libUTL++ is a C++ class library that includes a wide range of highly re-usable functionality and abstractions. It uses templates in some places, but generally favors an object-oriented design. The library covers functionality in areas such as containers, text processing, memory allocation, date/time manipulation, stream I/O, data compression, and others. It also includes abstractions to facilitate common tasks such as object copying, comparison, serialization, etc.
NUTSS (NAT, URIs, Tunnels, SIP, and STUNT) is a network architecture that combines data-decoupled signaling and data-coupled signaling to establish Internet flows. The goal is to enable intermediary systems like firewalls and NATs, which can intercept the signals, to discover the intent of a network connection. The intermediaries can then facilitate the connection setup or enforce other policies.