In this post two useful resources for constitutions:
On the new project website Constitute it is possible to read, search and compare the constitutions (in force in September of 2013) of nearly every independent state in the world.
The - now 177, available in PDF or HTML - constitutions are translated in English and can be searched free-text by a country selection or as a whole. Relevant passages/provisions of each constitution are tagged with a topic e.g., 'right to privacy' or 'equality regardless of gender', so you can quickly find relevant excerpts on a particular subject, no matter how they are worded.
Browse the 300+ topics (in the expandable drawer on the left of the page), or see suggested topics while typing in the search bar. Comparison is made easy because of the possibility to 'pin' (save) passages/provisions and download them in one document.
The HeinOnline World Constitutions Illustrated contains the current constitution of every country in its original language format and an English translation, as well as substantial constitutional histories for countries such as Australia, Brazil, China, France, Mexico, the United Kingdom, and many more.
Included are links to relevant full text scholarly articles and commentaries and other relevant sources, online resources and bibliographic references. It enables legal scholars to research the constitutional and political development of every country in the world.
For an example on the Dutch constitution, click here.