# Open Sunsama

> Self-hostable daily planner with time blocking and an MCP server

Open Sunsama is a daily planner modeled on Sunsama: tasks are planned on a kanban board of days, dragged onto a calendar as time blocks and worked through in a focus mode with a timer. Its code is public on GitHub under a non-commercial license and can be self-hosted with Docker. A hosted MCP server and a REST API let AI assistants such as Claude and ChatGPT read and change the plan.

- **Category:** Daily Planner Apps
- **Made by:** Circo
- **Website:** https://opensunsama.com
- **Runs on:** Web, macOS, Windows, Linux
- **Facts last checked:** Oct 9, 2026

## Pricing

Open Sunsama has a free plan.

- **Pricing model:** Free plan
- **Free plan:** Free of charge for non-commercial use under its license: personal, educational, non-profit and non-commercial open-source use, plus evaluation. The site states no price for the hosted app.
- **Free trial:** None listed.

| Plan | Price | What you get |
| --- | --- | --- |
| Non-commercial use | $0 | The license provides the software free of charge for personal, educational, non-profit and non-commercial open-source use, and for evaluation. |
| Enterprise license | Custom | Required for commercial use, including for-profit companies running it in production. Requested by email; no price is published. |

Read from https://github.com/ShadowWalker2014/open-sunsama/blob/main/LICENSE on Oct 9, 2026. Prices change, so confirm with Open Sunsama before buying.

## Ways to pay less

- **Free for non-profit organizations** (Nonprofit): The license lists non-profit organization use among the permitted uses that are free of charge, while for-profit companies need an enterprise license. Source: https://github.com/ShadowWalker2014/open-sunsama/blob/main/LICENSE
- **Free for educational use** (Education): Educational use is one of the permitted non-commercial uses that the license provides free of charge. Source: https://github.com/ShadowWalker2014/open-sunsama/blob/main/LICENSE

## Key features

- **Kanban board of days:** Tasks sit on a board with a column per day and a backlog. Each task can carry a P0 to P3 priority, a time estimate, subtasks, rich-text notes and attachments.
- **Drag-and-drop time blocking:** Dragging a task onto the calendar creates a block linked to that task, and resizing the block sets its length. The calendar has day, 3-day, week and month views.
- **Calendar sync:** Events from Google Calendar, Outlook and iCloud appear next to tasks and time blocks, so a day is planned around existing meetings.
- **Focus mode and rollover:** Focus mode shows one task with a timer and records actual time against the estimate. Unfinished tasks roll over to the next day, and recurring tasks repeat on their own.
- **MCP server for AI agents:** A hosted MCP server with 24 tools lets Claude, ChatGPT, Cursor and other MCP clients read the schedule and create or move tasks and time blocks after an OAuth sign-in.
- **REST API and self-hosting:** A REST API with scoped API keys covers tasks, time blocks and ideas. The app can be run on your own server with Docker Compose, which starts PostgreSQL, Redis, the API and the web app.

## Good for

- People who want Sunsama-style daily planning with code they can read
- Planning a day through Claude, ChatGPT or another MCP client
- Individuals who want to self-host their planner with Docker

## Worth knowing

- The license is non-commercial: personal, educational and non-profit use is free, and for-profit companies need an enterprise license with no public price.
- There is no native phone app yet; on a phone it runs as a mobile web app in the browser.
- The desktop apps connect only to opensunsama.com, so a self-hosted install is used through the web app.
- Team workspaces, auto-scheduling and integrations with Linear, GitHub, Jira and Notion are unchecked roadmap items, not shipped features.

## Works with

Google Calendar, Outlook, iCloud, Claude, ChatGPT, Cursor, VS Code, Claude Code

**Tags:** Tasks, Time blocking, Calendar, Kanban boards, Open source, Self-hostable, Public API

## Alternatives

- [Sunsama](https://toolgpa.com/tools/sunsama): Daily planner with guided planning routines and calendar timeboxing. [Compare](https://toolgpa.com/compare/open-sunsama-vs-sunsama)
- [Akiflow](https://toolgpa.com/tools/akiflow): Time-blocking planner that pulls tasks from other apps into one inbox. [Compare](https://toolgpa.com/compare/akiflow-vs-open-sunsama)
- [Motion](https://toolgpa.com/tools/motion): AI work planner that auto-schedules tasks on your calendar. [Compare](https://toolgpa.com/compare/motion-vs-open-sunsama)
- [Super Productivity](https://toolgpa.com/tools/super-productivity): Free, open-source to-do app with time tracking and a Pomodoro timer. [Compare](https://toolgpa.com/compare/open-sunsama-vs-super-productivity)
- [Will Be Done](https://toolgpa.com/tools/will-be-done): Open-source weekly task planner that works offline and self-hosts. [Compare](https://toolgpa.com/compare/open-sunsama-vs-will-be-done)

## Sources

The prices, plans, platforms and features above were read from these pages on Oct 9, 2026:

- https://opensunsama.com/
- https://opensunsama.com/free-time-blocking-app
- https://github.com/ShadowWalker2014/open-sunsama
- https://github.com/ShadowWalker2014/open-sunsama/blob/main/LICENSE

Page: https://toolgpa.com/tools/open-sunsama
Listed by ToolGPA (toolgpa.com).