The purpose of this paper is to present a practical case of application of web information systems for citizens. In particular, it presents the results of building a web platform to support management and divulgation of information about the offer of justice services in Colombia, denominated "Map of Justice Offer" and composed of three software products: (1) Thesaurus of Justice Offer, (2) Directory of Institutions, and (3) a platform of indicators and reports about justice offer. The main contribution of this work is to show a way in that information technology could bring support to very important public sectors like justice in Colombia, which is aligned to the National Plan of Information and Communication Technologies -- "Colombia Plan TIC".