Spike: Powerful Rails Log Parsing on the Mac
Spike is a log file parser application for the Mac that gives you some powerful features for working through your Rails log files - it was developed by British Rails and Mac developer Matt Mower. Spike is open source, so if Cocoa / Objective C are your bag, you can customize it to your heart's content. Check out the code on Github.
If you want to learn more, Matt's put together a 5 minute video demonstration (in HD, if you click through instead of watching it here) of the main features of Spike. He demonstrates opening a log file, browsing through requests, and other features.
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