Top Simple Calendar Alternatives for Enhanced Organization
Simple Calendar, a highly regarded open-source application, offers a straightforward way to manage events with optional CalDAV sync, recurring events, and customizable widgets. It prides itself on being ad-free and respecting user privacy, requiring minimal permissions. However, as excellent as Simple Calendar is, users often seek different features, wider platform compatibility, or more advanced functionalities. This guide explores the best Simple Calendar alternatives to help you find the perfect fit for your scheduling needs.
Top Simple Calendar Alternatives
Whether you're looking for cross-platform solutions, enhanced security, or more robust features, these alternatives offer diverse options to manage your schedule effectively.

Google Calendar
Google Calendar is a multi-platform powerhouse that offers more than just event scheduling. It's a free web-based, Android, iPhone, Chrome OS, and iPad compatible tool with features like Material design, data export/import, IFTTT integration, shared calendars, and sync across devices. If you're deeply integrated into the Google ecosystem and need a robust, feature-rich calendar that works everywhere, Google Calendar is an excellent alternative to Simple Calendar, especially for its extensive sharing and integration capabilities.

Lightning Calendar
Lightning Calendar is a free and open-source option that integrates directly with Thunderbird or Seamonkey email clients on Mac, Windows, and Linux. For users who prefer managing their calendar within their email application and value open-source solutions, Lightning Calendar provides seamless CalDAV and CardDAV support along with task management features, making it a compelling alternative for desktop users seeking integration.

Calendar Lock PEA
Calendar Lock PEA stands out for its strong emphasis on privacy and security. This free, open-source calendar for Mac, Windows, and Linux encrypts your iCalendars on the device, displaying them in plaintext only in RAM. If privacy, authenticated encryption, and secure note-taking are paramount concerns, Calendar Lock PEA offers a robust, privacy-focused alternative to Simple Calendar, ensuring your sensitive schedule details remain protected.

Etar
Etar is a free, open-source Android and Android Tablet calendar application designed with a simple, material design. Like Simple Calendar, it's ad-free and lightweight, making it an excellent choice for users who appreciate a clean interface and open-source principles. Its month, week, day, and agenda views, combined with optional GPS location tracking, make it a strong contender for Android users seeking a straightforward yet customizable calendar.

Rainlendar
Rainlendar is a freemium, cross-platform calendar (Mac, Windows, Linux) known for its rich features and minimal desktop footprint. It's highly customizable and can sync with various services, including Fantastical and Google Calendar. If you desire a desktop-centric calendar that offers extensive customization and synchronization options beyond Simple Calendar's scope, Rainlendar provides a versatile solution.

Apple Calendar
For users deeply embedded in the Apple ecosystem, Apple Calendar is a free and seamlessly integrated solution for Mac, iPhone, iPad, and iCloud. It allows for the creation of separate calendars for different aspects of life (home, work, school) and syncs effortlessly with iCloud. If you own Apple devices and need a native, well-integrated calendar experience, Apple Calendar is a natural and efficient alternative to Simple Calendar.

Microsoft Mail and Calendar
Built into Windows 10, Microsoft Mail and Calendar offers a free, integrated experience for Windows and Windows S users. This bundled solution provides email tracking, background operation, and task management features alongside its calendar functionality. If you're a Windows user seeking a native, pre-installed calendar with email integration, this is a convenient alternative to Simple Calendar.

Calendly
Calendly is a freemium web and iPhone tool primarily focused on scheduling. It connects with up to six of your existing calendars to automate appointment booking, making it ideal for professionals and businesses. While not a direct calendar replacement like Simple Calendar, it's a powerful alternative for those whose primary need is efficient online scheduling, booking, and collaboration with clients or colleagues.

MineTime
MineTime is a free, modern, and multi-platform calendar application available on Mac, Windows, and Linux. It connects to various calendar providers, including Google Calendar and Microsoft Exchange, and boasts features like AI-powered scheduling and a personal assistant. If you need a smart calendar that integrates with multiple services and offers intelligent scheduling capabilities beyond what Simple Calendar provides, MineTime is a strong contender.

Kontact
Kontact is the integrated Personal Information Manager of KDE, a free and open-source suite available on Windows and Linux. It unifies various KDE PIM applications, offering features like contacts management, email-to-task conversion, and a feed reader alongside its calendar. For users on Linux or Windows who prefer a comprehensive, open-source PIM suite with integrated calendar functionality, Kontact provides a robust alternative to Simple Calendar.
Choosing the right calendar application depends on your specific needs, whether it's cross-platform compatibility, advanced scheduling features, robust privacy, or seamless integration with other services. Explore these Simple Calendar alternatives to find the best fit for your organizational style and daily workflow.