FIX Engine and Direct Market Access
SDK Solutions

for mission critical trading infrastructure and application frameworks

OnixS Specialist Software

We provide Direct Market Access (DMA) Software Development Kits (SDKs) for mission critical trading infrastructure and application frameworks. Our SDKs are fully supported and designed to enable developers to quickly integrate market data feeds, order entry APIs, and post trade feeds into trading and application frameworks.


Our Products

directConnect Expand / collapse

A suite of venue specific calibrated and certified native protocol and FIX protocol Market Data Handler, Order Routing, Trade Capture and Drop Copy SDK solutions.

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FIX Engines Expand / collapse

Our FIX Engine products are ultra low latency FIX Protocol .NET / C#, C++ and Java SDK implementations to FIX-enable applications and execution/order management systems.

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FIX Dictionary & Tools Expand / collapse

We offer the FIX Dictionary for FIX Protocol reference, the OnixS FIX Analyser for the development and operational support of FIX Protocol messaging infrastructure, and online references on using FIX with SBE, FIXP and FIXT.

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Why choose OnixS?

OnixS provides easy to use Direct Market Access (DMA) SDK solutions enabling proprietary trading groups, commodity and energy trading firms, application ISVs, investment banks and exchanges to save time and money in the build and ongoing maintenance of trading systems and application frameworks

  • Offered on a low-cost fully-supported subscription basis

  • High-performance multi-platform implementations

  • Minimises the cost of deploying critical trading infrastructure

  • Fast-start to FIX-enable trading, order management and risk management systems

Insights : OnixS

News, views and technical updates from across the industry


OnixS C++ FIX Engine vs QuickFIX C++ performance comparison

7 March, 2023

The OnixS FIX Engine SDKs include reference implementation source code samples that are an aid for developers to quickly get familiar with, and then ...

Eurex T7 Release 11: What you need to know

22 September, 2022

The Eurex T7 Release 11 exchange platform functional enhancements are summarised here = ...

Exploring The History Behind FIX Protocol

16 September, 2022

FIX Trading Protocol started as a revolutionary concept and is now playing a major role in the electronic processes used within the trading ...

A brief history of CME Globex

14 July, 2022

CME Globex, which started operation in 1992, is a global electronic trading platform used for futures, options, and commodities trading across ...

Release Notes

The OnixS Release Notes are detailed descriptions of new features, improvements and bug fix releases for all OnixS products that are published via an email list server, Twitter, RSS feed and on the web.

We recommend listenning to these Release Note updates via your preferred mechanism(s).


Free 30 day evaluation

Our objective is to provide you with ready to use evaluation SDK download distributions for market access solutions that are specific to your target venue and code base.

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