# HVML/PurC

The prime HVML interpreter for C Language.

Repository: https://github.com/HVML/PurC
Canonical: https://ross.abutalabs.com/products/purc
Language: C
License: LGPL-3.0
License Family: copyleft
Last push: 2026-03-07T03:41:57+00:00

## Health v2 (maintenance only)
Score: 64/100 (v2, computed 2026-09-03T02:39:23.370411+00:00)
- activity 71, release rhythm 35, longevity 100
- inputs: {"age_days": 1500, "days_push": 179, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1046, forks 56 (observed 2026-08-28T04:03:21.767219+00:00)

## What it is
PurC is the prime interpreter for HVML, a programmable markup (descriptive) programming language, implemented in C/C++. It is distributed both as an embeddable LGPLv3 C library for building your own HVML tooling and as the `purc` command-line tool for running HVML programs and apps on Linux and macOS (Windows support is in progress).

## Use cases
- run HVML programs and apps from the command line
- embed an HVML interpreter in a C or C++ application
- learn and experiment with the HVML programming language
- build cross-platform apps with a programmable markup language
- process and transform data using HVML scripts
- embed scripting languages like Python inside HVML programs

## When to choose
- You want to execute or evaluate HVML programs on Linux or macOS
- You need a reusable C library implementing the HVML Specification V1.0 and its predefined dynamic objects
- You want to experiment with markup-based programming as an alternative to JavaScript-centric app development

## When to avoid
- You need production Windows support today, which is still on the way
- You require a 1.0-stable interpreter, as PurC is at version 0.9.x
- You are looking for an HTML rendering engine or web browser toolkit rather than an HVML interpreter

## Facets
- artifact type: library
- maturity: active
- function: interpreter, programming-language, parser, cli
- domain: programming-languages, parsers, developer-tools, cross-platform
- platform: c, cpp, cli, cross-platform
- tags: hvml, programmable-markup-language, interpreter, embeddable-library, minigui-ecosystem, command-line-tool, data-driven-apps, linux, macos

## Member repositories
- HVML/PurC (main) score 64

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:21.767219+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 2026-08-30T07:01:54.779082+00:00, confidence not recorded.
  - readme: https://github.com/HVML/PurC (fetched 2026-08-28T04:03:21.767219+00:00, sha 7fed0911d09c)
- Data as of 2026-08-30T08:39:29.467469+00:00.