Trading and financial software
Following the Trend. By Andreas Clenow, author of the book on trend following trading strategies of the same name.
QuantStart. Algorithmic trading blog.
Quandl. Excellent free historical data site.
Coding the Markets. By John O’Sullivan, founder of SpreadServe which aims to move spreadsheets off the desktop.
Other
UK Polling Report. By YouGov’s Anthony Wells, gives interesting insights into polling methodology.
F1 Sleuth. Statistical analysis of Formula 1 driver performances.