- ACE - for network programming, CORBA implementation (in TAO library), threading and over additional functionality for concurrent communication software
- boost - set of useful libraries for various purposes
- pugixml - light-weight XML processing library, with full Unicode and XPath 1.0 support
- libcurl - multiprotocol file transfer library
- OpenSSL - implementation of SSL and TLS protocols and a full-strength general purpose cryptography library
- libssh and libssh2 -implementation of SSH protocol
- Qt - application and UI framework
All the libraries are free and open source.