What helpers/libraries do you find yourself using that aren't included with codeigniter?

[eluser]tomdelonge[/eluser]
What helpers/libraries do you find yourself using that aren't included with codeigniter? (What are the most common things that are helpful to you with most projects)?

[eluser]jedd[/eluser]
Actually the only one I've called in (rather than ending up writing my own helpers/libraries etc) is Sparklines .. which isn't a CI library per se, but can be dropped in just as easily as a native one.

[eluser]JasonS[/eluser]
I use Redux Auth a lot, that and a few admin classes I have written to speed up admin development.

[eluser]naren_nag[/eluser]
Datamapper Overzealous, DX_Auth, and a custom helper file with a bunch of boilerplate functions that I keep reusing.

[eluser]Michael Wales[/eluser]
I typically bring in automatic Model discovery and automatic partial view discovery on each of my projects. I wrote about these two libraries here.

[eluser]BrianDHall[/eluser]
X2 for DataMapper Overzeals Extension (DMZ). Only one I use at the moment.

[eluser]n0xie[/eluser]
Where I normally start with after a clean checkout from CI is our in-house Auth library (just because I know it by hearth), usually 3 base controllers to replace MY_Controller (front-end, back-end, admin), some custom helpers (data sanitation, date/time) I have gotten used to, an MY_Model based on this and our in-house MY_Router to have some extra routing 'magic'.

Other than that it's pretty much a basic install: usually I just extend some core feature to suit my personal preference, which is imho one of the greatest strengths of CodeIgniter in general.