Hackulous has an official statement on its website about the closure
The error message to users with Installous installed
Users receive an error message if they try to add the Hackulous repo on Cydia
A seemingly popular community used by iOS jailbreakers to download pirated App Store applications has shut down without any warning to users. Hackulous, the community that has ceased to exist, also had a jailbreak application for downloading and installing apps called Installous. The Cydia repository for Hackulous has also gone down, along with a site that worked with Hackulous and its app, known as Apptrackr.
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