1) speed.airtelbroadband.in

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Speedtest.net is a broadband speed test tool that allows anyone to test their Internet connection. Ookla provides this service for free to anyone curious about the performance of their connections to and from hundreds of locations around the world. Whether the test for fun, or you really need to verify and validate the actual speed of your Internet connection Speedtest.net is the place. You can have your historical results, share them easily, and even compare it to others in your immediate neighborhood or around the world.

Sweet SpeedometerOur technology used to implement more than one million tests per day, so it is the global standard bandwidth test. Speedtest.net is owned and operated Ookla, a team of technology veterans, who are convinced that the Internet should always open network for the exchange of ideas and information from across town or around the world

3)  http://www.speakeasy.net

There are many things that factor into your speed test results. Download and upload speed backbone networks, latency, ping times, and DNS servers.

Download
Downloading is a measure of how fast your connection offers content on your computer or local network.

Upload
Upload a measure of how fast content is delivered from your computer or local network with others on the Internet.

For business or exercise-users download and upload speed should match or at least very close. This is important for applications such as VoIP, online games and other interactive programs. Upload speed is even more important if you are running a server in your location. To achieve optimal upload speed is a concern, consider Ethernet, T1 or SDSL services.

Kbps
Kbps transfer rate = kilobit per second transfer rate. There are 8 bits in a byte, so we would divide kbps to 8 to get KB / s transfer rates.

Transfer
The speed is the speed at which data can be transferred between devices. This is sometimes referred to as transit. As downloads, more and more, that is the highest data rate is highly desirable.

Latency
The network latency, a synonym for the delay, is an expression of how long it takes for the packet of data from one designated point to another. In some practices, latency is measured by sending a package that is returned to the sender and the round-trip time is too late. Low latency is very important for businesses and power users.