The project was supported and partially funded by Google Ideas, and it’s a clean, highly accessible way to find and download these crucial documents. At present, it holds every constitution in force as of September this year in every independent state across the world. Constitute will soon be updated to include a version of every available constitution written since 1789.
Google says the purpose of the site is to help people trying to draft new or updated constitutions for their region. They’ll certainly use it the most, but as with any public archive – the significance here is that absolutely anyone can now access this important trove of information.