These systems do not have the level of features or breath of functionality yet that the proprietary products offer. Within this group there are only three major players, any of which would require a major change in all computing services and functions above the physical layer. Andrews is just large enough that we might be able to use it effectively but we are on the edge of being to small for what it is designed to do. The newest player in this arena, based on NT server, but has the highest integration with the current users desktop. The management of NT servers can be a significant cost for our size institution.
Exchange is good for workgroups or small business but can become complex for larger companies.
Designed for midsize companies wanting a vast amount of features including ability to integrate into large document management systems. Has the best management toolset for managing multiple servers, users, and features. Requires an additional client on desktop to utilize all features.