Written and maintained by the same developer as Akeeba Backup and the Joomla! updater component of Joomla! 2.5.4 and later.
Note: a commercial edition (Admin Tools Professional) with extra security-oriented features is also available from our site for a fee. This listing is about the free version, Admin Tools Core.
Note 2: The software is free of charge, its support is not. You need a valid subscription (starting at EUR 7.79) to request support. However, its documentation, the troubleshooting wizard and searching the forum is free.
I love it! Installed without a hitch. It let me know there was an update available. It downloaded and installed it.
Of course I've noticed Joomla 2.5 has updating built in. I'm happy to see Joomla is up with the times of built-in automated updates/update notification.
Also it was very helpful for upgrade Joomla 1.6, 1.7 while with standard Joomla update process there where sometimes problems.
Next important feature was update notification in Control Panel.
In Joomla 2.5 there were many improvements but Admin Tools is still helpful.
There are a HANDFUL of extensions I don't leave home without - maybe 6 all up. This is one of them (although I use admin tools pro lately!). Another in that list is Akeeba Backup, by the same developer. Admin Tools and Akeeba go into every site I build, without question.
Consistent across platforms: check
Well documented: check (seriously well documented.)
Support: triple check
Nick routinely assists people with major site issues even though they are nothing to do with his extensions. The level of support is amazing.
Not only that, the self service documentation and trouble shooters are superb.
Product updates are constant and the extension does exactly what it says it does. I put up 2 test sites with Admin Tools "just to see" one day - they averaged 15 hack and probe attempts PER DAY for 3 weeks.
Get admin tools. Secure yourself. Make it easier to manage websites. And get back to the fun stuff, like building websites...instead of screwing around with security.