Software Alternatives, Accelerators & Startups

Lightning Calendar

Organize your life โ€” itโ€™s about time!

๐Ÿšจ Lightning Calendar has been discontinued
๐Ÿ”Ž You can review its best alternatives below or view status details

Top 12 Open-Source Alternatives to Lightning Calendar

Lightning Calendar
Simple Calendar Calendar Lock PEA Nextcloud Calendar Compass Calendar App Tutanota gsimplecal iRedMail Mailspring Cal.com Calcurse

Summary

The top open-source alternatives to Lightning Calendar are Simple Calendar, Calendar Lock PEA, and Nextcloud Calendar. One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.
  1. A simple calendar with events (optional recurring and reminders), week numbers and a customizable...
    Pricing:
    • Open Source

    #Email #Appointments and Scheduling #Calendar 99 social mentions

  2. Calendar Lock PEA is an encrypted desktop calendar with a day, week and month view. The shown calendars are never stored unencrypted on your disk, but exist only in the RAM. Platform-independent, Open Source, no installation or registration required.
    Pricing:
    • Open Source
    • Free

    #Appointments and Scheduling #Calendar #Security & Privacy

  3. The Calendar app is a user interface for Nextcloud's CalDAV server.
    Pricing:
    • Open Source

    #Email #Appointments and Scheduling #Calendar 4 social mentions

  4. Calm calendar for productive people
    Pricing:
    • Open Source

    #Productivity #Calendar #Personal Productivity

  5. Get your encrypted mailbox for free.
    Pricing:
    • Open Source

    #Email #Enterprise Communication #Email Clients 181 social mentions

  6. gsimplecal is a lightweight calendar application written in C++ using GTK2.
    Pricing:
    • Open Source

    #Appointments and Scheduling #Calendar #Audio Recording

  7. A fully fledged, free email server solution, an open source project (GPL v2).
    Pricing:
    • Open Source

    #Email #Email Service Provider #Email Clients 3 social mentions

  8. Mailspring is a mail client for Mac, Windows and Linux.
    Pricing:
    • Open Source

    #Email #Calendar #Enterprise Communication 25 social mentions

  9. Cal.com (formerly Calendso) is the open source Calendly alternative.
    Pricing:
    • Open Source

    #Productivity #Appointments and Scheduling #Open Source 57 social mentions

  10. Calcurse is a calendar and scheduling application for the command line.
    Pricing:
    • Open Source

    #Calendar #Project Management #Task Management 9 social mentions

  11. FullCalendar is an open-source JavaScript event calendar.
    Pricing:
    • Open Source

    #Appointments and Scheduling #Calendar #Appointment Scheduling 15 social mentions

  12. Calendar app is an online calendar and team scheduling software for people like me and you. We make it easy to schedule appointments on your calendar.
    Pricing:
    • Open Source

    #Appointments and Scheduling #Calendar #Appointment Scheduling 2 social mentions

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Please use the Feedback button if you think any of the listed products shouldn't be regarded as open-source.

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