Open-source alternatives to Duplicacy

Kopia is a backup utility designed to create encrypted, deduplicated, and compressed snapshots of files and directories. It functions as a client-side tool that secures data locally before transmitting it to various storage targets, ensuring that sensitive information remains protected throughout the backup process. The system utilizes content-addressable block storage and metadata-driven versioning to identify and remove redundant data across multiple snapshots. By employing a pluggable storage abstraction layer, it supports a wide range of local, network, and cloud-based storage providers,

Pika Backup is a desktop utility for Linux that provides a graphical interface for managing file archiving tasks. It facilitates the creation of encrypted, deduplicated, and incremental backups to both local and remote storage destinations, ensuring data redundancy and protection against hardware failure. The application functions as a desktop client for the underlying storage engine, allowing users to schedule recurring backup operations and manage snapshots through a native interface. It integrates with system services to handle background task orchestration, power management, and hardware

Databasus is a self-hosted backup platform that automates PostgreSQL backups, verifies their restorability, and stores them across multiple destinations while managing team access with role-based permissions. It combines on-the-fly AES-256-GCM encryption, cron-driven scheduling, job-queue-based verification, multi-destination storage, WAL streaming, throwaway container restore testing, and workspace-based role access control into a unified backup system. The platform distinguishes itself through automatic backup verification that restores each backup into a temporary database container for in

Android-DataBackup is a rooted Android backup tool that backs up and restores complete application data on devices using Magisk, KernelSU, or APatch. It operates as a root-based backup manager, executing commands through a root shell to bypass Android's sandboxing and access app-specific data directories directly. The tool integrates with Magisk, KernelSU, and APatch to gain root-level access for reading and writing protected application data directories. It compresses backup data into tar archives to preserve file permissions, ownership, and directory structure for reliable restoration, whil

Duplicati is a self-hosted backup server designed to perform encrypted, incremental, and compressed backups to a wide range of local, network, and cloud-based storage providers. It functions as a background service that automates recurring data protection tasks, ensuring that only changed data blocks are stored to maximize efficiency and minimize bandwidth usage. The project distinguishes itself through a centralized management console that allows for the orchestration of multiple distributed backup agents from a single web-based dashboard. It supports multi-tenant management, enabling the or

Dropbox-Uploader is a Bash-based command-line client for managing files on Dropbox. It provides a full set of file operations including upload, download, copy, move, rename, delete, directory creation, and listing, all through shell scripts that use curl to interact with the Dropbox API. The tool authenticates via OAuth tokens and includes a chunked upload mechanism for handling large files reliably. The project distinguishes itself with an interactive shell interface that lets users browse and manage remote files without re-entering commands, and a file-name-based password derivation system

Borg is a command-line backup utility designed for deduplicated data archiving and secure storage. It functions by identifying unique file chunks and applying compression to minimize the total storage footprint across multiple backup versions. The software distinguishes itself through the use of authenticated encryption, which ensures that all stored data remains confidential and protected against unauthorized tampering. It also provides a virtual filesystem interface, allowing users to mount archives as local directories to browse and access individual files without performing a full restora

This is a Laravel package that creates and manages automated backups of application files and databases. It orchestrates backup, cleanup, and notification steps as a configurable pipeline, compressing selected directories and database dumps into zip archives that can be stored on any Laravel filesystem disk. The package provides a configurable retention policy engine that prunes old backups based on age, count, or size thresholds, and includes a health-check monitoring system that verifies backup recency and storage capacity. It fires success, failure, and health-check events that route notif

AliSQL is a fork of MySQL by Alibaba that extends the relational database management system with enhancements for high performance, scalability, and enterprise-grade availability. It retains the core MySQL identity as a SQL-based database for storing, organizing, and retrieving structured data, while adding optimizations for large-scale transactional and analytical workloads. The project differentiates itself through a set of Alibaba-specific improvements, including a columnar engine for accelerating analytical queries directly on MySQL tables, and a distributed, shared-nothing NDB Cluster en

Boto3 is the AWS SDK for Python, providing a programmatic interface for managing and automating AWS cloud infrastructure and services. It serves as a cloud management API client and resource manager for provisioning, configuring, and scaling virtual servers, databases, and storage. The library enables the implementation of infrastructure-as-code through declarative templates and scripts, allowing for the deployment of identical resource stacks across multiple accounts and geographic regions. It also provides a framework for coordinating distributed workflows, serverless functions, and contain

This project is a comprehensive educational resource and curriculum focused on site reliability engineering, distributed systems, and infrastructure operations. It provides technical guides, a systems engineering course, and instructional manuals designed to teach the principles of managing large-scale computing environments. The curriculum covers high-level architectural design for scalability and resilience, including fault-tolerant infrastructure, high-availability patterns, and microservices decomposition. It emphasizes the practical application of site reliability engineering through the

Container-db-backup is a container-native utility designed to automate database maintenance, including recurring backups, data restoration, and secure archiving. It operates by executing isolated backup jobs within ephemeral containers, ensuring consistent environments for data protection workflows across multiple database hosts. The tool distinguishes itself through a pipeline-oriented processing model that streams database dumps through compression and encryption stages before storage. It supports flexible storage configurations, allowing data to be directed to local filesystems or remote S

SeaweedFS is a fast distributed storage system for blobs, objects, files, and data lake, for billions of files! Blob store has O(1) disk seek, cloud tiering. Filer supports Cloud Drive, xDC replication, Kubernetes, POSIX FUSE mount, S3 API, S3 Gateway, Hadoop, WebDAV, encryption, Erasure Coding. Enterprise version is at seaweedfs.com.

Webmin is a web-based administration interface for Unix systems. It provides a centralized console for managing the full range of server administration tasks — users and groups, software packages, storage, network configuration, system services, and security — all through a browser. Its modular architecture allows separate modules to handle databases (MySQL, MariaDB, PostgreSQL), web servers (Apache), DNS (BIND), email (Sendmail, Dovecot), file sharing (Samba, NFS), and more, with a unified access control system that restricts what each administrator can see and do. What sets Webmin apart is

LXD is a unified platform for managing both system containers and virtual machines through a single REST API and command-line interface. It provides a programmatic HTTP interface for controlling the full lifecycle of instances, enabling automation and integration with external tools. The system runs unprivileged containers with per-instance UID/GID mappings, seccomp filters, and AppArmor profiles for kernel-level isolation, while supporting multiple storage backends including directory, Btrfs, LVM, ZFS, Ceph, LINSTOR, and TrueNAS through a unified driver interface. The platform distinguishes

Kubernetes-based, scale-to-zero, request-driven compute

rsync is a file synchronization and transfer tool that copies data between local and remote systems by sending only the differences between source and destination files. It computes matching blocks using checksums, so only the unmatched portions of files are transmitted, making repeated synchronizations much faster than full copies. The tool preserves file metadata such as ownership, permissions, and modification times during transfers. rsync supports multiple transfer methods, including direct connections through a dedicated daemon mode or via remote shells like SSH. It can mirror directory

This project is a set of instructional resources and step-by-step guides designed for learning version control fundamentals and collaborating via remote hosting platforms. It provides a comprehensive tutorial for using Git and GitHub to manage code versions and track project history. The materials include a practical walkthrough of the GitHub workflow, specifically focusing on forking, cloning, and pushing changes to remote repositories. These guides serve as a learning resource covering both basic and advanced operations for managing file changes. The content covers core version control ope

This project is a native implementation of the Git version control system for Go applications. It provides a programmable API and a low-level plumbing toolset that allows developers to manage repositories, manipulate object graphs, and perform version control operations without requiring external system binaries or C bindings. The library is distinguished by its flexible storage and network layers, featuring a virtual file system that enables in-memory repository management to bypass disk I/O. It supports pluggable network transports and interface-based storage backends, allowing for custom p

elFinder is a JavaScript-based web file manager that provides a browser interface for organizing and manipulating files and folders on remote servers. It functions as a backend-agnostic storage interface, utilizing a common API and a JSON-based protocol to translate browser requests into various server-side language commands. The system decouples the front end from physical storage through a multi-backend interface and volume-driver abstraction. This allows the file explorer to connect to different server-side languages and storage volume drivers to manage data across diverse environments. T

This project is an educational resource providing a detailed command reference, tutorial collections, and structured guides for mastering version control. It serves as a set of Chinese language tutorials based on international community best practices, designed to help users learn both the core concepts and practical applications of Git. The resource focuses on specific workflow guides for managing feature development, release cycles, and collaborative forking strategies. It pairs theoretical version control concepts with practical command-line examples to demonstrate real-world application.

This is a structured, gamified learning resource for Git and GitHub. It guides learners through code versioning fundamentals using a progression of themed levels and achievements, covering everything from initial repository setup to advanced collaboration workflows. The material is organized around core Git concepts such as branch isolation, commit snapshots, pull request workflows, remote synchronization, and stash management, all supported by a structured glossary of versioning terms. The project distinguishes itself by teaching Git and GitHub workflows through a hands-on, achievement-based

GitPython is a Python library that provides a programmatic interface for interacting with Git repositories. It functions as a version control API and a wrapper that allows for the execution of Git commands and the manipulation of repository commits, branches, and working trees. The project acts as a Git object manipulator, allowing users to inspect and modify internal data structures and blobs. It provides a structured layer for executing command line instructions with integrated error handling and data retrieval. The library covers a wide range of capabilities including repository initializ

This project is a comprehensive educational resource and guide for learning the Git version control system. It serves as a technical documentation source for a textbook that explains the fundamentals, advanced workflows, and internal architecture of Git. The project is structured as a multi-format e-book, with source files designed to be compiled into various digital publication formats, including HTML, PDF, EPUB, and Mobi. It utilizes a dedicated build pipeline to generate and validate these documents. The content covers a broad range of version control capabilities, including history manip

This utility is a command-line tool designed to create incremental, time-stamped snapshots of local or remote data. It functions as a shell-based orchestrator that coordinates system utilities to maintain versioned file archives, allowing for the restoration of specific data states without the need for proprietary software. The tool distinguishes itself by using filesystem hard links to reference unchanged files across multiple snapshots, which minimizes storage consumption while keeping each backup directory structure independent. It incorporates a dedicated retention manager that automatica

This project is a pure Go implementation of the Git version control system, providing a library for integrating versioning and history analysis into applications. It functions as a complete repository manager and object store that does not require external binary dependencies. The implementation utilizes interface-based storage, allowing repositories to be managed on disk or entirely in memory. It supports a transactional storage model to ensure atomic operations and implements a content-addressable storage system using delta-compression packfiles. The library covers a broad range of version