Hundreds of websites offer mapping services, which highlight roads, railways, streets and scores of other things. Most of these sites charge for commercial use of their data and almost certainly won’t allow users to change the maps in a wiki-like fashion.
OpenStreetMap is a project to provide maps, like Google Maps does. Unlike sites like Google, [...]
Use and make free, as in beer and freedom, maps with OpenStreetMap
LyX: A FOSS ‘WYSIWYM’ LaTeX word processor
You have no doubt heard of ‘WYSIWYG’ editors, which show you what you get. The vast majority of HTML editors and word processors operate on a WYSIWYG principle, but another principle is WYSIWYM – ‘what you see is what you mean’. The key idea of WYSIWYM editors is that the users merely have to concentrate [...]

