ZipGrep is a utility that can list and search zip (.war, .ear, .jar, etc) archives for text patterns, without the need to extract the archive's contents.
One of a set of tools we're offering as a way to say thank you for being a part of the community.
as for charting there is no 'best'.. i.e. which is the best house to buy? Telerik and Infragistics have good charting controls as part of their packages. They are not free though. For free you could explore codeplex and find one that you like.