The “Latin Laws” online resource provides links to the Constitutions, Civil Codes, Commercial Codes, and Criminal Codes of Argentina, Bolivia, Brazil, Chile, Colombia, Cuba, Ecuador, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, Panama, Paraguay, Puerto Rico, Peru, Dominican Republic, Uruguay, and Venezuela.
Most links are to government websites, and some are to libraries of congress or universities. It is a work in progess, but almost all of the above links are live, and “coming soon” are laws on anti-corruption, labor law, and tax law, and speciality areas such as mining, pharmaceutical, engineering and construction, telecommunications, and environmental law.
The page “Laws by Country” currently provides the list of links.
This useful initiative is fairly silent about its origins, and one can only glean that it is based out of Miami, Florida, and seems to be sponsored by a law firm, as well as asking for donations.
Hat tip to the Oxford University librarians for making me aware of this resource.