cTDN is an abbreviation of “cTrader Developer Network”. It was a website called ctdn.com and was dedicated to the community of algo traders using the cAlgo platform. Since then, cAlgo has been renamed to cTrader Automate. Also, the website has been renamed to ctrader.com and has been repositioned to be a community for all traders using cTrader. The website has a discussion forum, user-submitted robots and custom indicators.