📄 Free Office and Document Software

Office and document software often comes with compatibility pain, export limits, ads or subscriptions. This category collects free tools for office documents, PDFs, ebooks, references and reading workflows.

16 tools

Free

draw.io

Flowcharts and architecture diagrams — no account, no diagram limits

Open Source
No Ads
No Tracking
Offline

Free

Freeplane

Mind maps should not be a monthly subscription, or capped by node count

Open Source
No Ads
No Tracking
Offline

Free

KOReader

Install it on a Kindle or e-ink device and take the reader back

Open Source
No Ads
No Tracking
Offline

Free

Pandoc

The universal translator between document formats

Open Source
No Ads
No Tracking
Offline

Free

PDFsam Basic

Split and merge PDFs without uploading them to a website

Open Source
No Ads
No Tracking
Offline

Free

Thorium Reader

Reading EPUB on a desktop, with the most serious accessibility work in the field

Open Source
No Ads
No Tracking
Offline

Free

Typst

A typesetting system ten times easier than LaTeX, compiling in milliseconds

Open Source
No Ads
Offline
No Sign-up

Free

Xournal++

Handwrite on a PDF the way you would on paper

Open Source
No Ads
No Tracking
Offline

Free

Calibre

All-in-one e-book management and conversion

Open Source
No Ads
No Tracking
Offline

Free

LibreOffice

A complete office suite, Office-compatible, free forever

Open Source
No Ads
No Tracking
Offline

Free

Mozilla Thunderbird

The veteran free email client that puts privacy first

Open Source
No Ads
No Tracking
No Sign-up

Free

Okular

The universal document viewer from KDE

Open Source
No Ads
No Tracking
Offline

Free

ONLYOFFICE Desktop Editors

A free office suite with outstanding format compatibility

Open Source
No Ads
No Tracking
Offline

✦ Ours

Free

SoloPDF

A local-first PDF reader — your highlights become notes

Open Source
No Ads
No Tracking
Offline

Free tier

Stirling-PDF

A self-hosted all-in-one PDF toolbox

Open Source
No Ads
No Tracking
No Sign-up

Free

Sumatra PDF

An ultra-lightweight PDF reader for Windows

Open Source
No Ads
No Tracking
Offline