Before download your internet speed booster.Try to increase your speed by using the following tips.
1.Get a download accelerator
2.Turn off all unused apps while downloading
3.Don't upload information while you're downloading
4.Update your network device driver
5.clear your temporary download history files.
6.Use latest version of any browser
When i had the same problem,i followed the same ways.I am sure,it's very useful to increase your speed.Then you can check your new internet speed using ScanmySpeed.com
If your speed not improve means use this link to download Internet Speed Booster (free) - Download Latest version in english on Kioskea