[opensourcedex]

best-of ranking · updated nightly

Best Open Source Office Suites Tools

Ranked by GitHub stars — actual adoption, not editorial taste. All 10 are free, open source and self-hostable; license and last activity on every entry.

  1. 1
    wordcraft ★ 17K

    An open-source, clean-room reimplementation of Microsoft Word in pure Rust

    Apache-2.0 Rust pushed 2026-11-02 details →
  2. 2
    CryptPad ★ 8.0K

    Secure collaboration with end-to-end encryption

    AGPL-3.0 JavaScript pushed 2026-11-02 details →
  3. 3
    gspread ★ 7.5K

    Google Sheets Python API

    MIT Python pushed 2026-07-30 details →
  4. 4
    ONLYOFFICE Docs ★ 7.1K

    Complete office suite for documents, spreadsheets & more

    AGPL-3.0 Shell pushed 2026-10-26 details →
  5. 5
    gridcraft ★ 7.0K

    GridCraft: an open-source, clean-room spreadsheet (Microsoft Excel-style) in pure Rust. By ArtCraft.

    Apache-2.0 Rust pushed 2026-11-02 details →
  6. 6
    bento ★ 5.6K

    Bento, the office suite that fits in a file

    MIT TypeScript pushed 2026-11-02 details →
  7. 7
    LibreOffice ★ 4.6K

    Free office suite with Microsoft compatibility

    GPL-3.0 C++ pushed 2026-11-02 details →
  8. 8
    deckcraft ★ 4.5K

    Presentations and slide shows: an open-source, clean-room reimplementation of Microsoft PowerPoint in pure Rust. Part of the ArtCraft Crafting Apps.

    Apache-2.0 Rust pushed 2026-11-02 details →
  9. 9
    KillerPDF ★ 4.3K

    Free and open-source PDF editor for Windows with a built-in PDF 2.0 engine. View, annotate, OCR, merge, split, crop, rotate, compare, edit text, draw, sign, fil

    GPL-3.0 C# pushed 2026-11-02 details →
  10. 10
    IronCalc ★ 4.2K

    A spreadsheet engine you can embed, self-host, or run in the browser

    Apache-2.0 Rust pushed 2026-11-02 details →
method stars desc · snapshot from github api refresh nightly related Input & Dictation, Email & Communication, Password & Secret Management, Design & Visualization, Time & Task Management, System Cleanup & Optimization

Related best-of lists

best Input & Dictation →best Email & Communication →best Password & Secret Management →best Design & Visualization →best Time & Task Management →best System Cleanup & Optimization →

last updated nightly · ranking method: github stars, live-tracked

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Frequently asked questions

What is the best open source Office Suites tool in 2026?

wordcraft leads the ranking with 17,038 GitHub stars, ahead of CryptPad. Rankings use live GitHub star counts, refreshed nightly.

How is this list of Office Suites tools ranked?

By GitHub stars — a proxy for adoption and community size. Each entry also shows its licence, primary language and last commit date, so you can judge maintenance activity rather than trusting the ranking alone.

Are the best Office Suites tools free?

Every project on this list is open source and free to self-host. Some also offer paid managed hosting, but the software itself carries no licence fee.