I just suggested to ET that brokers also be identified by the type of software. I think for serious, active traders, a Linux / Java / MS coded / stand-alone connection is far superior to a browser-based. I've used IB's Java stand-alone for years, but many of the newer firms tend to go quick & dirty, with browser software. I trade 98% via desktop, with 10 multi-screens, and only use a cell if emergency. Looking for another broker, but only with stand-alone connections.
Good morning Q.E.D. If you email me, I can provide a summary of our software that have APIs and their cost. They are all Windows downloaded software except Realtick's API can be accessed using a Linux OS server. We offer Lightspeed Trader (C++), Sterling Trader Pro (ActiveX-C#), Eze EMS (formerly RealTick-many supported languages: C#/C++, Python, Java, Go, or Ruby, to name a few) and CBOE Silexx (C#).