There are software like Dragon Speaking or Microsoft product to enter command by using your voice. But for browsing web without mouse and keyboard, you just need an add-on for Firefox.
Google Chrome Extensions are live and working properly. If you don’t want to install screen capturing software like SnagIT then you may go for online screen capturing tool like Chrome Extension for easy capturing.
YouTube is one of the largest portal of different videos and if you want to download any of them, you can do that by using Firefox browser.
Outlook is the market leader in email client software. Use outlook add-on to remove duplicate emails.
Page load time is really important factor for getting regular traffic on a blog or normal website. There are many ways to reduce the load time of website and you will find lot many suggestions on Internet to do that. How about getting suggestions from search engine market giants like Google and Yahoo.
If you want to become a SEO webmaster and need to know the details about a website from A to Z then go ahead and install SeoQuake SEO extension on Mozilla Firefox browser. There are lot many features of SeoQuake which will turn you into a webmaster.