OpenNIC Wizard simplifies the process of switching over to using the OpenNIC DNS (Domain Name System) resolver pool in order to gain access to OpenNIC domains (.geek, .oss, .free, etc.) as well as continuing to be able to resolve legacy ICANN domains (.com, .org, .net, etc.). Using OpenNIC Wizard means you can switch over to OpenNIC without knowing anything about DNS or about configuring custom DNS settings.
ccglue is a complementary tool to cscope and ctags. The tool builds a cross-reference symbol database from cscope (and ctags) databases that can be used to display dependency-graphs (aka call-trees, code flow). Visualization can be done with the Vim CCTree plugin or the built-in stand-alone command-line tracer.