Although Linux tends to grab most of the open-source operating system spotlight, it's hardly the only solid free software option. eWEEK Labs tested one open-source alternative, FreeBSD Version 5.1, which started shipping last month. The FreeBSD Project describes Version 5.1 as a "new technology" release, intended to enable users to check out new features, such as Version 5.1's expanded support for USB (Universal Serial Bus) 2.0 devices, RAID and serial-ATA controllers, and USB Ethernet adapters.