OpenBSD Tips and Tricks. Everyday tasks like creating
your own encrypted password keeper file, partitioning,
setting up ntpd, using vim and mutt, conky, fluxbox, and
many others. Also a blog with ongoing experiments and
learning with comments from users.

Cygwin is a Linux-like environment for Windows.
It consists of two parts:

A DLL (cygwin1.dll) which acts as a Linux API
emulation layer providing substantial Linux API functionality.

A collection of tools which provide Linux look and feel.

The Cygwin DLL currently works with all recent, commercially
released x86 32 bit and 64 bit versions of Windows, with the
exception of Windows CE.

Note that the official support for Windows 95, Windows 98,
and Windows Me has been discontinued with the latest
Cygwin major release 1.7.