This website helps in choosing which program to use to open files with unknown extensions.

http://filext.com/

 

Here's a useful website for some handy keyboard shortcuts.
http://www.microsoft.com/enable/products/keyboard.aspx

 

This website adds Google Search default to Internet Explorer.
http://www.iegallery.com/en-US/Addons/Details/813

 

 Here's a good site for converting text-to-speech.
http://www.oddcast.com/home/demos/tts/tts_example.php?sitepal

 

Working in a foreign language ? Type in your language, anywhere!
http://gate2home.com/

 

If you're working in a foreign language, use Google Translate to translate from any language to any language.   
http://translate.google.com

 

Use this website to check your Internet speed .

http://www.speakeasy.net/speedtest/

 

This site is a tool to check if a port is open on your computer. 
http://www.canyouseeme.org/

 

This is a great site for singers! If you remember some of the lyrics of a song, but can't remember the name, just sing it into the computer microphone .Voice Search will find the name of the song for you in seconds 
http://www.midomi.com/index.php?action=main.search&searchTerm=q7gmsocm0e1kqbhfpp6llal7f6_1341452462764&type=voice&length=30&token=&from=main.search&

 

Download and save any video from Youtube, Dailymotion, Metacafe, iFilm and more!
http://keepvid.com/

 

Want to merge PDF documents? Here's a site that will do it for you.
http://foxyutils.com/mergepdf/

 

This site is a PDF to Word Converter
http://www.pdftoword.com/

 

Here's a link for editing photos online
http://pixlr.com/editor/

 

Reverse Phone Detective helps you find addresses from telephone numbers.
http://www.reversephonedetective.com/

 

Before you buy from unfamiliar websites, run this to check for risks and ensure safety.
http://www.scamadviser.com/

 

This is a link to a webcam to take photos online from your own webcam.
http://www.cameroid.com/snap.php

 

This is a useful site for finding customer service numbers for all the big companies for any comments or complaints in the U.S.  
http://www.contacthelp.com/index.php