As noted by SymbianOne Symbian recently updated P.I.P.S. and version 1.2 now supports the latest UIQ phones. 1.2 also adds a full-featured port of the Open Source zlib compression library. The 1.2 version was made available to S60 through the Novemeber Open C release.
The v1.2 release features IPv6, multicast support, new IOCTLs and socket API enhancements as well as various bug fixes.
P.I.P.S. Is POSIX on Symbian OS. POSIX
libraries on Symbian OS significantly reduces the effort required to
migrate existing desktop and server components, and mobile applications
from other platforms, onto Symbian OS.