Danish circular annual-planner (Plandisc, Højbjerg, 2012), Visma-owned, hosted on Visma Private Cloud Sweden, ISAE 3000.
- FROM
- —
- CLOUD ACT
- MINOR
Calendar tool (formerly Cron) acquired by Notion (US) in 2022.
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Ordered by feature parity and migration friction, which is weighted higher than feature breadth.
Danish circular annual-planner (Plandisc, Højbjerg, 2012), Visma-owned, hosted on Visma Private Cloud Sweden, ISAE 3000.
US-incorporated open-source Calendly alternative (Cal.com Inc, SF) founded by EU developers; production code moving closed-source in 2026.
Nottingham UK developer-API-first calendar / scheduling platform (Cronofy, founded 2013), ISO 27001 + SOC 2; Wise / GoCardless / Indeed customers.
All 3 alternatives, benchmarked against Notion Calendar.
Danish circular annual-planner (Plandisc, Højbjerg, 2012), Visma-owned, hosted on Visma Private Cloud Sweden, ISAE 3000.
US-incorporated open-source Calendly alternative (Cal.com Inc, SF) founded by EU developers; production code moving closed-source in 2026.
Nottingham UK developer-API-first calendar / scheduling platform (Cronofy, founded 2013), ISO 27001 + SOC 2; Wise / GoCardless / Indeed customers.
| Product | Hosting | Sovereignty | Cert. | Pricing | Signals | Open |
|---|---|---|---|---|---|---|
|
Notion Calendar
benchmark · US
|
— |
US-LINKED | SOC 2 no EU framework |
Freemium |
E2E
Public DPA
Sub-processors
Open source
|
|
|
Danish circular annual-planner (Plandisc, Højbjerg, 2012), Visma-owned, hosted on Visma Private Cloud Sweden, ISAE 3000.
|
SE
Sweden
|
SOVEREIGNTY
A single roll-up of ownership and CLOUD Act exposure.
|
— | Paid |
Public DPA
Sub-processors
Open source
|
→ |
|
US-incorporated open-source Calendly alternative (Cal.com Inc, SF) founded by EU developers; production code moving closed-source in 2026.
|
US
United States
|
SOVEREIGNTY
A single roll-up of ownership and CLOUD Act exposure.
|
— | Freemium |
Public DPA
Sub-processors
Open source
|
→ |
|
Nottingham UK developer-API-first calendar / scheduling platform (Cronofy, founded 2013), ISO 27001 + SOC 2; Wise / GoCardless / Indeed customers.
|
—
United Kingdom
|
SOVEREIGNTY
A single roll-up of ownership and CLOUD Act exposure.
|
ISO/IEC 27001
SOC 2
|
Paid |
Public DPA
Sub-processors
Open source
|
→ |
Beyond compliance: how these alternatives compare on the capabilities you actually use day to day.
| Feature | Plandisc | Cal.com | Cronofy |
|---|---|---|---|
| Payment collection | Yes | ||
| White-label | Yes | Yes | |
| Workflow automation | No | ||
| Kanban boards | No | ||
| Gantt / timeline | No | ||
| Time tracking | No | ||
| Sprints / agile | No | ||
| Task dependencies | No | ||
| Guest / client access | Yes | ||
| Calendar sync | Yes | Yes | |
| Round-robin / team | Yes | Yes | |
| Group bookings | Yes | Yes | |
| Video integration | Yes | Yes | |
| Automated reminders | Yes | Yes | |
| Free tier | No | Yes | No |
Listed for transparency. Every product on this page is benchmarked against this baseline.
Listed for transparency. Every product on this page is benchmarked against this baseline.
Calendar tool (formerly Cron) acquired by Notion (US) in 2022.
For every product we read the public DPA, sub-processors document, hosting region declaration, and corporate ownership records. Each is timestamped. Signals are editorial, re-verified quarterly. We never accept self-attestation.
Reviewed by the EU Vetted editorial team · Editorial guidelines