>>>>> About QuickFIX
QuickFIX is a full-featured open source FIX engine, currently compatible with the FIX 4.0-4.4 spec. It runs on Windows, Linux, Solaris, FreeBSD and Mac OS X. API's are available for C++, Java, .NET, Python and Ruby.
>>>>> About FIX
The Financial Information eXchange (FIX) Protocol is a "language" which defines specific kinds of electronic messages for communicating securities transactions between two parties. FIX defines only the format of the messages and the session-level interaction between two applications.
H. Neilson, L. Rousseau-Nepton, S. Lawler, и K. Spekkens. (2019)cite arxiv:1910.02976Comment: 11 pages. Community paper submitted to the Canadian Long Range Plan 2020, https://casca.ca/?page_id=11499lrp2020/.