Calendar Startups funded by Y Combinator (YC) 2026

September 2026

Browse 3 of the top Calendar startups funded by Y Combinator.

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  • Vimcal
    Vimcal
    Y Combinator LogoS2018
    Active • 9 employees • New York City
    saas
    productivity
    scheduling
    calendar
  • Cron
    Cron
    Y Combinator LogoW2020
    Acquired • 3 employees • San Francisco
    Cron (acq. by Notion) is the next-generation calendar app for professionals and teams, making modern work more efficient and joyful. Our mission is to help spend time wisely through well-crafted software that streamlines workflows, integrates other productivity tools, and builds collaboration right into the core experience. In everything we do at Cron, we believe that time is our most precious resource.
    saas
    productivity
    calendar
  • Kiko
    Kiko
    Y Combinator LogoS2005
    Acquired0 • Boston
    Kiko is a web calendar for anyone who wants to keep and share a calendar online. Kiko excels at three main things: * Universal access: Kiko integrates with your mobile phone and AIM and lets you access your calendar from any computer. * Share your calendar: Invite anyone to events (not just other Kiko users!) Let others view your calendar with just a click. * As easy as paper - or maybe easier: Write "Pay gas bill every month" onto your calendar and watch Kiko do the Right Thing!
    calendar

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