Microsoft Office Outlook
Commercial
Microsoft Outlook is a personal information manager from Microsoft.
Kontact
Open Source
Kontact is a personal information manager and groupware software suite developed by KDE. It supports calendars, contacts, notes, to-do lists, news, and email.
Microsoft Mail and Calendar apps help you stay up to date on your email, manage your schedule and stay in touch with people you care about the most.
Lightning
Open Source
Lightning App Builder is a point-and-click tool that makes it easy to create custom pages for Salesforce1 and Lightning Experience.
VueMinder Calendar
Freemium
VueMinder Calendar is a calendar app for Windows.
Compare Apple Calendar with alternatives
Compare Microsoft Office Outlook and Apple Calendar and decide which is most suitable for you.
Compare Lightning and Apple Calendar and decide which is most suitable for you.
Compare Kontact and Apple Calendar and decide which is most suitable for you.
Compare VueMinder Calendar and Apple Calendar and decide which is most suitable for you.
Compare Microsoft Mail and Calendar and Apple Calendar and decide which is most suitable for you.