The OnixS ultra low latency FIX Engine products are high speed implementations of the Financial Information Exchange (FIX) Protocol in .NET / C#, C++ and Java, specially designed for mission critical, ultra low-latency, high frequency trading infrastructure and application frameworks.

All OnixS FIX Engine SDK implementations provide an easy to use feature rich API for fast, efficient and flexible integration into application and trading frameworks.

The FIX Engine and FIX/FAST Decoder/Encoder SDKs for .NET / C#, C++ and Java are development efficiency solutions on a low cost fully supported subscription basis. They are high-performance multi-platform FIX library implementations offering developers a fast-start to FIX-enable trading, order management and risk management systems while minimising the initial and long term cost of deployment of critical trading infrastructure.

All OnixS FIX Engine software distributions include quick-start source code reference implementation working examples for FIX parser, latency and throughput benchmarks, working with FIX dialects and repeating groups, FIX message parser and FAST decoding and decoding, FIXML convertor, session scheduler, pluggable session state and message storage as well as FIX initiator/accepter client application examples supporting the full FIX implementation of session layer standards.

OnixS offer a comprehensive library of FIX Support Packs that are FIX venue specific calibrated and tested FIX Protocol variant implementations. These custom FIX variant implementations are designed to reduce the integration burden in customizing the FIX Dialect for specific venues.

.NET FIX Engine

is a low latency FIX Protocol SDK implementation in .NET that FIX-enables .NET applications (C#, VB.NET, Managed C++, F#, etc.) in a simple, reliable and cost effective manner.

C# FIX Engine Programming Guide >>

Supported platforms:

  • .NET Framework 4.7
  • .NET Framework 4.6.2
  • .NET Framework 4.5.2

C++ FIX Engine

is an ultra low latency FIX Protocol SDK implementation in C++ to provide superior performance for mission-critical trading software systems via easy-to-use and flexible API.

C++ FIX Engine Programming Guide

Supported platforms:

  • Linux (RedHat, CentOS, Ubuntu, Debian, etc.)
  • Windows

Java FIX Engine

is a high performance, low latency FIX Protocol SDK implementation in Java that facilitates development of FIX based applications on the Java platform using its open and extensible API.

Java FIX Engine Programming Guide

Supported platforms:

Java 1.7+