietly building: more output than attention, for now.

+21 understory score output 74 · clout 53
Aug 2025 Jul 2026
  • output, commits & releases
  • clout, star velocity

output = commits & releases; clout = star velocity, both 0 to 100 monthly indices; the gap where output runs above clout is the understory. The understory →

covered in

  • PR#14 2025-08-06 on the radar

    Declarative Development Environments

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