Calypso Alternatives

SOGo is groupware server with a focus on scalability and open standards.

Cal and CardDAV server

Stop chasing your clients for documents! Easily request files, documents, forms & signatures from your clients – set a due date and save hours as your requests are returned to you effortlessly.

Try for free paid Free Trial $17.99 / Monthly (Basic)

eMule is a free peer-to-peer file sharing application for Microsoft Windows.

DAViCal is a server for calendar sharing.

Lightweight CalDAV/CardDAV server on top of Git.

AgenDAV is an Open Source CalDAV Web application.

Reservation software for activity and tourism businesses. Low credit card processing rates, mobile friendly. Built for you.

Xola is an elegant and powerful online booking and distribution system. We help tour and activity providers reduce costs, grow revenue, and save time.

Shareaza is the most luxurious and sophisticated file sharing system you'll find.

CalendarServer is a standards-compliant server implementation of the CalDAV and CardDAV protocols, including iMIP and APNS.

Eventric is an professional tour management solution.

Quazaa is a cross platform multi-network peer-to-peer file-sharing client based on Shareaza which...

Tour operators in 73 countries use Rezdy's booking software to sell thousands of products in real-time on their website and through distribution channels.