- Spektral (https://danielegrattarola.github.io/spektral/) is a framework for relational representation learning, built in Python and based on the Keras API. Spektral is an open source project developed by Daniele Grattarola.
- SPARE (Something for PAttern REcognition) is a standard C++ header-only library for designing pattern recognition and soft computing systems. Currently, it includes also algorithms for processing structured data, such as labeled graphs and sequences of objects. SPARE interacts with other well-known and consolidated software libraries, such as the boost library. SPARE is designed to operate by means of STL-like data structures, defining a standardized interface for the algorithms.