The Open Penetration Testing Bookmarks Collections is a collection of handy bookmarks to aid in your day to day work or in the course of research. Founder J.Haddi writes,
They are not all inclusive and some sections need to be parsed but they are all good reference materials. I find having this Hackery folder in Firefox an easy way to reference syntax, tricks, methods, and generally facilitate and organize research. Opening it up to everyone will facilitate a knowledge transfer. Hopefully the initial set will grow and expand.
The bookmarks can be be found in this downloadable file.