Software · AI chatbots & assistants

Cognate

Cognate is a local-first, privacy-focused day planner. It auto-schedules tasks as time blocks, re-flows on disruption, syncs E2E encrypted via CRDTs, and runs AI locally. Your data never leaves your device.

Completely free
Windows, macOS and Linux
Open source
No account

Official website

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Geographic availability: No geographic restriction found in our sources; availability is not checked country by country.

Technical details

Pricing: Completely freeconfirmed by GitHub
License: GPL-3.0 — Open source (copyleft)confirmed by GitHub
Open source: Yes
Commercial use: Yesconfirmed by GitHub
Account required: Noconfirmed by GitHub
Credit card required: Noconfirmed by GitHub
Watermark: Not applicable
Ads: not documented
Platforms: Windows, macOS and LinuxEstablished by Linux: GitHub · macOS: GitHub · Windows: GitHub
Publisher: adityatawde9699
Latest activity: 2 November 2026
Source code: github.com/adityatawde9699/Cognate

Overview

Features described in its GitHub repository and on its official website: offline use, scheduled tasks, reminders and due dates.

Overview written by LicitPro from the documentation published by the authors and the cited sources; we have not tried the resource ourselves.

Excerpts that establish this information

“Cognate is a local-first planner that turns tasks and calendar busy time into a time-blocked day.” — official website, 10 November 2026
“It auto-schedules tasks as time blocks, re-flows on disruption, syncs E2E encrypted via CRDTs, and runs AI locally.” — GitHub, 10 November 2026
“Keep your reminders.” — official website, 10 November 2026

At a glance

Cognate is completely free: it is open source software, and every feature is available without paying or subscribing.

Its licence (GPL-3.0) is a copyleft open source licence: you may use, study, modify and redistribute it, including commercially; modified versions must keep the same licence.

Strengths

Open source code
No account needed
Commercial use allowed

Sources and checks

Facts collected from GitHub (credit card, account, source code, publisher, licence, free status, platforms, commercial use) — 8 November 2026
Last technical check: 7 November 2026
Description from github.com — Dépôt GitHub adityatawde9699/Cognate (GPL-3.0-only)

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