Offers calendar synchronisation between Outlook and Google, including attendees and reminders. Completely free, no install necessary, works behind web proxies and actively developed.
United Kingdom
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SyncThemCalendars AlternativesCalendar Apps like SyncThemCalendars
SyncThemCalendars is described as 'Allows you to block time in one calendar based on events in another calendar' and is a Calendar app in the office & productivity category. There are more than 10 alternatives to SyncThemCalendars for a variety of platforms, including Web-based, SaaS, Windows, Mac and iPhone apps. The best SyncThemCalendars alternative is Outlook Google Calendar Sync, which is both free and Open Source. Other great apps like SyncThemCalendars are Keeper, OneCal, gSyncit and Spanning Sync.
Alternatives list
14 Keeper alternativesKeeper is an open-source calendar syncing tool that can be used to sync the blocks of time marked as "busy" on your personal, work, business and school calendars.
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OneCal is a productivity tool that aims to make calendar synchronization as easy as possible. It has a very intuitive UI, supports multi-way syncs, and is fully configurable (you can choose to sync event titles, descriptions, and participants, assign colors to clone events...
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gSyncit™ is a Microsoft Outlook add-in that allows for the synchronization of Outlook calendars, contacts, notes, and tasks with your Google account.
Cost / License
- Paid
- Proprietary
Platforms
- Windows
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Spanning Sync 3 is the one app that syncs both iCal with Google Calendar and Address Book with Google Contacts. It gives you even better control over how your information syncs, and is now up to 10x faster!
Cost / License
- Paid
- Proprietary
Platforms
- Mac
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GDPR-compliant two-way calendar sync across Google, Outlook / Microsoft 365, iCloud, CalDAV and German providers like GMX. You choose per sync what is shared: busy only, title and time, or full details. Connects to Claude and ChatGPT via MCP. German company, German servers, DPA available.
Cost / License
- Freemium
- Proprietary
Platforms
- Online
- Software as a Service (SaaS)
+3
OggSync’s mission is to keep mobile users in sync with the scheduling demands of a busy lifestyle, keeping all calendars in one manageable view! Whether it is a users’ Google or Outlook calendar, OggSync syncs to a users mobile phone quickly and automatically, allowing users see...
Cost / License
- Paid
- Proprietary
Platforms
- Windows
Calendar Family is a free, web-based calendar-sync service. It mirrors events in real time (webhook/push, not slow polling) across Google and Microsoft/Outlook, one-way or two-way, so you stop double-booking work and personal accounts.
Hetk syncs Google Calendar, Microsoft Outlook, and Apple iCloud in real time. Bi-directional sync, privacy controls that mask event details, and identity transformation.
Cost / License
- Paid
- Proprietary
Platforms
- Online
Sync Contacts, Calendar and Tasks automatically Across iPhone, Android, Outlook, Gmail and apps
Cost / License
- Paid
- Proprietary
Platforms
- iPhone
- iPad
- Software as a Service (SaaS)
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Canada
United States
Germany
EU
Romania
Estonia
