Some people join homebrewing clubs and enter homebrew competitions. Versions for the Wii Homebrew Channel and Amazon Kindle have also been developed. See List of Dreamcast homebrew games. Another option for Homebrew development is the use of a modchip. The console includes stereo sound capabilities for homebrew games. This allows creators of Homebrew content access to their target audience of Xbox 360 owners. Linux on the PlayStation 3 allows for a range of homebrew programs to be developed. Many third-party applications are currently in development through Wii homebrew. The Atari 2600 has been a popular platform for homebrew projects, with games developed. One impediment to NES Homebrew development is the relative difficulty involved with producing physical cartridges. Additionally, Fink, Homebrew and MacPorts have ported ClamAV. Its low price and simple design make it suitable for DS homebrew. The Atari 2600, released in 1977, is a popular platform for Homebrew projects. Coopers also produce a large range of homebrew kits. As with the PlayStation, all models are capable of Homebrew.