Sunsama alternatives: 3 open-source picks
Sunsama costs $22/mo — $264 a year. These 3 alternatives replace it for $0, led by Super Productivity, Cal.com and Vikunja. All 3 are open source. License, stars and last commit checked by hand on 2026-08-29. No trials, no crippled tiers.
A local task planner with timeboxes, focus mode and its own stopwatch; less glossy, less interested in your wallet.
licenseMIT
runson your machine
installUse the browser/PWA or install a packaged desktop or mobile build
dataTasks, projects, time records, and settings are local-first in browser or app storage; optional synchronization and backups use the user's chosen WebDAV or Dropbox account
setup✓ installs clean
the catch vs SunsamaSuper Productivity has timeboxes and focus tools but not Sunsama’s polished guided daily review, shutdown ritual, and external task aggregation.
facts verified 2026-08-10
Open scheduling infrastructure with booking pages, round-robin, routing forms, and app integrations
licenseAGPL-3.0 (+EE)
runsyour server
setupnot verified by us yet — check the repo README
facts verified 2026-08-29
Self-hosted to-do and task management with lists, gantt, and kanban views
licenseAGPL-3.0
runsyour server
setupnot verified by us yet — check the repo README
facts verified 2026-08-29
What each one is, in full: Cal.com · Vikunja
last updated 2026-08-29 · no votes, no pay-to-list · just what's real
the usual suspects · recommended everywhere, rejected here
Amplenote FreeUseful free tasks and notes, but external calendar sync is a Pro feature.
Ellie FreeCalendar integration and timebox mode are both behind the subscription.
Routine FreeThe free plan has tasks and calendars, but the daily time-blocking loop is paid.
how to choose a Sunsama alternative
Easiest to get running
Super Productivity — a one-click install, no server to maintain.
Most proven
Cal.com, with 37,000 GitHub stars — the largest community of the 3, which usually means more answers when something breaks.
Runs on your own machine, no server
Super Productivity — nothing to host, your data stays on your disk.
Works on your phone
Super Productivity has a mobile app on iOS and Android.
what you give up by leaving Sunsama
- integration breadth
- calendar two-way sync
- daily ritual design
- mobile apps
- analytics
- reliability
None of the picks above covers all of it. The full verdict says which gaps matter.
Sunsama alternatives at a glance
| tool | license | running it | platforms | stars | active |
|---|---|---|---|---|---|
| Super Productivity | MIT | one-click install | web, macos, windows, linux, ios, android | 21,156 | 2026-08 |
| Cal.com | AGPL-3.0 (+EE) | docker to self-host | self-hosted, web | 37,000 | 2026-08 |
| Vikunja | AGPL-3.0 | one-click install | self-hosted, web | 5,000 | 2026-08 |
why people still pay for Sunsama
They pay for a planning habit that survives across tools, not a new to-do list. If none of that applies to you, any pick above saves $264 a year.
questions about switching from Sunsama
Is there an open-source alternative to Sunsama?
Yes: Super Productivity, Cal.com, Vikunja. Every tool on this page is open source: no trials, no crippled tiers.
Can open source really replace Sunsama?
Our verdict is YES. Cal.com (37k stars), Super Productivity (21k stars), Vikunja (5k stars) are mature open-source replacements for Sunsama — self-host with docker and stop paying $22/mo. The full verdict, and what you give up by switching, is at caniopensourceit.online/sunsama.
What is the easiest open-source Sunsama alternative to set up?
Super Productivity — a one-click install, no server to maintain.
What is the most popular open-source Sunsama alternative?
By GitHub stars, Cal.com (37,000). Super Productivity is next with 21,156.
