It's only available for Notes and Exchange environments.
BPS is based on the 4.1 code, but with a more simplified management tool, and a limited amount of patches are being released.
The software and service connects to messaging and collaboration software (MDaemon Messaging Server, Microsoft Exchange, Lotus Domino, Novell Group Wise) on enterprise networks and redirects emails and synchronizes contacts and calendaring information between servers, desktop workstations, and mobile devices.Beginning with version 4.1.2, the company introduced a new option, Black Berry Enterprise Server for Applications, which provides a secure wireless gateway for Black Berry devices without requiring the device owner to possess an email account.The latest major revision, version 5.0, was released in 2009 for Exchange and Domino; support for Group Wise was added in 2010.provides full synchronisation of read/unread status, deletions, mail subfolders (including sent items), contacts, and calendar, all without license costs and without the requirement of an expensive and sometimes extremely difficult to acquire BES tariff.(For example, Orange in the UK may make it difficult to supply BES package/provisioning to less than 10 handsets at a time, and other operators often have extreme difficulty applying the BES package to handsets/subscribers that were originally BIS supplied.) For Group Wise RIM offered Blackberry Enterprise Server. The Black Berry Enterprise Server Resource Kit (BRK) is a collection of useful tools and other resources released to expand the manageability of the Black Berry Enterprise Server. Each BRK release is developed and certified compatible for each particular BES service pack version.