Deviare API Hook
Microsoft Research Detours
EasyHook
madCodeHook
Code Project
Mhook
Synced
Cal
Calendly
Clockwise
CalendarBridge
FreeBusy
Google Calendar
MeetBit.io
Synced is an Availability Intelligence platform that helps teams instantly identify the best time to meet across people, departments, and organizationsโwithout the endless back-and-forth of scheduling emails. By connecting calendars across Google and Outlook and integrating directly into Slack, Synced gives users real-time visibility into availability while respecting privacy through trusted contact controls. The result is faster coordination, fewer scheduling headaches, and more productive teams.
Deviare API Hook
SyncedMicrosoft Research Detours - Detours is a software package for re-routing Win32 APIs underneath applications.
Cal - What if your Google Calendar was designed to make you more productive?
EasyHook - The reinvention of Windows API Hooking
Calendly - Say goodbye to phone and email tag for finding the perfect meeting time with Calendly. It's 100% free, super easy to use and you'll love our customer service.
madCodeHook - "madCodeHook" offers everything you need to hook code (mostly APIs).
Clockwise - Time & attendance tracking with QuickBooks integration