US-incorporated open-source Calendly alternative (Cal.com Inc, SF) founded by EU developers; production code moving closed-source in 2026.
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A single roll-up of ownership and CLOUD Act exposure.
Swiss group-scheduling pioneer (Doodle AG, Zurich, 2007), owned by TX Group (SIX-listed Swiss media holding); SOC 2 + GDPR + HIPAA.
Doodle, in the Calendar booking category, is a European service with Germany as its hosting location and at most minor, transient US exposure under the CLOUD Act.
Doodle AG (Zurich, Switzerland; founded 2007 as the original group-scheduling polling tool) is wholly owned by the TX Group, the Swiss publicly-listed media holding (SIX Swiss Exchange: CH0011178255, formerly Tamedia, completed 100% acquisition in January 2014). Compliance posture covers SOC 2, GDPR, CCPA, HIPAA, and Cyber Verify Level III; 127 employees (March 2026); 19-year operating history. Signal mix: Swiss legal entity under a Swiss-publicly-listed parent with no US-PE control, EU/CH adequacy for cross-border transfers, multi-framework compliance attestation (SOC 2, GDPR, CCPA, HIPAA, Cyber Verify Level III), and a public DPA at doodle.com/en/data-processing-addendum; CLOUD Act flag at minor pending vendor disclosure of the underlying hosting provider. No public sub-processors list found at audit.
How exposed customer data is to US authorities under the CLOUD Act (Clarifying Lawful Overseas Use of Data Act).
Where ultimate control over the operating company sits.
Doodle is the Swiss group-scheduling pioneer headquartered in Zurich, operated by Doodle AG and founded in 2007 as a no-account meeting-scheduling poll (the "Doodle poll" that became a generic verb in many European business contexts during the 2010s). The product has since expanded into a full meeting-scheduling + time-management platform (Doodle Time OS) competing directly with Calendly and Acuity but with a heritage of group-availability scheduling that the US incumbents historically lacked.
Ownership is unusually clean for a 19-year-old SaaS: in January 2014, Tamedia (the Swiss publishing giant since renamed and reorganised into the publicly-listed TX Group, SIX Swiss Exchange ticker CH0011178255) completed a 100% acquisition of Doodle, and the company has remained a fully-owned subsidiary inside the TX Group's portfolio. TX Group is widely-held on the Swiss public market with no US-PE controlling stake on the cap table; this gives Doodle a Swiss-publicly-listed corporate parent without the Cohere / Vista / KKR-style US-PE risk seen elsewhere on this directory. Compliance posture is enterprise-ready: SOC 2 compliant, GDPR + CCPA + HIPAA aligned, and Cyber Verify Level III attested. Headcount stood at 127 employees as of March 2026.
Pricing is freemium with paid Pro, Team, and Enterprise tiers; specific entry-tier EUR figures were not captured at audit (pricing page was JS-rendered and showed placeholders). Best fit: EU and Swiss SMBs and enterprises who want a group-scheduling tool with a Swiss-publicly-listed corporate counterparty, regulated industries needing HIPAA / SOC 2 attestation, and any procurement-grade buyer preferring the TX Group / Swiss-public-listed ownership architecture over US-VC-funded competitors (Calendly, Acuity). The underlying hosting provider is not publicly disclosed at audit, which is the procurement-question gap to close before signing.
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.
Brno-based Czech booking platform (Reservio s.r.o., ABUGO Group), 500k+ businesses, freemium with branded customer apps.