FireSSH is a free, cross-platform SSH terminal client for Mozilla Firefox. Written entirely in Javascript!, if you are for example under windows and you want to use ssh, the best is to install this firefox extension.
You can Download Firessh from this Link.
After installation, If you want to enable/disable or to to customize firessh, go to Tools–>Add-ons and click on Preferences
Now to run the extension go to Tools–>firessh
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