wtplan is described as '(web terminal planner ) helps you manage a calendar. The calendar can be managed from a command line interface and/or a web interface. The calendar data is stored in a simple text file' and is an app in the OS & Utilities category. There are more than 50 alternatives to wtplan for a variety of platforms, including Online / Web-based, Windows, Android, Linux and iPhone. The best alternative is Google Calendar, which is free. Other great apps like wtplan are Lightning Calendar (Free, Open Source), Etar (Free, Open Source), Simple Calendar (Freemium, Open Source) and Rainlendar (Freemium).
With Google Calendar, its easy to keep track of all your lifes important events in one place. You can add events and send invitations effortlessly, share your schedule with friends and family, and search for events you might enjoy.
Organize your schedule and life’s important events in a calendar that’s fully integrated with your Thunderbird or Seamonkey email. Manage multiple calendars, create your daily to do list, invite friends to events, and subscribe to public calendars.
Why? I wanted a simple, material design, state of the art open source calendar that anyone can improve on. Features: - Month view. - Week, day & agenda view. - Uses Android calendar sync. Works with Google Calendar, Exchange, Etesync etc.
Rainlendar is a feature rich calendar application that is easy to use and doesn't take much space on your desktop. The application is platform independent so you can run it on all major operating systems: Windows, Linux and Mac OS X.
Kontact is the integrated Personal Information Manager of KDE. Kontact suite unites mature and proven KDE PIM applications under one roof. Thanks to the powerful KPart technology, existing applications are seamlessly integrated into one.
Morgen is a modern and multi-platform calendar application. It connects to several calendar providers (including Google Calendar, Microsoft Exchange, Outlook.com, iCloud) and provide advanced scheduling features powered by Artificial Intelligence.
TimeTune improves your daily routine and allows you do more things with your time. It provides statistics about your time and is totally customizable. It's the perfect complement for your calendar and ideal for those who want to get things done.