• AsciidoctorofficeActiveMIT2026-07-05Asciidoctor contributors — Fast text processor for the AsciiDoc markup language, turning plain-text documents into HTML, PDF, EPUB and man pages. A cornerstone of docs-as-code: documentation stored as versionable, future-proof plain text.
• calibreofficeActiveGPL-3.0-only2026-07-02Kovid Goyal & contributors — The complete e-book toolkit: library management, format conversion between dozens of e-book formats, device synchronisation, metadata editing and a content server. Kovid Goyal's project has become the indispensable tool for keeping personal digital libraries alive and portable.
• GNU TeXmacsofficeActiveGPL-3.0-or-later2026-07-05GNU Project / TeXmacs contributors — Scientific editing platform producing publication-quality documents with live mathematics, interfaces to computer algebra systems and structured editing — inspired by TeX and Emacs but sharing code with neither.
• GnuCashofficeActiveGPL-2.0-or-later2026-07-05GnuCash community — Double-entry accounting software for personal and small-business finance — accounts, invoices, reports and bank imports, maintained continuously since 1997. Financial records are exactly the kind of data that must outlive any vendor.
• LibreOfficeofficeActiveMPL-2.02026-07-02The Document Foundation — Full-featured free office suite — writer, spreadsheets, presentations, drawing, databases and math — and the home of the OpenDocument standard formats. Forked from OpenOffice.org in 2010 under The Document Foundation, it safeguards decades of documents from format lock-in.
• LyXofficeActiveGPL-2.0-or-later2026-07-05LyX Team — Document processor built on the WYSIWYM principle — "what you see is what you mean" — combining a friendly editing interface with LaTeX's typesetting rigour underneath. Theses and books have been written in it for three decades.
• OkularofficeActiveGPL-2.0-or-later2026-07-05KDE Community — KDE's universal document viewer for PDF, EPUB, DjVu, comics and more, with annotation, form filling and digital signatures — the first software ever awarded the Blue Angel eco-label for resource efficiency.
• PandocofficeActiveGPL-2.0-or-later2026-07-05John MacFarlane & contributors — The universal document converter, translating between dozens of markup and document formats — Markdown, LaTeX, DOCX, EPUB, HTML and more. Written in Haskell by philosopher John MacFarlane, it is the Rosetta stone of document preservation.
• TypstofficeActiveApache-2.02026-07-05Typst GmbH & contributors — Modern typesetting system compiling readable markup to print-quality PDF with instant preview — a fresh, fast alternative to LaTeX whose compiler is fully open source.
• zathuraofficeActiveZlib2026-07-05pwmt.org community — Minimal keyboard-driven document viewer for PDF, DjVu, PostScript and EPUB, with vim-style navigation and a plugin-based rendering backend. A small tool that does one thing precisely.