A tool for checking broken web links

I would suggest that uzbl is just the right ninja magic for this. It is a scriptable, console-controllable single-purpose browser. Being based on webkit, its rendering and javascript support is first class, but it follows the unix phylosophy of doing one thing and doing it well while allowing other programs to push data in and out.

There is a wrapper for it that adds support for a tab-like interface as well.

well, opengrok for opensolaris code base but no opengrok for linux codebase, one could start one however but the cost involved in setting up and maintaining is too greater I suppose. kernel.org maintains only kernel source tarballs. It has been left to the individual distro maker to distribute source code along with the product OS but practices are seldom distribute the source along with the code(I guess debian is an exception and thats why it provides more than 20-30 disks)

There is this : http://lxr.linux.no/

LXR (formerly "the Linux Cross Referencer") is a software toolset for indexing and presenting source code repositories. LXR was initially targeted at the Linux source code, but has proved usable for a wide range of software projects.

Update: Another link I came across is http://fxr.watson.org/ , which has all the popular distro sources cross reference. Pretty useful for systems programmers.