http://www.cass.be
This link leads to a Belgian legal database, which contains Belgian legislation, case law, bibliography - in French and Dutch. The information is free of charge.

http://www.droitbelge.be
Droit Belge is a legal database, which provides a search mask for Belgian legal acts. The Information is free of charge but only available in French.

http://www.just.fgov.be
The website of the Public Federal Services. The website is available in French, German and Dutch. It offers Belgian Official Journal, laws, case law, and a legal library, which are free of charge but only available in French and Dutch.

http://www.belgiumlex.be
Another Belgian legal database, which contains Belgian and international legislation, case law but only in French and Dutch. The information is free of charge.

http://www.dekamer.be/kvvcr/pdf_sections/publications/constitution/grondwetEN.pdf
The online version of the Belgian constitution in English, for free.

http://reflex.raadvst-consetat.be/reflex/?lang=fr
Database for Belgian texts of law.

http://www.arbitrage.be
The official website of the Belgian Constitutional Court, the Grondwettelijk Hof van Belgie. It provides court decisions from 1985 on in Dutch as well as French, partially in German and English – free of charge.

http://www.raadvst-consetat.be/?page=caselaw&lang=fr
Decisions of the Supreme Administrative Court of Belgium in French and Dutch from 1994 on.

http://www.juridat.be/cgi_juris/jurf.pl
Another Database of court decisions. For free, in German, Dutch and French. It provides decisions of the courts and tribunals, as well as commissions.

http://www.lachambre.be/kvvcr/index.cfm?language=fr
The official website of the Chambre des Représentants de Belgique. Following the link "Recherche" on the right-hand side of the page, it provides a search mask on the official law gazette from 1988 on for free, in French and Dutch.