+ OneLab provides users with access to <a href="http://planet-lab.eu/" target="_blank">PlanetLab Europe</a>,
+ <a href="http://nitlab.inf.uth.gr/NITlab/index.php/testbed" target="_blank">NITOS</a>,
+ and <a href="https://www.iot-lab.info/" target="_blank">IoT-LAB</a> testbeds, each of which has its own characteristics that allow users
+ to choose according to the needs of their experiments. PlanetLab Europe is an internet-overlaid platform providing 300 servers for over
+ 150 European locations, or one thousand total servers at 500 world-wide locations. NITOS wireless mobility testbeds allow users to customize
+ environmental components so as to test their experiments in real-world settings; while IoT-LAB platforms offer users over 2700 fixed or mobile
+ wireless sensor nodes in six different locations across France.