Apache Synapse is designed to be a simple, lightweight and high performance Enterprise Service Bus (ESB) from Apache. Based on a small asynchronous core, Apache Synapse has excellent support for XML and Web services - as well as binary and text formats. The Synapse engine is configured with a simple XML format and comes with a set of ready-to-use transports and mediators. We recommend you start by reading the QuickStart and then trying out the samples. Synapse is made available under the Apache Software License 2.0.
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In December 2007, Apache Synapse became a top level project (TLP) of the Apache Software Foundation.
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Apache Synapse is an ESB that has been designed to be simple to configure, very fast, and effective at solving many integration and gatewaying problems. Synapse has support for HTTP, SOAP, SMTP, JMS, FTP and file system transports, as well as first class support for standards such as WS-Addressing, Web Services Security (WSS), Web Services Reliable Messaging (WSRM), efficient binary attachments (MTOM/XOP). Synapse can transform messages using key standards such as XSLT, XPath and XQuery, or simply using Java. Synapse supports a number of useful functions out-of-the-box without programming, but it also can be extended using popular programming languages such as Java, JavaScript, Ruby, and Groovy.
Synapse has a completely asynchronous core, and supports non-blocking HTTP and HTTPS using the excellent Apache HttpCore NIO module. In addition, Synapse supports JMS v1.0 and higher, Apache VFS File Systems (FTP, SFTP, File (including zip/jar/tar/gz), Webdav, CIFS), POP3/IMAP/SMTP transports. Apache Synapse can process SOAP 1.1/1.2, pure XML/REST, Text and Binary messages with support for any-to-any conversion and transformation.
The latest release of Synapse is 1.1.1. Its key features are