Drupal + Alfresco
The Drupal-Alfresco Integration project provides a mechanism to achieve the benefits of Alfresco and Drupal working together via a standards-compliant interface. Alfresco is the leading open source enterprise content management system. Drupal along with Alfresco form a solid combination of Website + Enterprise content management system.
Drupal and Civic CRM
This is one of the steps taken to elevate Drupal into an Enterprise solution, Drupal Civic CRM module interfaces with Drupal and Civic CRM which helps in collaborating them seamlessly, you can choose to use two different or a single database which fits your need.
Drupal + Project Management (Team Communication Tool)
Open Atrium is an open source platform which is built using Drupal, it helps to manage and track your projects, helps clients to post their updates and requirements and more over its a good fit as an internal team communication tool. It has default features loaded and can be customized further.
Looking for Power of Drupal + Performance + Scalability
Drupal indeed is equipped with better performance and scalability however high traffic sites always need an extra boost as Performance and Scalability is critical. One of the options we have is Drupal Pressflow, which is a distribution of Drupal and involves both Drupal 6 and Drupal 7 releases. Pressflow 7 and later seem to show significant improvements on Performance and Scalibility. Pressflow improvises on faster and optimized SQL queries, reverse proxy caching. In short this seems to be one of the new roadways for high traffic websites.
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