Hosted FIX Simulator and testing suite.


  1. Hosted services. We provide you IP/port and you connect your FIX application
  2. Pre-Trade, Trading, and Post-Trade workflows
  3. Supports all FIX versions: 4.0, 4.1, 4.2, 4.3, 4.4, 5.0
  4. All asset classes: Equities, Futures/Options, Foreign Exchange, Fixed Income, and OTC derivatives (CDS/IRS).
  5. High Volumes: Stress test your trading application's throughput ability. provides an easy to use FIX simulation environment for testing of trading workflows. Have an OMS you need to stress test? Need to test cancel and corrects? gives you easy and quick access to a test environment.

Internet addressable, hosted FIX Simulation delivers always available FIX testing. Whether you need to test incoming or outgoing FIX sessions, can provide multi-asset trade scenarios for your application.

The powerful FIXSIM Web Portal allows you manage your FIX session(s) and configure behavoir. With just a browser and your FIX application you can:

  • "Auto Acknowledge" / "Auto Execute"
  • Set Execution Style: Full Fill, Partials, Extreme Volumes
  • View Messages Details, including FIX to English translation
  • Copy and paste FIX messages
  • Paste FIX messages with length and checksum recalculated
  • Manage Trades with Trade Blotter (Cancel, Cancel/Correct)
  • Send Algo orders via FIX ATDL
  • Stream Market Data Messages
  • Submit Orders
  • And much more...

No long term commitments/contracts needed. Pay month to month and cancel any time. FIXSIM provides a powerful solution without the need for a complicated and costly implementation.