aptly vs JSR

aptly manages Debian package repositories and publishes controlled package sets for systems that use apt. It can mirror remote repositories, maintain local repositories, pull selected package versions with dependencies, and publish repositories. Immutable snapshots can be compared, merged, filtered, searched and used to create repeatable package environments with controlled changes and rollback to earlier versions. Mirroring supports regular and flat repositories over HTTP(S) and FTP, with filters for architectures, components and packages. Packages from mirrors and local repositories are kept in a deduplicated pool that can be searched and cleaned up. Repositories can be published to local storage, Amazon S3, OpenStack Swift, Azure or JFrog Artifactory Storage, and signed with a user-provided GnuPG key. aptly is free and available as a CLI tool and HTTP REST service. Its REST API has no authentication or protection, and the embedded web server is described as unsuitable for production use.

JSR has no write-up on Specifiction yet; its figures are above.