Mosh (mobile shell) for Chrome.
Install Mosh on your remote server (http://mosh.mit.edu) to use this app. Mosh for Chrome is especially useful for Chrome OS users.
Mosh provides a remote terminal session similar to ssh, but is tolerant of network issues such as latency, disconnections, and moving from one network to another. You can leave Mosh running all the time, even while your laptop is in standby, and expect your session to persist.
See the upstream Mosh project at http://mosh.mit.edu for more details.