The Sileo package manager has long carried the stigma of being exclusive to specific jailbreaks – namely those created by CoolStar-led development teams such as Chimera for iOS 12, Odyssey for iOS & iPadOS 13, and Taurine for iOS & iPadOS 14.
Third-party ports to permit Cydia and Sileo on the same device have always existed, such as the now legacy Diatrus installer and the more recent Bingner installer. The Oydssey Team even went as far as to create an Odysseyra1n script that could turn a checkra1n’d handset into a quasi-Odyssey device with the procursus bootstrap and the Sileo package manager; the latter was especially popular given the length of time it took for an inclusive iOS & iPadOS 14 jailbreak to surface.