TIBCO ActiveSpaces® Transactions is an in-memory transactional application server that lets you create high-performing, distributed Java transactional applications that run on low-cost commodity hardware. ActiveSpaces Transactions lowers costs with breakthrough performance that doesn't require a mainframe or cluster investment. Instead, it off-loads processes and data from the mainframe to deliver savings in hardware, software licenses, rack space, power, networking, and other data center costs.