Dygraphs (http://dygraphs.com/ http://dygraphs.com/) has treated me well in the past. No dependencies, tiny library, handles millions of points, and it's html5

Dygraphs (http://dygraphs.com/ http://dygraphs.com/) has treated me well in the past. No dependencies, tiny library, handles millions of points, and it's html5 canvas based.