One of the better-known "pure plays" is Red Hat Software (nasdaq: RHAT - news - people ), which provides support services for Linux.

FORBES: The Open Source World

At the same time it's suing SAP, Oracle has been trying to undercut the support business of open-source software company Red Hat (nasdaq: RHAT - news - people ).

FORBES: Grand Theft Software?

The company has a deal with Linux purveyor Red Hat (nasdaq: RHAT - news - people ) to develop Linux for the embedded market, using Wind River tools, middleware and services.

FORBES: Wind River Gets Smart

He was worried about losing his top tech people to other local highfliers, such as Red Hat (nasdaq: RHAT - news - people ), which were doling out stock options like candy.

FORBES: Who Wants to Be Public?

Hewlett-Packard (nyse: HPQ - news - people ), Sun Microsystems (nasdaq: SUNW - news - people ), Red Hat (nasdaq: RHAT - news - people ) and scores of other firms sell Linux-based computers.

FORBES: Magazine Article

Further, IBM announced a deal with open source company Red Hat Software (nasdaq: RHAT - news - people ) to develop Linux in emerging markets by offering a combination of Red Hat Linux and supporting documentation, and IBM's new Linux skill-building tutorials on its site.

FORBES: IBM's Software Gambit

Fujitsu hopes to have resolved those reliability concerns with donated software contributions to the Linux systems maintained by Red Hat (nasdaq: RHAT - news - people ) and Novell (nasdaq: NOVL - news - people ), including fault-resilient driver software and system crash analyzers.

FORBES: Fujitsu's Big Server Play