# ruanyf/free-books

互联网上的免费书籍

Repository: https://github.com/ruanyf/free-books
Canonical: https://ross.abutalabs.com/products/free-books
License Family: other
Last push: 2024-03-28T03:59:19+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 2571, "days_push": 888, "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 15963, forks 2604 (observed 2026-08-28T04:11:14.562525+00:00)

## What it is
A curated list of free computer science and programming books available on the internet, maintained by ruanyf. It organizes links to free English and Chinese books across topics like web development, system administration, programming languages, databases, AI, and math.

## Use cases
- find free programming books to learn JavaScript
- looking for free Linux system administration books
- where can I read free AI and machine learning textbooks
- free database and SQL books online
- curated list of free computer science reading material
- free math theory books for programmers

## When to choose
- you want a curated, categorized index of free technical books
- you need both English and Chinese learning resources
- you want to discover freely and legally available books before buying

## When to avoid
- you need structured courses or interactive tutorials rather than book links
- you expect the list to be frequently updated with the newest releases
- you need a single downloadable archive rather than external links

## Facets
- artifact type: learning-resource
- maturity: maintenance
- function: documentation, developer-tools
- domain: education, developer-tools, programming-languages, web-development, tutorials
- platform: cross-platform
- tags: awesome-list, free-books, curated-list, computer-science, chinese

## Member repositories
- ruanyf/free-books (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:14.562525+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 2026-08-29T17:05:18.599253+00:00, confidence not recorded.
  - readme: https://github.com/ruanyf/free-books (fetched 2026-08-28T04:11:14.562525+00:00, sha b6b6d14e261f)
- Data as of 2026-08-30T08:39:29.467469+00:00.