BOA (in Portuguese, Bolsa de Objectos de Aprendizagem) or LOP (in English, Learning Object Pool) system is a flexible and innovative Learning Object Repository platform with several features aiming to maximize authors and end-users or learners participation. It is a web application where users submit and retrieve LOs. This repository is different from others because it is based on a credits mechanism and uses the stock exchange market metaphor for dynamically varying the value of LOs as well as the end-users.

The "BOA-GPI" is a BOA's instance configured for support the different editions of the “IT Project Management (Gestão de Projectos Informáticos )” discipline, from the master courses (MEIC) of the Technical University of Lisbon (IST/UTL).