# anvil-works/anvil-runtime

The runtime engine for hosting Anvil web apps

Repository: https://github.com/anvil-works/anvil-runtime
Canonical: https://ross.abutalabs.com/products/anvil-runtime
Homepage: https://anvil.works/open-source
Language: TypeScript
License: NOASSERTION
License Family: other
Last push: 2026-06-24T11:22:24+00:00

## Health v2 (maintenance only)
Score: 72/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 89, release rhythm 35, longevity 100
- inputs: {"age_days": 2332, "days_push": 70, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1024, forks 133 (observed 2026-08-28T04:03:16.432218+00:00)

## What it is
The open-source runtime engine and standalone App Server that powers Anvil, a framework for building full-stack web apps entirely in Python. It serves Anvil apps from the local filesystem with a built-in Postgres database, HTTPS via Let's Encrypt, and a reverse proxy, without requiring the Anvil cloud service.

## Use cases
- build full-stack web apps with nothing but Python
- host Anvil apps on my own server instead of the cloud
- run a Python web app with a built-in database and no configuration
- serve an Anvil app from a Raspberry Pi or local machine
- run web apps behind a corporate firewall or offline
- connect Jupyter notebooks or local scripts to a web app via the Uplink
- self-host a web app with automatic HTTPS certificates

## When to choose
- you want to build full-stack web apps in Python without writing JavaScript, HTML, or CSS
- you need to self-host Anvil apps on your own infrastructure, including air-gapped or on-premise environments
- you want a zero-configuration app server with bundled database, reverse proxy, and HTTPS
- you already build apps in the Anvil editor and want to deploy them outside Anvil's cloud

## When to avoid
- you need a conventional framework with fine-grained control over frontend code, routing, or JavaScript interop
- you want to avoid vendor-specific conventions and prefer mainstream stacks like Django, Flask, or React
- you need a lightweight microservice or API-only backend without a UI framework
- you require a permissively licensed dependency - the license is non-standard (NOASSERTION)

## Facets
- artifact type: framework
- maturity: active
- function: web-framework, http-server, ui-components, database, deployment, self-hosted
- domain: web-development, self-hosted, developer-tools
- platform: python, cross-platform, self-hosted
- tags: full-stack-python, app-server, no-javascript, drag-and-drop-ui, uplink, postgres, lets-encrypt, low-code, full-stack, python, web-server, docker

## Member repositories
- anvil-works/anvil-runtime (main) score 72

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:16.432218+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 2026-08-30T07:08:07.742008+00:00, confidence not recorded.
  - readme: https://github.com/anvil-works/anvil-runtime (fetched 2026-08-28T04:03:16.432218+00:00, sha 1ab628badd61)
  - homepage: https://anvil.works/open-source (fetched 2026-08-29T13:08:45.978890+00:00, sha f3ad74ced3c5)
  - site_page: https://anvil.works/docs?l=header-nav (fetched 2026-08-29T13:08:45.995989+00:00, sha 509410c3e646)
  - site_page: https://anvil.works/features?l=solutions-menu (fetched 2026-08-29T13:08:45.988240+00:00, sha eb0f441160dd)
  - site_page: https://anvil.works/docs/overview/free-vs-paid (fetched 2026-08-29T13:08:45.993780+00:00, sha 6bddec90b2a8)
  - site_page: https://anvil.works/docs?l=resources-menu (fetched 2026-08-29T13:08:45.997919+00:00, sha 509410c3e646)
  - site_page: https://anvil.works/docs?l=mobile-menu (fetched 2026-08-29T13:08:46.001332+00:00, sha 509410c3e646)
  - site_page: https://anvil.works/features?l=mobile-solutions-menu (fetched 2026-08-29T13:08:46.002842+00:00, sha eb0f441160dd)
  - site_page: https://anvil.works/pricing?l=header-nav (fetched 2026-08-29T13:08:45.990714+00:00, sha ddd9631ce7f2)
  - site_page: https://anvil.works/pricing?l=mobile-menu (fetched 2026-08-29T13:08:45.999785+00:00, sha ddd9631ce7f2)
- Data as of 2026-08-30T08:39:29.467469+00:00.