CountdownsHQ API alternatives
12 other calendar APIs compared on authentication, HTTPS, CORS and documented endpoints.
| API | Auth | HTTPS | CORS | Endpoints |
|---|---|---|---|---|
| CountdownsHQ | No auth | Yes | Yes | — |
| Google Calendar | OAuth | Yes | Unknown | — |
| UK Bank Holidays | No auth | Yes | Unknown | — |
| Hebrew Calendar | No auth | No | Unknown | — |
| Non-Working Days | No auth | Yes | Yes | — |
| Holidays | API key | Yes | Unknown | — |
| Namedays Calendar | No auth | Yes | Yes | — |
| Non-Working Days | No auth | Yes | Unknown | — |
| Russian Calendar | No auth | Yes | No | — |
| Calendarific | API key | Yes | Unknown | — |
| caldays | No auth | Yes | Yes | — |
| Church Calendar | No auth | No | Unknown | — |
| Intellibook | No auth | Yes | Yes | — |
Google Calendar
CalendarDisplay, create and modify Google calendar events
UK Bank Holidays
CalendarBank holidays in England and Wales, Scotland and Northern Ireland
Hebrew Calendar
CalendarConvert between Gregorian and Hebrew, fetch Shabbat and Holiday times, etc
Non-Working Days
CalendarSimple REST API for checking working, non-working or short days for Russia, CIS, USA and other
Holidays
CalendarHistorical data regarding holidays
Namedays Calendar
CalendarProvides namedays for multiple countries
Non-Working Days
CalendarDatabase of ICS files for non working days
Russian Calendar
CalendarCheck if a date is a Russian holiday or not
Calendarific
CalendarExplore comprehensive holiday data worldwide with Calendarific. Access national holidays, local observances, and religious events with customizable API solutions for your needs.
caldays
CalendarPublic holidays for 195+ countries
Church Calendar
CalendarCatholic liturgical calendar
Intellibook
CalendarAppointment booking and availability API for salons and clinics