Compare DAViCal and Sunsama on pricing, features, platforms, and ratings — both Calendar tools, Free / Open Source vs subscription pricing to decide which…
At a Glance
DAViCal
Sunsama
Primary category
Calendar
Calendar
Rating
Not documented
Not documented
Pricing model
Free / Open Source
subscription
Starting price
Free
$17/month
Free plan
Yes
Not documented
Free trial
Not documented
Yes
Platforms
Not documented
Web, iOS, Android, Mac, Windows
Team collaboration
Not documented
Not documented
AI features
Not documented
Not documented
Public API
Yes
Not documented
Pricing Compared
Starting price reflects the lowest paid tier, not the full cost for every team size or usage level.
DAViCal
Open Source — Free N/A
Sunsama
Pro (annual) — $17/month Annual
Pro (monthly) — $22/month Monthly
Enterprise — Custom Custom
Pros & Cons
DAViCal
Pros
Completely free and open source under the GPLv2 license
Full control and ownership over calendar and contact data via self-hosting
Implements open CalDAV/CardDAV standards, ensuring broad client compatibility
Mature, long-standing project with a stable feature set for group calendaring
Cons
Requires manual setup and maintenance of a PHP and PostgreSQL server stack
Administrative interface is functional but visually dated compared to newer alternatives
No official commercial support channel; relies on community and third-party providers
Less actively developed than some newer self-hosted alternatives like Baikal or Nextcloud
Sunsama
Pros
Unifies tasks and calendar from many existing tools instead of requiring a full switch
Structured daily and weekly rituals encourage more intentional, realistic planning
Single, simple pricing tier with no confusing feature gating
Focus on individual workflow avoids the clutter of team-oriented project management tools
Cons
No permanent free plan, only a 14-day trial
No team or collaboration tier, so it does not replace shared project management tools
Small company size may mean slower feature development compared to larger competitors
Requires connecting several external accounts to get full value, adding setup time
Use Cases
DAViCal
Self-Hosted Organizational Calendaring — Running a private, self-hosted shared calendar and scheduling server for a small business or non-profit.
Privacy-Focused Calendar Hosting — Keeping calendar and contact data fully in-house to meet data-residency or privacy requirements.
Group Meeting Scheduling — Using free/busy lookups and shared calendar delegation to coordinate meetings across a team.
Sunsama
Daily focus planning — Knowledge workers use Sunsama each morning to choose a realistic set of tasks and time-block their day.
Cross-tool task consolidation — Users juggling Trello, Asana, Slack, and email pull everything into one daily view instead of checking each app separately.
Weekly reflection and planning — Users run a structured weekly review to assess progress and set intentions for the upcoming week.