
Fantastical
Fantastical is a flexible calendar with natural language event creation, a beautiful calendar and event list, support for CalDAV (including Google Calendar delegates) automatic alarms, and instant searching.
Organize your schedule and events in a calendar fully integrated with Thunderbird or Seamonkey email. .
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.
lightning brings the sunbird (sunbird is discontinued) calendar to the popular email client, mozilla thunderbird and the seamonkey internet application suite. since its an extension, lightning is tightly integrated with thunderbird or seamonkey, allowing it to easily perform emailrelated calendaring tasks.
task-management calendar caldav carddav seamonkey-extension thunderbird-extension