Free, open-source crypto trading bot, automated bitcoin trading
User-friendly and completely free algorithmic trading platform
roboquant is a very fast algo-trading platform
A Python-based development platform for automated trading systems
Open-source crypto currency exchange software
Zipline, a Pythonic algorithmic trading library
Algorithmic trading and quantitative trading open source platform
C# algorithmic trading platform
Free Java components for Quantitative Finance and Algorithmic Trading