EWOS - European Workshop on Open Systems - originally the European group for defining profiles of the OSI standards, its scope widened a bit from about 1993, but eventually closed in early 1998.MTS - Microsoft Transaction Service - The software that provides transaction support for COM+ (DCOM) applications under Windows NT. It is renamed in Windows 2000, but the old name will do. Internally it uses OLE Transactions as its commitment protocol. Microsoft have said it will support TIP in Windows 2000, and there is an implementation (with some oddities) in the NT5 beta 2 released in September 1998.
OSI TP - Open Systems Interconnection - Distributed Transaction Processing: ISO/IEC 10026. An International Standard in the OSI family specifying a protocol for transaction processing. The standard consists of several parts - 1: Model, 2: Service, 3: Protocol etc. The original was fairly closely modelled on SNA LU 6.2.
OTS - Object Transaction Service - One of the CORBA services defined by OMG. There are several implementations of OTS, some providing a new interface to older transaction processing systems, some associated with general purpose ORBs.
TIP - Transaction Internet Protocol - a two-phase commit protocol specified in Internet RFC 2371 and explained in RFC 2372. It uses text encoding for its messages which are sent on separate connection to the application protocol. The application protocol can be anything, but carries the transaction identification as a TIP URL.