What the Cydia is ?
Cydia is a software application for iDevices that allows you to add other applications to your iPhone, iPad or iPod touch. Also it helps you to find and install software packages (including apps, interface customizations, and system extensions) on a >Jailbroken< iOS.
But Cydia it's just like the appstore, it allows you to find free apps while it offering you an apps and themes for sale ! but there is a way to find what ever you want on cydia for free !
Adding next sources on cydia will be very helpful :
On your Jailbroken iOS :
Cydia > Manage > Sources > Edit > Add :
>>repo.insanelyi.com
>>Repo.beyouriphone.com
>>sinfuliphonerepo.com
>>cydia.xsellize.com
>>cydia.install0us.con
>>cydia.hackulo.us
>>ihackmyi.com/cydia
>>sinfuliphonerepo.com
>>cydia.xsellize.com
>>cydia.install0us.con
>>cydia.hackulo.us
>>ihackmyi.com/cydia
Adding thoses sources, allows you to gest best iOS software apps ever ;) for FREE.
Best Cydia's apps :
# Intelliscreen X
Features:
- View Calendar, Email, Text Messages, News, Facebook, Twitter, Weather, and more from your iPhone "Slide To Unlock" screen
- Taskbar Icons for Missed Email, SMS, Phone calls, and Silent status
- QuickView/Preview Entire Email
- View/Mark Read/Unread/Delete your Emails from the Lock Screen
- Reply to SMS/iMessages with Message+ (free)
- Completely integrated into iOS5 Notification Center
- Integrated Twitter and Facebook pages
- Post/Comment/Tweet from anywhere
- Access QuickSettings like brightness, airplane mode, Bluetooth +
- Advanced RSS Reader uses iOS 5 Reader to show "just" news
- Can "pull down" and display in any app!
# Protube
- This application allows you to end all apps when it comes to customizing.
# UnlockFX
# Callbar for IOS5 
-Compatible for both phone and facetime, sky, viber video calls
-Supports all iDivices on all frimwares
-Settings for CallBar can be found in the Setting.app or in the CallBar app on the homescreen.
-The CallBar User Guide and FAQ is located in the CallBar section.
# BeyondSMS
# Recludo
