Rsyslog is an enhanced multi-threaded syslogd. Among others, it offers support for on-demand disk buffering, reliable syslog over TCP, SSL, TLS, and RELP, writing to databases (MySQL, PostgreSQL, Oracle, and many more), email alerting, fully configurable output formats (including high-precision timestamps), the ability to filter on any part of the syslog message, on-the-wire message compression, and the ability to convert text files to syslog. It is a drop-in replacement for stock syslogd and able to work with the same configuration file syntax.
The sctplib library is a fairly complete prototype implementation of the Stream Control Transmission Protocol (SCTP), a message-oriented reliable transport protocol that supports multi-homing and multiple message streams multiplexed within an SCTP connection. The API of the library was modeled after section 10 of RFC 2960, and most parameters and functions should be self-explanatory to the user familiar with this document. In addition, the library also provides a number of helper functions for managing timers and UDP communication.