Browse free open source Calendar software and projects below. Use the toggles on the left to filter open source Calendar software by OS, license, language, programming language, and project status.

  • Real Time Accounts Payable Automation. Icon
    Real Time Accounts Payable Automation.

    Invoice capture and automation seamlessly integrated with your accounting software

    Yooz provides the smartest, most powerful, and easiest-to-use cloud-based E-invoicing and Purchase-to-Pay automation solution. It delivers unmatched savings, speed, and security with affordable zero-risk subscriptions to more than 5,000 customers and 300,000 users worldwide.
  • Free CRM Software With Something for Everyone Icon
    Free CRM Software With Something for Everyone

    216,000+ customers in over 135 countries grow their businesses with HubSpot

    Think CRM software is just about contact management? Think again. HubSpot CRM has free tools for everyone on your team, and it’s 100% free. Here’s how our free CRM solution makes your job easier.
  • 1
    qOrganizer is a general organizer that includes a calendar with schedule,reminders,journal/notes for every day, to-do list.But provides features useful for students such as:timetable and a booklet for marks and absences.It's designed to be easy to use.
    Leader badge
    Downloads: 6 This Week
    Last Update:
    See Project
  • 2
    Lifeograph

    Lifeograph

    private digital diary & note taking appliaciton

    Lifeograph is a diary program to take personal notes on life. It has all essential functionality expected in a diary program and strives to have a clean and streamlined user interface.
    Leader badge
    Downloads: 23 This Week
    Last Update:
    See Project
  • 3
    openCRX - Enterprise Class CRM

    openCRX - Enterprise Class CRM

    professional CRM and groupware service, ready for the cloud

    openCRX moved to https://github.com/opencrx
    Downloads: 4 This Week
    Last Update:
    See Project
  • 4
    BRIM is a MVC framework, written in PHP and based on items with a hierarchical relationship. The list of plugins make BRIM a Information Manager with plugins like bookmarks, a calendar, contacts tasks, notes, RSS etc. The application is multilingual.
    Downloads: 1 This Week
    Last Update:
    See Project
  • Find out just how much your login box can do for your customer | Auth0 Icon
    Find out just how much your login box can do for your customer | Auth0

    With over 53 social login options, you can fast-track the signup and login experience for users.

    From improving customer experience through seamless sign-on to making MFA as easy as a click of a button – your login box must find the right balance between user convenience, privacy and security.
  • Previous
  • You're on page 1
  • Next