These require a download in order to watch TV online. All of them have been tested to be safe and free of adware.
Joost is a new way of watching TV on the internet. With Joost, you get all the things you love about TV, including a high-quality full-screen picture, hundreds of full-length shows and easy channel-flipping.Download: http://www.joost.com/
Babelgum allows professional content owners of all sizes to reach safely their target audiences wherever they are, engage them in new ways and earn money.Download: http://www.babelgum.com/
Zattoo is live TV on your PC - it's the football game as you chat, the news as you email, and Lost as you pay your bills. Zattoo is also TV when you don't have a TV - it's the channels you want, when you want, where you want.Download: http://zattoo.com/
Azureus Inc. is the provider of the most popular P2P application for the transfer of large media files. With more than three years of technology innovation, proven robustness, and more than 140 million downloads of its application, Azureus users connect with one another from more than 100 countries and 40 languages.Download: http://www.vuze.com/app
These offer a high bitrate viewing quality but videos must be viewed from the browser.
Jalipo is the first online marketplace for TV and video. It lets content owners use the Internet to offer their channels, video-on-demand and live events direct to viewers around the world.http://www.jalipo.com/epg/
Veoh is a Web site that’s headed for your TV. It’s also the name for a suite of applications for collecting, publishing, and watching a vast selection of HD-quality video programming. Veoh is a diverse, virtual community of indie publishers coming together with their new audiences.http://www.veoh.com/
DivX Stage6 is a place for people who love video. It's a high-quality platform that lets anyone upload, download, view, share and experience everything from short clips captured on mobile phones all the way up to full-length, high-definition feature films. Anyone can become a publisher, anyone can build an audience and every video available on Stage6 is compatible with over 70 million consumer electronics devices from every major manufacturer, making it easy to play back Stage6 videos on your television or portable device.http://stage6.divx.com/
Dailymotion is like the french youtube but slightly higher quality and they take much longer to delete copyright content.http://www.dailymotion.com/
Blip.tv is dedicated to pioneering the next generation of video programming — both narrowcast and broadcast — as producers and audiences educate and entertain each other according to the rigorous compliance standards that we have developed in conjunction with our users.http://blip.tv/