1. www.fiverr.com : hire people to do job for 5 dollars.
2. www.screenr.com: screen recoder.
3. imo.im : skype, facebook, gtalk, yahoo all at one place.
4. www.wetransfer.com : to transfer big files.
5. cutmp3.net : cut mp3, free ringtone maker.
6. www.slideshare.net : power point presentations.
7. www.librophile.com : audio books and e books.
8. passpack.com : to manage all your passwords.
9. join.me : to share your screen with others.
10. www.noteflight.com : to create your own music by writing it in musical notations.
11. whoishostingthis.com : to find out on which web server is any website being hosted.
12. www.alexa.com : to find alexa rank of any website.
13. www.pogo.com : online gaming.
14. iknow : learning tools.
15. www.bizrate.com : shopping search engine to compare prices.
16. sobees.com : update status on facebook, twitter, myspace simultaneously.
17. snopes.com: to check if the email you have received is real os spam.
18. mathworld.wolfram.com : web’s most extensive mathematical resource.
19.www.epinions.com : to get reviews of people on books, movies, electronic gadgets, cars etc..
20. speedtest.net : check the speed of your computer.
21. springpadit.com : helps you organize your information in really smart way by various templates.
22. teuxdeux.com : TeuxDeux is a simple, designy to-do app. If you like making to-do lists, you will love TeuxDeux.
23. download.cnet.com : download softwares.
23. minutes.io : Take notes in a meeting & share them right away.
24. woorank.com : check out SEO veiw of any website.
25. faxzero.com – send an online fax for free.