Note: You need to Jailbreak your iOS device in order to use Cydia. Checkout this article on how to jailbreak your device easily. After jailbreaking your device check these list of cydia sources to get awesome games apps and tweaks for your iOS device.

iSpazio.net
Source @ http://repo.ispazio.net
It contains lot many free apps, games, tweaks, mods, and most important themes that you can’t find anywhere else.

Repo : BiteYourApple.net
Source : http://repo.biteyourapple.net
It is one of the best Italian Cydia source that comes with ringtones, funny tweaks, mods and many more.

HackYouriPhone
Source @http://repo.hackyouriphone.org/‎
Its another repo developed in Italian language. It hosts wide ranges of mods, apps, utilities for iPhone 5S, 5C, 5, 4S, 4, 3GS. iPod 5G, 4G, 2G etc.

Rpetri.ch
Source @ http://rpetri.ch/repo/
Ryan Petrich is the developer of Boolean Magic and offers dozen of intelligence and useful tweaks, mods including popular DisplayRecorder, HapticPro, BrowserChooser, VideoPane, Luna, Activator, Grabby, TweakWeek and many more. He regularly update and add new tweak, So worth trying them.

Repo Name: Insanlyi.com
Source @ http://repo.insanelyi.com
It comes with more than 7000 different themes, apps and tweaks, So start browsing them for your iDevice now.

Repo : Xsellize
Source @http://cydia.xsellize.com
When we compile top repo list, How can we forget to add xSellize. It is the freely available source features hundreds of apps, fonts, games, graphix, modz, tonez and many more you will find under their section page after installation.

Repo name : iHackstore
Source @http://ihackstore.com/repo
It contains lots of ringtones, mods, themes and worth trying tweaks.

Repo : ThemeItApp
Source @http://www.themeitapp.com/repo/
Recently, Their official url changed to fif7y.com. Its leading iPhone Theme store that allow you to completely modify the look of your iPhone with different icon sets, colors and themes.

iHacks
Source @http://ihacksrepo.com
It contains lots of cracked cydia apps and add-on that you must try on your iDevice to improve it function.

Intelliborn
Source @http://intelliborn.com/cydia
One of the most popular repo that contains few worth and innovative application. All of their apps comes with free trial including My3G, MyWi 6.0, IntelliScreenX, IntelliID.

Top Cydia Repos

BigBoss
Source: http://apt.thebigboss.org/mobileweb/index.php

BigBoss is the single largest source of most popular tweaks. You’ll find most of the popular iOS 7 tweaks showing up on BigBoss. Developers submit their tweaks here to reach a wide audience. The tweaks in BigBoss are usually checked for inconsistencies etc. This comes as a default repo with Cydia but you can remove it. Well, removing it doesn’t make any sense though.

ModMyi
Source: http://apt.modmyi.com/

Right next to BigBoss, it’s ModMyi (although some folks would argue the opposite). ModMyi hosts a lot of tweaks too, many of them insanely popular. ModMyi also comes with a lot of mods too although it would be less interesting than the tweaks themselves.

Rpetri.ch
Source: http://rpetri.ch/repo/

Ryan Petrich is a lead developer when it comes to intelligent, smart and ingenious tweaks. He is the guy behind tweaks like DisplayRecorder, BrowserChooser. We hear he’s got a lot of new stuff on the works for iOS 7 and it would be pretty interesting to test them out. This is a must-have repo for everyone interested in Cydia tweaks.

iSpazio
Source: http://repo.ispazio.net

iSpazio is a good source for tweaks, mods and other things. As the community develops compatibility and stability for iOS 7 tweaks, I expect iSpazio to feature new tweaks and mods that would work on iOS 7 devices.