Philadelphia is a low latency Financial Information Exchange (FIX) engine for the JVM.

You can use Philadelphia to connect to stock exchanges, brokerage firms, and other network endpoints that use the FIX protocol. You can also use it to provide your own services using the FIX protocol.

Philadelphia requires Java Runtime Environment (JRE) 8 or newer.

Philadelphia implements the following FIX protocol versions:

• FIX 4.2
• FIX 4.3
• FIX 4.4
• FIX 5.0
• FIX 5.0 Service Pack 1
• FIX 5.0 Service Pack 2
• FIXT 1.1

See the FIX Trading Community for the protocol specifications and Philadelphia Extras for additional FIX dialects.

Besides the library, Philadelphia contains the following applications:

• Terminal Client is a simple console application for interacting with a FIX acceptor

• Test Acceptor is an example application implementing a simple FIX acceptor

• Test Initiator is an example application implementing a simple FIX initiator

• Performance Test contains microbenchmarks for the FIX protocol implementation

Add a Maven dependency to Philadelphia:

<dependency>
  <groupId>com.paritytrading.philadelphia</groupId>
  <artifactId>philadelphia</artifactId>
  <version><!-- latest version --></version>
</dependency>

For more information on Philadelphia:

• See Parity Guide for the user and developer documentation
• Follow @paritytrading on Twitter for news and announcements
• Join paritytrading/chat on Gitter for discussions

Philadelphia is released under the Apache License, Version 2.0. See LICENSE for details.