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fruux is a cloud-based synchronization service designed for contacts, calendars, and tasks, offering users a seamless way to keep their data in sync across multiple devices. Launched in 2012, it supports various platforms and allows effortless sharing and collaboration on calendars and contacts. With a focus on privacy and data security, fruux enables users to manage their personal information conveniently while ensuring that their data remains safe and accessible whenever needed.

Kalendaro.online is an intuitive online calendar platform designed for managing personal and professional schedules. It offers features such as event creation, reminders, and the ability to share calendars with others. Users can customize their views and manage multiple calendars in one place. The platform emphasizes user-friendliness and accessibility, making it a convenient tool for individuals and teams to organize their time effectively.

kalender.digital is a modern online calendar service that emphasizes simplicity and ease of use for personal and professional scheduling. The platform provides features such as seamless event creation, sharing options, and synchronization with other calendar applications. Users can manage appointments, set reminders, and create collaborative calendars for teamwork. With a focus on digital solutions, kalender.digital aims to support efficient time management and enhance productivity.

Proton Calendar is a secure and private calendar application developed by the team behind ProtonMail. Launched in 2020, it is designed to protect user privacy by offering end-to-end encryption for all calendar events and metadata. With a user-friendly interface, Proton Calendar enables individuals to create and manage events, set reminders, and share calendars while keeping their data safe from unauthorized access. It is seamlessly integrated with ProtonMail, providing a holistic secure experience.