# apache/poi

Mirror of Apache POI gitbox. The Java API for Microsoft Documents.

Repository: https://github.com/apache/poi
Canonical: https://ross.abutalabs.com/products/apache-poi
Homepage: https://poi.apache.org/
Language: Java
License Family: other
Topics: poi, content, java, library, excel, ooxml, powerpoint, visio, word, apache, docx, office, ole2, pptx, xls, xlsx
Last push: 2026-08-24T19:09:06+00:00

## Health v2 (maintenance only)
Score: 77/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 35, longevity 100
- inputs: {"age_days": 6314, "days_push": 9, "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 2264, forks 842 (observed 2026-08-28T04:06:32.504523+00:00)

## What it is
Apache POI is a Java library for reading and writing Microsoft Office documents in both OLE2 binary formats (XLS, DOC, PPT) and Office Open XML formats (XLSX, DOCX, PPTX). It provides high-level usermodel APIs per application plus low-level components for the OLE2 filesystem, document properties, and OOXML packaging.

## Use cases
- read and write Excel spreadsheets from Java
- generate Word docx documents programmatically
- create PowerPoint presentations in Java
- extract text from Office documents for indexing
- parse Outlook msg and winmail.dat files
- convert legacy xls files to xlsx
- read Visio diagrams in Java

## When to choose
- you need full programmatic manipulation of Excel, Word, or PowerPoint files on the JVM
- you must support both legacy binary (OLE2) and modern OOXML formats
- you need text extraction from Office documents for search or processing pipelines

## When to avoid
- you only need to read simple CSV or plain-text data files
- you are not on the JVM and need a native or Python solution
- you need pixel-perfect rendering of Office documents rather than data access

## Facets
- artifact type: library
- maturity: stable
- function: parser, serialization, pdf, email
- domain: files, developer-tools, spreadsheets, pdf
- platform: jvm, cross-platform
- tags: microsoft-office, excel, ooxml, ole2, docx, xlsx, pptx, word, powerpoint, visio, outlook

## Member repositories
- apache/poi (main) score 77

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:32.504523+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 2026-08-30T02:42:26.136959+00:00, confidence not recorded.
  - readme: https://github.com/apache/poi (fetched 2026-08-28T04:06:32.504523+00:00, sha 1f9d37ebd59a)
  - homepage: https://poi.apache.org/ (fetched 2026-08-29T10:22:47.377094+00:00, sha bcabae474973)
  - site_page: https://poi.apache.org/apidocs/index.html (fetched 2026-08-29T10:22:47.390553+00:00, sha b8c393a3d082)
  - site_page: https://poi.apache.org/changes.html (fetched 2026-08-29T10:22:47.386494+00:00, sha 54f859c8b3e7)
  - site_page: https://poi.apache.org/help/faq.html (fetched 2026-08-29T10:22:47.392370+00:00, sha 768b6e25cbc5)
- Data as of 2026-08-30T08:39:29.467469+00:00.