Ключевые слова: Speed Test, Internet Speed Test, Continuous Speed Test, Internet Quality Test

Internet speed test with long duration: long-term download and upload bandwidth (speed) test tool
HTML (online), Windows, Linux, Android versions, free and open source software
Measures download and upload bandwidth, packet loss and round trip time (RTT, ping)
Measures and tracks bandwidth of your internet connection during a long (unlimited) period of time
Measures reliability of internet connection (uptime in percents, max. downtime)
Tracks connection outages and drops of bandwidth
Runs on your own Windows PC as a server, to check stability of your LAN/wifi router(s)

Use cases
Selecting the fastest and most reliable internet provider - 3G, 4G LTE, wifi, satellite, ADSL, FTTx
Measuring reliability of internet connection for mission critical applications, for consumer applications (e.g. youtube)
Testing stability of wifi, LTE network adapters
Selecting best wifi/3G/4G router/modem location, best antenna orientation