Top Alternatives to BusyCal

Google Calendar is a robust, cloud-based scheduling and time management platform developed by Google. It allows users to create and manage events, set up reminders, share calendars with others, and sync seamlessly across devices, making it an essential tool for personal, academic, and professional organization.

Microsoft Outlook is a comprehensive personal information manager designed for managing email, contacts, calendars, and tasks.

Lightning is a comprehensive calendar and task management add-on for Mozilla Thunderbird and Seamonkey, designed to integrate seamlessly with email. It offers robust features for scheduling, task tracking, and synchronization with various online calendar services, enhancing productivity directly within your email client.

Apple Calendar is a personal calendar application developed by Apple Inc., designed to seamlessly integrate with your Apple ecosystem whether you are on macOS or iOS. It allows you to manage your schedule, appointments, and events efficiently, synchronizing across all your devices.

Fantastical is a powerful and intuitive calendar and task management application designed for macOS, iOS, and watchOS. Known for its natural language processing engine and elegant interface, it simplifies scheduling and staying organized across all your Apple devices.

Calvetica is a highly-regarded calendar and time management application designed specifically for iPhone and iPad, praised for its speed and intuitive user interface to quickly create, view, and manage events.

aCalendar is a feature-rich calendar and task management application designed for users who need robust synchronization, detailed event management, and a user-friendly interface.