Passage: On November 15, 1999, Red Hat acquired Cygnus Solutions. Cygnus provided commercial support for free software and housed maintainers of GNU software products such as the GNU Debugger and GNU Binutils. One of the founders of Cygnus, Michael Tiemann, became the chief technical officer of Red Hat and by 2008 the vice president of open-source affairs. Later Red Hat acquired WireSpeed, C2Net and Hell's Kitchen Systems.In February 2000, InfoWorld awarded Red Hat its fourth consecutive "Operating System Product of the Year" award for Red Hat Linux 6.1. Red Hat acquired Planning Technologies, Inc in 2001 and AOL's iPlanet directory and certificate-server software in 2004.

Question: What support did Cygnus provide?
commercial support