HiPER Calc Pro play.google.com ↗

Free42 Productivity

A free re-implementation of the HP-42S RPN calculator.

Qalculate! ↗Productivity

A multi-purpose desktop calculator with unit and currency conversion and symbolic math.

LibreOffice ↗Productivity

A free, open-source desktop office suite.

Jupyter Data & analytics

An open-source interactive notebook environment for code, data and visualization.

Anki Productivity

A spaced-repetition flashcard app.

Hex ↗Data & analytics

A collaborative data notebook and analytics platform.

Collabora Online ↗Productivity

An open-source online office suite based on LibreOffice.

Geometric algebra Learning & books

A mathematical framework unifying vectors, rotations and higher-dimensional quantities.

BentoPDF ↗

A browser-based, self-hostable PDF toolkit that processes files locally.

Free42

A free re-implementation of the HP-42S RPN calculator.

Grist

Spreadsheet-database hybrid for structured data and workflows.

La Suite numérique ↗

A suite of open-source collaboration tools sponsored by the French government.

LibreOffice ↗

A free, open-source desktop office suite.

Miniflux

A minimalist self-hosted RSS reader.

Notesnook

An end-to-end encrypted note-taking app.

Obsidian

A Markdown-based note-taking and knowledge management app.

Okular

KDE's universal document viewer.

OnlyOffice

Office suite with Microsoft-format compatibility and a ribbon-style interface.

Pandoc

A command-line universal document converter.

PrintFriendly ↗

A browser plugin and service that strips ads and clutter from web pages for printing or PDF export.