Scheduling & CalendarsAcuity Scheduling (Squarespace)
Acuity Scheduling (Squarespace)
Online Booking, Payment Processing, Staff Scheduling REST API Target Users: Service Industry, Gyms, Salons needing Complete Booking Management Features.
★New
Paid
Scheduling & Calendars APIs
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AllAccounting, Invoicing & Finance27AI & Data50Analytics, Tagging & Attribution26Auth, Identity & KYC27Content, Media & Files25CRM & Sales26Documents, PDFs & eSignature36eCommerce & Marketplaces33Financial Markets & Trading30Internationalization & Compliance30Maps, Geolocation & Places38Marketing, Email & Push23Observability, Errors & Replay21Payments & Billing18Realtime, Messaging & Comms34Scheduling & Calendars33Search, Recommendations & Personalization81Shipping, Fulfillment & Tracking39Support, Chat & Feedback24AI6DevTools4Finance4Maps & Geolocation2Analytics2Identity Verification2Communication & Messaging1Payments & Finance1AI & Machine Learning1Headless CMS / Content Management1Headless CMS & Content API1Auth1Security & Compliance1Enterprise APIs & CRM1Storage & File Management1Content Infrastructure & File Management1Content Management & AI1Headless CMS / Content API1AI/DevTools1Fintech/Compliance1
Scheduling & CalendarsCal.com
Cal.com
Open Source Scheduling Infrastructure, Self-hosted Options REST API Target Users: Developers seeking Highly Customizable, Open Source or Self-hosted Scheduling Solutions.
★New
Paid
Scheduling & CalendarsGoogle Calendar API
Read/Write Events, Manage Calendars, Free/Busy Status
REST API Target Users: Integrating Google Ecosystem, Applications needing direct manipulation of Google Calendar Data.
Scheduling & CalendarsProductivityScheduling+1
★New
Paid
Scheduling & CalendarsAcuity Scheduling (Squarespace)
Online Booking, Payments, Staff Scheduling
REST API Target Users: Service Industry, Gyms, Salons needing Complete Booking Management Features.
Scheduling & CalendarsProductivityScheduling+1
★New
Paid
Scheduling & CalendarsCal.com
Open Source Scheduling Infrastructure, Self-hosted
REST API Target Users: Developers seeking Highly Customizable, Open Source or Self-hosted Scheduling Solutions.
Scheduling & CalendarsProductivityScheduling+1
★New
Paid
Scheduling & CalendarsFullCalendar
FullCalendar
Interactive Calendar Interface, Drag & Drop Events JavaScript Library (Non-traditional REST API) Target Users: Web Frontend Developers, Needing Highly Customizable In-browser Calendar Display.
★New
Paid
Scheduling & CalendarsCalendly API
Booking Pages, Scheduling Links, Event Management
REST API, Webhooks Target Users: Integrating Booking Flows into CRM/Sales Tools, Custom Booking Experiences.
Scheduling & CalendarsProductivityScheduling+1
★New
Paid
Scheduling & CalendarsMicrosoft Graph (Outlook Calendar)
Access Outlook/Exchange Calendars, Mail, Contacts (M365)
REST API Target Users: Deeply Integrated Microsoft 365 Enterprise Environment, Applications needing Unified Access to M365 Data.
Scheduling & CalendarsFinanceTrading+4
★New
Paid
Scheduling & CalendarsSimplyBook.me
Global Booking System, Multi-language Support
REST API Target Users: Multinational, Multi-location Service Enterprise Booking.
Scheduling & CalendarsProductivityScheduling+1
★New
Paid
Scheduling & CalendarsSimplyBook.me
SimplyBook.me
Global Booking System, Multi-language Support REST API Target Users: Multinational, Multi-location Service Enterprise Booking.
★New
Paid
Scheduling & CalendarsNylas
Unified Calendar API (Google, Outlook, Exchange, Apple)
Unified REST API Target Users: Developers, SaaS Companies, Seeking Single API to Integrate All Major Calendar Platforms.
Scheduling & CalendarsFinanceTrading+4
★New
Paid
Scheduling & CalendarsOnSched
OnSched
Enterprise Booking API (Emphasizing HIPAA Compliance) REST API Target Users: Scheduling for Healthcare, Finance, and other High-compliance Industries.
★New
Paid
Scheduling & CalendarsGoogle Calendar API
Google Calendar API
Read/Write Events, Manage Calendars, Get Free/Busy Status REST API Target Users: Integrating Google Ecosystem, Applications needing direct manipulation of Google Calendar Data.
★New
Paid
Scheduling & Calendarstimekit
timekit
Complex Scheduling Logic, Real-time Availability Calculation REST API Target Users: Booking Systems needing High Flexibility and Complex Business Rules (e.g., Healthcare, Consultants).
★New
Paid
Scheduling & CalendarsCalendly API
Calendly API
Booking Pages, Scheduling Links, Event Management REST API, Webhooks Target Users: Integrating Booking Flows into CRM/Sales Tools, Custom Booking Experiences.
★New
Paid
Scheduling & CalendarsCronofy
Cronofy
Enterprise Calendar Sync & Scheduling Unified REST API Target Users: Enterprise Apps, Scheduling Services needing High Reliability, Real-time Multi-calendar Sync.
★New
Paid
Scheduling & CalendarsNylas
Nylas
Unified Calendar API (Google, Outlook, Exchange, Apple) Unified REST API Target Users: Developers, SaaS Companies, Seeking Single API to Integrate All Major Calendar Platforms.
★New
Paid
Scheduling & CalendarsMicrosoft Graph (Outlook Calendar)
Microsoft Graph (Outlook Calendar)
Access Outlook/Exchange Calendars, Mail, Contacts, etc. M365 Resources REST API Target Users: Deeply Integrated Microsoft 365 Enterprise Environment, Applications needing Unified Access to M365 Data.
★New
Paid
Scheduling & Calendarstimekit
Complex Scheduling Logic, Real-time Availability
REST API Target Users: Booking Systems needing High Flexibility and Complex Business Rules (e.g., Healthcare, Consultants).
Scheduling & CalendarsProductivityScheduling+1
★New
Paid
Scheduling & CalendarsFullCalendar
Interactive Calendar Interface, Drag & Drop Events
JavaScript Library (Non-traditional REST API) Target Users: Web Frontend Developers, Needing Highly Customizable In-browser Calendar Display.
Scheduling & CalendarsProductivityScheduling+1
★New
Paid
Scheduling & CalendarsOnSched
Enterprise Scheduling API (HIPAA Compliant)
REST API Target Users: Scheduling for Healthcare, Finance, and other High-compliance Industries.
Scheduling & CalendarsProductivityScheduling+1
★New
Paid
Scheduling & CalendarsCronofy
Enterprise Calendar Sync & Scheduling
Unified REST API Target Users: Enterprise Apps, Scheduling Services needing High Reliability, Real-time Multi-calendar Sync.
Scheduling & CalendarsProductivityScheduling+1
★New
Paid