Top Alternatives to Lightning

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.

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.

Rainlendar is a highly customizable calendar application for Windows, macOS, and Linux. It seamlessly integrates with popular online calendars like Google Calendar and Fantastical, offering comprehensive event and task management directly on your desktop.

EssentialPIM is a versatile personal information manager designed to help you organize your life. It allows you to manage appointments, tasks, notes, contacts, passwords, and more, all within a single, customizable application available for desktop and mobile platforms.

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.

Etar is a free and open-source material design calendar application for Android, prioritizing privacy and a clean user experience. It focuses on core calendar functionalities like event management and reminders, offering data export/import and syncing capabilities without ads or excessive features.

VueMinder Calendar is a comprehensive calendar and task management application for Windows, designed to help users organize their schedules and boost productivity. It offers a wide range of features including robust synchronization options, customizable views, and advanced reminder capabilities, making it suitable for both personal and professional use.

Microsoft Calendar, part of the Outlook suite, is a robust online calendaring platform designed for scheduling, organization, and collaboration. It allows users to manage appointments, events, and tasks effectively, integrate with other services, and share schedules with others.

Microsoft Mail and Calendar is the default email and calendar client included with Windows, providing integrated tools to manage your communications and schedule.

Osmo is a lightweight and versatile personal organizer designed for efficiency. It integrates essential modules like a color calendar, task manager, address book, and notes editor into a single, user-friendly interface, making it ideal for managing daily activities.

BusyCal is a powerful desktop calendar application for Mac, designed to enhance productivity and organization. It offers a robust set of features for managing events, tasks, and reminders, with seamless integration across various calendar services like iCloud, Google Calendar, and Exchange.

KOrganizer is a comprehensive calendar and scheduling application, part of the integrated KDE Kontact suite. It provides robust tools for managing events, tasks, and deadlines, with extensive connectivity options and customization.