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OnixS FIX Engine SDKs

Made by OnixS

London, United Kingdom

Ultra-low-latency FIX protocol SDKs for .NET, C++ and Java, sold alongside venue-specific directConnect market data and order entry kits.

Made by
OnixS
Primary category
FIX connectivity
Also listed under
Not recorded
Built for
Not recorded
Firm size
Not recorded
Deployment
Not recorded
Pricing model
Not recorded
What it costs
Not recorded
How we verified it
Confirmed on the vendor's own site
Source
the page we read
Last checked
2026-10-11
On the vendor's site
open

OnixS FIX Engine SDKs is a fix connectivity product from OnixS. Ultra-low-latency FIX protocol SDKs for .NET, C++ and Java, sold alongside venue-specific directConnect market data and order entry kits. OnixS is based in London, United Kingdom. Buyside Fintech verified that OnixS lists this product on the vendor's own website on 2026-10-11, and the page we read is linked below. We do not record how it is deployed, how it is priced, what it costs and the firm sizes it serves for this product, because OnixS does not publish it; the table below shows those rows empty rather than hiding them. Practitioner reviews and questions about OnixS FIX Engine SDKs appear below, and anyone at a firm that uses it can add one.

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How OnixS describes itself

OnixS Direct Market Access (DMA) SDKs: FIX Engine, FIX/FAST and SBE encoder/decoders, Market Data Handlers, Order Entry, Trade Capture & Drop Copy SDKs

OnixS’s own website, read 2026-08-30

Their words, not ours, and about the company rather than this product. It is not an assessment and nothing in it has been checked.