ESP8266 Weather Station library supporting OpenWeatherMap
Constraint Satisfaction Problem solving library for Java
Tiaray's Exposed Architecture library
LibGuide is customized ISO containing Koha, WordPress and Gate Entry
BT configuration by AT commands for Arduino (lib)
Library Clock for GCC (C++)
Library Roman/Arabic for GCC (C++)
a powerfull c++ library for win32/linux, server framework, HttpServlet