and developer of the Ubuntu operating system, announced plans for a new technology partnership, with Linspire aiming to "begin basing ... [their] desktop Linux offerings on Ubuntu." On June 13, 2007, Linspire and Microsoft announced an interoperability collaboration agreement with a focus on document format compatibility, instant messaging, digital media, web search, and patent covenants for Linspire customers. This agreement has been criticised, most notably by the Groklaw website for being disingenuously short-lived and limited, and against the spirit of the GNU General Public License. Kevin Carmony, in one of the regular "Linspire Letters," asserted that the agreement would "bring even more choices to desktop Linux users [and] ... offer a "better" Linux experience." Linspire bases its product code names on fish found near its headquarters: Linspire/LindowsOS 4.5 was code named Coho; Linspire Five-0 (5.0 and 5.1) and Freespire 1.0, Marlin; and Freespire 2.0 and Linspire 6.0, Skipjack. CNR Linspire's CNR (originally Click'N'Run) was a software distribution service based on Debian's APT. It was designed to serve as a GUI-based, user-accessible means of downloading and installing various applications, both free and proprietary. The service allowed users to install available applications using a single click. CNR also included a set of Click and Buy (CNB) software, which included many commercial applications to members at a discounted rate. CNR had over 38,000 different software packages, ranging from simple applications to major commercial works such as Win4Lin and StarOffice. CNR was originally subscription-based with two tiers: basic service cost $20 annually, and gold, featuring discounts on some commercial applications, $50. In 2006, Linspire announced that the basic service was to be made available for free. Linspire planned to port CNR to the Ubuntu distribution. The company announced on April 24, 2006 that CNR would be released under an open source license. The release of the free CNR client was planned to coincide with the release of Freespire 2.0 and Linspire 6.0. On January 23, 2007, Linspire announced that it intended to provide CNR for other Linux distributions, both APT- and RPM-based, including Debian, Fedora, OpenSUSE and Ubuntu. This support was expected to appear in mid-2007. On February 8, 2007, Linspire, Inc. announced a partnership with Canonical Ltd., publisher of the Ubuntu Linux distribution. This deal would see Linspire and Freespire migrate from the unpredictable Debian release process to the semiannual Ubuntu release cycle. It was intended that the main Ubuntu distribution would become