And other thankfull users here. We use DokuWiki to organize, coordinate and document all our projects. We even do whole user manuals in it and export them to .pdf-files using dw2pdf
plugin. Since we use DokuWiki (~since 2 years) we increased our productivity by ~60% when it comes to generating and managing technical documentation and user manuals, because version control and revisioning is just build-in and no one has to deal with office documents and to figure out who changed something and when and if it is the newest version etc.