Crawdad provides HTML generation and CGI response support to Python programs. With Crawdad, a Python program builds a DOM-like, in-memory tree that represents an HTML document. Tree nodes represent tagged HTML elements, and subtrees represent the contents of those tags. Crawdad generates HTML by walking the tree. Its action/response CGI framework supports common actions needed to maintain database records (list, add, update, delete, etc.) and can be extended to support application-specific actions.
No-install Unix Tools for Windows is a collection of 18 of the most useful Cygwin tools packaged into a single 1.1MB (floppy sized) EXE file that runs without any installation process. Simply running the executable instantly creates a Unix environment for Windows, without making any persistent changes to the underlying system. It includes bash, less, gzip, grep, find, df, du, ls, cat, cp, mv, ps, rmdir, mkdir, rm, pwd, and tar.
mfw allows multiple firewall configurations to be managed from the commandline on Mac OS X. Multiple firewall modes (and easy means of selecting between them) are useful on laptops, where one may want a default paranoid firewall, a mode for network scanning with nmap, modes for various networked games, or to run a software Network Address Translation (NAT) wireless base station.