I know that there are several Firefox plugins that are invaluable for development. What plugins exist that are useful for system administration, monitoring, and the like? What plugins make your day-to-day job as a system or network administrator easier?
ShowIP – allows me to see quickly the IP address of the server where a particular website is hosted. Assists in managing my many clients websites.
DNSCache – quickly disable/re-enable Firefox’s builtin DNS Cache, particularly good if your also manipulating the site’s DNS at the time
ScreenGrab – particularly good at capturing that error and sending to the developers.
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