OnixS

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.

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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 online FIX Parser for the visualisation of FIX messages, 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

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Read the full article: 'What is the ICE Private Order Feed and why does it matter?'

What is the ICE Private Order Feed and why does it matter?

13 May, 2025

In high-performance trading environments, access to timely and precise visibility of a trading firm's status in the market is essential. One such ...

Read the full article: 'Exploring Nodal Exchange products and OnixS integration support'

Exploring Nodal Exchange products and OnixS integration support

30 April, 2025

The North American energy and environmental markets are rapidly evolving, with growing demand for accurate pricing, efficient risk management, and ...

Read the full article: 'What is Eurex T7?'

What is Eurex T7?

8 April, 2025

Eurex T7 is the trading architecture that underpins Eurex’s electronic trading environment, providing access to its derivatives markets. It is based ...

Read the full article: 'What is a FIX API?'

What is a FIX API?

26 March, 2025

What is a FIX API? Plus a practical FIX API example

Read the full article: 'CME iLink 3 CGW migration update - the final final deadline'

CME iLink 3 CGW migration update - the final final deadline

8 February, 2025

CME Group has extended the deadline for migration from CME iLink 2 to iLink 3 Convenience Gateways (CGW) for order entry to Saturday the 1st March ...

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).

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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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