The setup.exe utility tracks the versions of all installed components and provides the mechanism for installing or updating everything available from this site for Cygwin.

Massachusetts Unix and Linux consultant Tony Lawrence offers troubleshooting services and advice for bloggers and the self employed.

The Linux Documentation Project is working towards developing free, high quality documentation for the Linux operating system. The overall goal of the LDP is to collaborate in all of the issues of Linux documentation.

Linux.com - For the community, by the community, Linux.com strives to be the central source for informed, reasonable, and intelligent Linux information, software, documentation and answers across the server, desktop/netbook, mobile, and embedded areas.

The Open Group works towards enabling access to integrated information within and between enterprises, based on open standards and global interoperability. It is a vendor-neutral and technology-neutral consortium that works with customers, suppliers, consortia and other standard bodies to capture, understand and address current and emerging requirements, establish policies and share best practice

Unix/Linux online manual pages.

MKS Software - A leading provider of Windows emulation software for system development and administrators in a Windows or mixed UNIX / Linux and Windows environment. Supports Windows 7.