Open Source API for trading algorithms? 
Best way the get in to it

May I ask you why you specifically need Open Source? You can find several APIs (even for demo accounts) out there; you can use them for free (at least in simulation and testing), but will not have access to the source code.

Our Dear Leader            Throws $35k watches »

His Highness Tim Sykes has draped us with another lessons to be learned in trading marijuana drug company penny stocks.

How to develop with R on an Apple Ipad Iphone or Android using Rstudio Server for Free 
Really?? »
I show why RStudio enables you to develop R on a remote web server. – See more at: https://quantlabs.net/blog/2012/05/how-to-develop-with-r-on-an-apple-ipad-iphone-or-android-using-rstudio-server-for-free/#sthash.UcW6bNRG.dpuf

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