JPNAS.NET / Digital Resources

📄 Office & Documents

Free and open-source software for documents, notes, references, e-books, and PDFs.

Open in the interactive Digital Resources

• LibreOffice

  libreoffice.org

  A complete office suite with word processor, spreadsheet, presentations, and database. A solid free alternative to Microsoft Office.

  • #OPEN-SOURCE
  • #OFFICE
  • #DOCUMENTS
  • #SPREADSHEET

• ONLYOFFICE Desktop Editors

  onlyoffice.com

  A free office suite with high compatibility with Microsoft Office formats and a modern ribbon interface.

  • #OPEN-SOURCE
  • #OFFICE
  • #DOCX
  • #COMPATIBILITY

• Joplin

  joplinapp.org

  A free note-taking and to-do application with Markdown, end-to-end encryption, and sync across devices.

  • #OPEN-SOURCE
  • #NOTES
  • #MARKDOWN
  • #SYNC

• Logseq

  logseq.com

  A privacy-first outliner and knowledge base that stores notes as plain Markdown files on your device.

  • #OPEN-SOURCE
  • #NOTES
  • #OUTLINER
  • #KNOWLEDGE-BASE

• Zotero

  zotero.org

  A free tool to collect, organize, cite, and share research and references, with browser integration.

  • #OPEN-SOURCE
  • #REFERENCES
  • #RESEARCH
  • #CITATIONS

• Calibre

  calibre-ebook.com

  A powerful e-book manager that organizes, converts, and syncs books to your e-reader.

  • #OPEN-SOURCE
  • #EBOOKS
  • #LIBRARY
  • #CONVERTER

• SumatraPDF

  sumatrapdfreader.org

  A very small and fast reader for PDF, EPUB, and comic book files on Windows.

  • #OPEN-SOURCE
  • #PDF
  • #READER
  • #LIGHTWEIGHT

• PDFsam Basic

  pdfsam.org

  A free tool to split, merge, rotate, and extract pages from PDF files.

  • #OPEN-SOURCE
  • #PDF
  • #MERGE
  • #SPLIT

• Obsidian

  obsidian.md

  A powerful Markdown note-taking app that links notes into a knowledge graph. Free to use, but not open source.

  • #FREE
  • #NOTES
  • #MARKDOWN
  • #KNOWLEDGE-BASE