iloader

Plug in an iPhone or iPad, open iloader, sign in with an Apple ID, and pick an action such as installing SideStore or LiveContainer plus SideStore; the app imports the certificate, places the pairing files automatically, and can install any IPA you supply. It also manages pairing files for apps like StikDebug and Protokolle, lists development certificates and app IDs so you can revoke them, and shows suggestions when a common error appears. Builds exist for Windows, macOS and Linux, each needing usbmuxd (iTunes provides it on Windows). The maintainer states that the GitHub repository and iloader.app are the only official download sources, with Homebrew, AUR and Fedora COPR packages maintained by the community.