Appointment scheduling/booking application that aims to be super-simple, and open source!

DayViewer is an online calendar planner and diary for teams and professionals - includes notes, tasks, contacts and journal.

Open source online booking system.

OrgBusiness Software is a software company focused on the development of time management programs that include:

Manage diary/note, schedule, todo, birthday, etc.

A universal Apple-platform calendar app. Written in SwiftUI.

Touch Calendar is a new way to view your calendar on a mobile phone, making browsing your calendar as easy as using Google Maps.

Calindori is a touch-friendly calendar application. It has been designed for mobile Linux devices but it can also run on desktop environments. Users of Calindori are able to check previous and future dates and manage tasks and events.

WebCalendar is a PHP-based calendar application that can be configured as a single-user calendar, a multi-user calendar for groups of users, or as an event calendar viewable by visitors.

California is a calendar built for GNOME 3. It allows you to view and manage your online calendars with a simple and modern interface.

30 Boxes is an online calendering tool.

Small and medium scale businesses wish to provide online service booking, but tools out there are either too expensive or too complex. Timegrid is a platform holding contractors and customers for letting them an affordable and easy to use way to interact through online...