4c - Version 3.3 The innovative browser add-on 4c is the first one to support the visual memory. Thus the revolutionary browser add- on 4c achieves to integrate the visualisation of websites and all other applications on your computer within the navigation. You don´t need to mark these cryptic adresses any more or find a specific word document through trial and error within the windows task bar. Just one click and you see all apllications that are in use.