All European SaaS

Mailbox Org

Email Marketing

EU Based

Mailbox is a German privacy-focused email service offering secure webmail, online office tools, cloud storage, and video conferencing. It supports PGP encryption, custom domains, CalDAV/CardDAV, and IMAP/POP3 for personal and business users.

Vikunja is an open-source, self-hostable to-do and task management app with kanban boards, Gantt charts, subtasks, CalDAV integration, and multi-project views. It works across platforms and supports team collaboration with a clean, privacy-focused interface.

Nextcloud Calendar

Scheduling

EU Mentions

Nextcloud Calendar is an open-source CalDAV-based calendar app integrated into the Nextcloud platform. It allows users to manage personal and shared calendars, schedule events, and sync across devices while keeping data self-hosted.

Baikal

Infrastructure & Cloud

EU Based

Baïkal is a self-hosted CalDAV and CardDAV server for managing calendar and contact data. Built on PHP with SQLite or MySQL storage and powered by SabreDAV, it lets users sync calendars and contacts across devices without relying on third-party cloud services.

Net C

Email Marketing

EU Based

Mailo is a privacy-focused European email service offering mailbox, calendar, storage, and photo albums. It supports PGP encryption, IMAP/POP3, CalDAV/CardDAV, and provides plans for individuals, families, and businesses.