pole writes "Version 3.5 of Services for Unix will be free. Previously, it was $99. This article at Information Week has the details. It contains an NFS client and server in addition to POSIX libraries and utilities including pthreads. Aside from the NFS utilities, how does the environment compare to Cygwin?" An anonymous reader adds links to coverage at News.com and at geek.com, writing "The reviews for these tools have been highly favorable. It looks like the next volley has been fired in the struggle between Windows and Linux."