Best Calendar Tools to Use in 2026
Discover the best free and open-source calendar tools. Curated list with alternatives and reviews.
Top Picks
caldays
Public holidays for 195+ countries
Calendarific
Worldwide Holidays
Checkiday - National Holiday
Industry-leading holiday data with over 5,000 holidays and thousands of descriptions
Church Calendar
Catholic liturgical calendar
Czech Namedays Calendar
Lookup for a name and returns nameday date
Festivo Public Holidays
Fastest and most advanced public holiday and observance service on the market
More Great Options
Google Calendar
Display, create and modify Google calendar events
Hebrew Calendar
Convert between Gregorian and Hebrew, fetch Shabbat and Holiday times, etc
Holidays
Historical data regarding holidays
LectServe
Protestant liturgical calendar
Nager.Date
Public holidays for more than 90 countries
Namedays Calendar
Provides namedays for multiple countries
FAQ
Are these tools really free?
Yes! All tools listed on Craftisle are 100% free or have a generous free tier.
How do you choose the best tools?
We evaluate based on features, ease of use, community support, and update frequency.