Open Source Kotlin Backup Software

ArchiveKeep is a free, open-source file archiving application designed to preserve important data across multiple storage locations. It replicates files to external drives, local storage, and compatible cloud services without requiring proprietary archive formats. The software prioritizes nondestructive synchronization to prevent accidental deletions, corruption, or unwanted modifications from spreading between copies. Users can preview file differences before synchronizing and verify stored data using digital checksums. It supports offline storage devices that are connected only when needed. Additional options include S3-compatible storage, self-hosted servers, and per-file end-to-end encryption. Developed with Kotlin, ArchiveKeep provides graphical and command-line tools for long-term data preservation.