In November 2005, NICTA announced that Qualcomm was deploying NICTA's L4 version on their "Mobile Station Modem" chipsets. This led to the use of L4 in mobile phone handsets on sale from late 2006. In August 2006, ERTOS leader and UNSW professor Gernot Heiser spun out a company called Open Kernel Labs (OK Labs) to support commercial L4 users and further develop L4 for commercial use under the brand name OKL4, in close collaboration with NICTA. OKL4 Version 2.1, released in April 2008, was the first generally available version of L4 which featured capability-based security. OKL4 3.0, released in October 2008, was the last open-source version of OKL4. More recent versions are closed source and based on a rewrite to support a native hypervisor variant called the OKL4 Microvisor. OK Labs also distributed a paravirtualized Linux called OK:Linux, a descendant of Wombat, as well as paravirtualized versions of SymbianOS and Android. OK Labs also acquired the rights to seL4 from NICTA.