I'm not saying this is the best thing since sliced yet, but I'd buy this for a dollar, excellent results so far even on the 1m timeframe, very consistent. It is based on fibos and harmonic patterns and it is free!
There are two types, namely Zup over at forextsd and korhamonics, that are 'works in progress'. I do not use the grid, I use the red and blue boxes or I wait for a pattern.