The Best Nextcloud Calendar Alternatives for Seamless Scheduling
Nextcloud Calendar is a robust solution for managing your schedule, offering a user interface for Nextcloud's CalDAV server. It excels in syncing events across devices, integrating with other Nextcloud apps like Contacts, and even supporting WebCal for external calendars. However, specific needs, platform preferences, or feature desires might lead you to seek a Nextcloud Calendar alternative. This article explores top contenders that offer similar, or even enhanced, scheduling capabilities.
Top Nextcloud Calendar Alternatives
Whether you're looking for a free, open-source, or feature-rich option, there's a calendar alternative out there for you. Here are some of the best choices that stand out:

Google Calendar
Google Calendar is a widely popular, multi-platform calendar tool that allows you to organize events with images and map coordinates. It's a free service available on Web, Android, iPhone, Chrome OS, Android Tablet, iPad, Sunbird, and Chrome. Key features include Material design, data export/import, IFTTT integration, reminders, shared calendars, calendar integration, and seamless sync across devices, making it a powerful Nextcloud Calendar alternative for those in the Google ecosystem.

Lightning Calendar
Lightning Calendar is a free and open-source option that fully integrates with Thunderbird or SeaMonkey email clients, allowing users to organize their schedule and events directly within their email application. Available on Mac, Windows, and Linux, it supports CalDAV and CardDAV, and includes task management features, providing a robust Nextcloud Calendar alternative for desktop users seeking integration with their email client.

Etar
Etar is a free and open-source calendar designed for Android and Android Tablet users, emphasizing a simple, material design. It features month, week, day, and agenda views, and is lauded for being ad-free and lightweight. Its focus on simplicity and open-source development makes it an excellent Nextcloud Calendar alternative for Android users who value privacy and a clean interface.

Rainlendar
Rainlendar is a freemium, feature-rich calendar application that is easy to use and takes up minimal desktop space. It's platform-independent, available on Mac, Windows, and Linux. Key features include customizability, sync with Fantastical and Google Calendar, multiple languages, and syncing with various services, positioning it as a versatile Nextcloud Calendar alternative for users who prefer a desktop application.

Simple Calendar
Simple Calendar is a commercial, open-source Android and Android Tablet application that offers basic calendar functionalities with optional CalDAV synchronization. It supports creating recurring events, setting up reminders, and displaying week numbers. Its customizable nature, built-in calendar, and support for WebDAV make it a straightforward and efficient Nextcloud Calendar alternative for mobile users.

Calendar Lock PEA
Calendar Lock PEA is a free and open-source solution focused on security and privacy. Available on Mac, Windows, and Linux, it displays iCalendars in plaintext only in RAM, with all other data always encrypted on the device. Its use of authenticated encryption, privacy-focused design, and encrypted notes make it a compelling Nextcloud Calendar alternative for users prioritizing data security.

Greg
Greg is a commercial, privacy-friendly, simple, and powerful calendar app available on the Web. Designed for perfectionists, it offers planner functionalities, portability, and shared calendars. While a paid option, its focus on user privacy and streamlined experience makes it a worthy Nextcloud Calendar alternative for those seeking a premium web-based solution.

Dawn
Dawn is a commercial, elegantly minimal calendar designed for iPhone users, aiming to revolutionize organization. It integrates to-dos, reminders, and subtasks, providing a comprehensive solution for managing your day. Its minimalistic design and focus on task management make it a strong Nextcloud Calendar alternative for iPhone users looking for a clean and efficient scheduling app.

ProtonCalendar
ProtonCalendar is a freemium, secure calendar designed to be paired with the equally secure ProtonMail service, available on the Web. Its primary feature is reminders, offering a privacy-focused approach to scheduling. For users deeply concerned about their data privacy and already using Proton services, ProtonCalendar stands out as a top Nextcloud Calendar alternative.

Scriby
Scriby is a free web-based SaaS note-taking app designed for remote teams, but it also offers robust calendar integration. It supports collaborative writing, Google Calendar integration, shared calendars, real-time collaboration, and meeting notes, making it more than just a calendar. Its comprehensive features for team collaboration and integration capabilities make it a versatile Nextcloud Calendar alternative, especially for teams looking for an all-in-one solution.
Choosing the best Nextcloud Calendar alternative depends entirely on your specific requirements. Whether you prioritize security, open-source freedom, seamless integration with other services, or a minimalist design, there's an option that will fit your needs. Explore these alternatives to find the perfect scheduling tool that enhances your productivity and fits your digital lifestyle.