SOGo is groupware server with a focus on scalability and open standards. It provides a rich AJAX-based Web interface and supports multiple native clients through the use of standard protocols.
Lacks available extensions or plugins, and extending functionality requires custom programming.
Management of content and data is relatively straight forward, but there may be a bit of a learning curve. Some programming experience may be required.
Has a smaller active community. Limited support is available either for free or as a paid service. Adequate documentation is available.
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