Mods, themes or tweaks? Stop looking elsewhere, the following list contains almost anything you could wish for:
BigBoss – the largest repo, comes as default and is on the Cydia market
ModMyi – another default repo.
Intelliborn – the crib of the top tweaks for users IntelliscreenX, MyWi, My3G and IntelliID. Regularly updated for more.
Insanelyi – allows you to choose from more than 7000 unique apps, tweaks and themes, no wonder it’s one of the very popular app among users.
iHacks - Want more function to your apps? This repo cracks apps and gives you tweaks, but also a number of add-ons for an upgrade.
iCause FX – customize and modify your device with countless mods and tweaks from this repo.
iHackstore – home of the most commonly used mods, apps and tweaks you can find on Cydia.
iF0rce – quality before quantity? This repo has a small number of tweaks, but they include AirBlue Sharing and AirBlue GPS.
BiteYourApple – looking for entertainment and good looks? The popular choice is this repo providing anything lacking a real use: ringtones, other tweaks or mods.
iSpazio – with the same features as the previous repo, it has a history of pirate apps, but has since then recovered and is safe for use.
ThemeItApp – want to modify the look of your device? The successful ThemeIt belongs to this repo with 3 default packages.
iCydiaBlog - all cydia sources ios 8 available in one place @iCydiablog.com (tweaks/apps/downloads/jailbreak)
Rpetri.ch – need Chrome or BrowserChooser? This repo has them and it adds more tweaks at a regular basis.
HackYouriPhone – home not only for pirate apps, but also for some real and pretty good ones.
SinfuliPhoneRepo – if you are into AppSynch, like so many others, here is where you find it, among other fake or strange apps.
Xsellize – for use emulators, this app offers ROM packages in bulks, along with many other cracked apps.