Open Source · CLI-first · CalDAV · MS365 · Git-native

Capture it. Forget nothing.

A fast, minimal todo tool for the command line. Text files in git today, with sync to Apple Reminders, Google Calendar, and Microsoft To Do on the way. Your data, your device, no cloud required.

jyn add
two jyn add commands: one for a work pull request review tagged work, one for calling Lisa tagged personal with high priority
jyn ls
jyn ls output showing three tasks with id, priority, due date, title, and tags columns

Your tasks, your device, your data

Git-backed and offline today. Sync to the apps you already use is on the way.

Quick Capture

One command, done. Due dates, tags, and priorities, with fast filtering and sorting.

jyn add "..." --prio high

Git-backed

Text files in your repo. Works offline, version-controlled, full data sovereignty. Found by walking up to the nearest .jyn, like git.

.jyn/items/*.yaml

CalDAV + MS365

Coming

Tasks will appear in Apple Reminders, Google Calendar, Thunderbird, or Microsoft To Do and Outlook. Every device, every ecosystem.

CalDAV + Graph API

Encryption

Coming

Mark sensitive tasks encrypted. Your key stays on your device, content stays unreadable to local AI tools.

encrypted

Recurring Tasks

Daily, weekly, monthly, custom intervals. Type it the way you say it; stored as iCalendar RRULE for sync.

--recur "every Mon"

Joy Integration

Coming

Joy creates Jyn todos from workflow events. Reviews, approvals, and AI tasks land directly in your list.

joy > jyn > CalDAV
joŷ

Joyint

Q3 2026

Want sync and Apple Reminders without manual git push? Joyint will connect Jyn to your devices with sync and CalDAV.

Join the waitlist

Add your first task

No account, no app, no setup. Just install and jyn. Born from real needs at Joydev, where we use it daily across safety-critical projects. Open-sourced so others can shape it with us.

curl -fsSL get.joyint.com/jyn | sh