Internet celebrated the April fool's day by launching new products or by remembering the past

Google the un-disputed leader of the internet search had launched com.google. Google launched a flipped-out search page that gets everything backward. 

Microsoft launched a MS-DOS mobile which is a real product in the form of apps. After installing the app you can find yesteryear's MS-DOS command line interface on modern lumina mobile phones. Going into the C:\PROGRAMS\PHONE directory shows programs like MAPS.EXE, MARKET.EXE and INTERNET.EXE; running them from the command line launches the appropriate Windows Phone app.