Cognitience logo Cognitience

Office software that
belongs to you.

Cognitience is a suite of open-source, local-first apps — a word processor, a spreadsheet, and a presentation tool. Your files stay on your machine. Your formats stay open. No accounts, no subscriptions, no telemetry.

Download for Windows or Mac View the source

Downloads

Free forever, MIT-licensed portable builds. Pick Windows or Mac — nothing to install, nothing to sign up for.

Cognitience WP icon

Cognitience WP v2.0.0

A clean, focused word processor. Write without a toolbar shouting at you.

  • Documents stored as open JSON on your disk
  • Rich fonts, colors, highlight, lists, links, print
  • Dark / light liquid-glass chrome
Windows .exe Mac Apple Silicon Mac Intel
Cognitience SS icon

Cognitience SS v2.0.0

A spreadsheet that respects your data — and opens the files you already have.

  • Opens .xlsx, .csv/.tsv, and .parquet directly
  • Exports to xlsx, csv, tsv, and open JSON
  • Formula bar with SUM, arithmetic, cell refs
Windows .exe Mac Apple Silicon Mac Intel
Cognitience PP icon

Cognitience PP v1.0.0

Presentations without the cloud chrome. Just you and the canvas.

  • Opens and displays .pdf, .png, and .pptx
  • Insert images, PDF pages, video, and audio
  • Title slides, text boxes, full type control
Windows .exe Mac Apple Silicon Mac Intel

Open by default. Local by design.

The big suites rent you your own documents. Cognitience hands them back.

Open source, MIT licensed

Every line is on GitHub. Audit it, fork it, learn from it, ship it. The license doesn't change when the business model does — because there isn't one.

Nothing leaves your machine

Each app runs its backend on localhost and saves to your own folders. No upload queues, no sync conflicts, no "recovered versions" on someone else's server. Airplane mode is a feature, not a punishment.

Open formats, no lock-in

Documents are plain JSON you can read with any text editor, and the apps open the world's files too — xlsx, csv, parquet, pdf, png, pptx. Leave whenever you want; your work comes with you.

Fast, because it's yours

A Rust backend and zero round-trips mean saves are instant and the UI never waits on a network. Your computer is fast — your software should act like it.

No accounts, no telemetry

There is no sign-in screen because there is nothing to sign in to. We can't sell your data; we never see it. Download, run, done.

Yours to keep, forever

A portable .exe and files on your disk means Cognitience keeps working even if we disappear. No subscription to lapse, no server to shut down, no rug to pull.

“The best cloud is no cloud. Your words, your numbers, your slides — on your disk, under your control, in formats anyone can read.”
— The Cognitience principle