# mesop-dev/mesop

Rapidly build AI apps in Python

Repository: https://github.com/mesop-dev/mesop
Canonical: https://ross.abutalabs.com/products/mesop
Homepage: https://mesop-dev.github.io/mesop/
Language: Python
License: Apache-2.0
License Family: permissive
Last push: 2026-08-17T20:34:37+00:00

## Health v2 (maintenance only)
Score: 93/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 98, release rhythm 98, longevity 75
- inputs: {"age_days": 1055, "days_push": 16, "days_rel": 16, "gap_med": 18.0, "n_releases_24m": 25}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 6588, forks 345 (observed 2026-08-28T04:09:45.491132+00:00)

## What it is
Mesop is a Python-based UI framework for rapidly building web apps like demos and internal tools without writing JavaScript, CSS, or HTML. It uses a declarative, reactive component model in idiomatic Python and ships with ready-made components for AI chat and text-to-text apps.

## Use cases
- build a web UI in pure Python
- create an AI chat app quickly
- prototype internal tools and demos
- build streaming LLM response interfaces
- make a web app without learning JavaScript
- rapidly spin up demo apps for ML models

## When to choose
- you're a Python developer who wants web UIs without frontend skills
- you need quick demos or internal apps, especially for AI/LLM features
- you want hot reload, type safety, and composable Python components

## When to avoid
- you need a highly customized public-facing production frontend
- you require fine-grained control over JavaScript, CSS, or mobile-native behavior
- your team already has strong frontend expertise and a JS stack

## Facets
- artifact type: framework
- maturity: active
- function: web-framework, frontend-framework, ui-components, state-management, chatbot
- domain: web-development, frontend, artificial-intelligence, chatbots, developer-tools
- platform: python, cross-platform
- tags: python-ui, ai-apps, no-javascript, reactive-ui, hot-reload, internal-tools, streaming-ui, web-server

## Member repositories
- mesop-dev/mesop (main) score 93

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:45.491132+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:43:34.817251+00:00, confidence not recorded.
  - readme: https://github.com/mesop-dev/mesop (fetched 2026-08-28T04:09:45.491132+00:00, sha 4076a4aec946)
  - homepage: https://mesop-dev.github.io/mesop/ (fetched 2026-08-29T08:40:00.944369+00:00, sha 54fd5528cef3)
  - registry_pypi: https://pypi.org/pypi/mesop/json (fetched 2026-08-29T08:40:00.953375+00:00, sha bbee5ee83d26)
- Data as of 2026-08-30T08:39:29.467469+00:00.