You know Marketcetera Java HFT open source
It is out there if you ever need a basic framework with source code to start with
This is the FIRST open source project that I know of that started me out a number of years ago
https://github.com/sshack/marketcetera
https://github.com/sshack/marketcetera/tree/master/public
http://yousefourabi.com/blog/2008/04/is-marketcetera-really-open-source/
Current version: http://markecetera.org/
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