Open-source alternatives to Orbit Db

This project is a reactive, offline-first NoSQL database engine designed for JavaScript applications. It provides a robust framework for managing application state by synchronizing data across browsers, mobile devices, and server-side runtimes. By treating local storage as the primary source of truth, it enables applications to remain functional without network connectivity, automatically reconciling changes with remote backends once a connection is restored. The database distinguishes itself through a modular architecture that supports cross-environment synchronization and high-performance d

Gun is a decentralized graph database and synchronization engine designed for real-time, peer-to-peer data management. It functions as a JavaScript library that enables applications to maintain consistent state across distributed nodes without relying on a central server. By utilizing conflict-free replicated data types and a gossip protocol, the system ensures that data updates propagate across the network and reconcile automatically. The project distinguishes itself through a focus on decentralized identity and security, utilizing public-key infrastructure to authenticate users and sign dat

go-ipfs is an implementation of an IPFS node, providing a distributed filesystem and a content-addressable storage system. It enables the storage and retrieval of data based on unique cryptographic hashes rather than fixed network locations, allowing files to be shared across a peer-to-peer network without a central authority. The system utilizes a distributed hash table and a peer-to-peer gossip protocol to route requests and propagate network state and metadata. It organizes data using a Merkle DAG structure to support efficient deduplication and versioning of content. Capabilities include

Kubo is a peer-to-peer implementation of the InterPlanetary File System (IPFS) designed for decentralized data storage and content delivery. It uses content-addressing, directed acyclic graphs, and distributed hash tables to identify, distribute, and retrieve data across a network without relying on central servers. The project differentiates itself by providing a virtual filesystem via FUSE, which maps decentralized network namespaces to local operating system directories for direct file access. It also includes integrated HTTP gateways that translate peer-to-peer content into standard web t

a Lightweight, Permanent JSON document database

Datahaven is a decentralized storage network and smart contract platform designed for storing verifiable data with cryptographic integrity checks. It functions as a peer-to-peer system that ensures data availability and prevents loss through redundancy and tamper-evident content addressing. The project incorporates a restaking security layer that protects the network from malicious actors by leveraging economic stakes and automated slashing mechanisms. It also features a cross-chain asset bridge that transfers tokens and messages between different blockchain networks using finality proofs. T

Noms is a distributed version control database and content-addressable data store. It identifies data by cryptographic hashes to ensure integrity and deduplication, while tracking dataset state changes through a sequence of immutable commits to enable branching, forking, and historical recovery. The system functions as a peer-to-peer data synchronizer, reconciling state between disconnected database instances to ensure all nodes converge on the same data. It distinguishes itself as a schema-flexible document store that supports self-describing types, allowing schemas to evolve and widen as ne

This project is a blockchain development course and framework designed to teach the creation of decentralized applications and smart contracts. It provides a structural guide and development kit for building software that interacts with distributed ledger technology and peer-to-peer storage. The project covers the implementation of consortium blockchains for enterprise settings, where shared ledgers are managed between trusted organizations. It also includes methodologies for orchestrating private blockchains and simulating local nodes for testing applications. The capability surface extends

immudb is a tamperproof database that maintains an immutable record of entries using cryptographic commit logging. It ensures verifiable database integrity by utilizing Merkle trees to generate membership and consistency proofs that detect unauthorized data alterations. The system employs a multi-model storage engine that unifies key-value, document, and relational data structures within a single immutable backend. It provides compatibility with the PostgreSQL wire protocol, allowing it to integrate with standard SQL clients, ORMs, and database tools. The project covers broad capabilities in

java-tron is a Java implementation of a Tron blockchain full node. It provides the core infrastructure for running a network node, validating transactions, and producing blocks. The project includes a proof-of-stake consensus engine, a distributed ledger database, and a smart contract runtime to manage on-chain state transitions. The system is distinguished by its support for both full and lite node operations, utilizing state snapshots to accelerate synchronization and reduce hardware requirements. It features a multi-engine database abstraction that allows for storage migration, partitionin

Garage is a distributed object storage system that provides an S3-compatible API gateway. It is designed to synchronize metadata across distributed nodes using conflict-free replicated data types and Merkle-tree state alignment to maintain cluster-wide consistency. The system ensures data resilience through zone-aware replication, distributing data copies across multiple physical locations. It employs quorum-based request routing and versioned layout management to validate and commit cluster configuration changes. The project covers a broad range of operational capabilities, including automa

SurrealDB is a multi-model database engine designed to store and query document, graph, relational, and vector data within a single ACID-compliant platform. It functions as an AI-native data store, integrating vector search, graph traversal, and machine learning model execution directly into its query layer. By providing a unified declarative query language, the platform eliminates the need for external middleware to synchronize data across different storage models. The platform distinguishes itself through its ability to manage agent memory and complex workflows natively. It allows developer

Blinko is a personal knowledge management system and an LLM-powered knowledge base that enables users to capture and organize thoughts through a bi-directional knowledge graph. It functions as a RAG-enabled note-taking application and a self-hosted Markdown editor, allowing for the creation of permanent documentation and fleeting notes. The project distinguishes itself by integrating retrieval-augmented generation to provide conversational querying and AI-powered analysis of private document libraries. It supports both cloud-based and local AI model integration, enabling users to perform sema

Datascript is an immutable, in-memory state store and schema-based triple store. It manages application state as a versioned database, storing data as immutable facts consisting of an entity, attribute, value, and transaction. The project provides a logic engine for executing Datalog queries with support for implicit joins, recursive rules, and negation. It also features a declarative pull API for retrieving deeply nested entity graphs and related data structures. The database enforces data integrity through schema-driven constraints and attribute types. It supports atomic transactions, plug

Ceph is a unified, software-defined storage platform designed to provide object, block, and file storage services from a single distributed cluster. By decoupling data management from physical hardware, it enables elastic scaling across commodity hardware, allowing organizations to build large-scale storage infrastructure without reliance on proprietary vendor equipment. The system distinguishes itself through a shared-nothing, distributed architecture that utilizes deterministic hashing for data placement. This approach eliminates centralized metadata bottlenecks, allowing the cluster to sca

Rustfs is a distributed object storage system designed for high availability and horizontal scalability. It functions as a cluster-based platform that manages data across multiple nodes, providing a self-hosted infrastructure for large-scale storage requirements. The system is built to be container-native, utilizing an operator to automate deployment and management within orchestrated environments. It provides compatibility with standard object storage protocols, allowing existing applications and tools to interact with the storage layer through a translation interface. To ensure long-term re

IPFS Desktop is a graphical client for storing, retrieving, and managing content on a peer-to-peer network. It functions as a distributed file system manager and node administration tool, allowing users to run a local node and manage content-addressed data without using a command line. The application includes a network visualizer for monitoring connected peers and analyzing global network topology. It also serves as a system protocol handler capable of intercepting and processing ipfs and ipns URIs. The software covers decentralized file storage and distributed content hosting, featuring to

cr-sqlite is a multi-master database replication system that uses conflict-free replicated data types to ensure eventual consistency across distributed nodes. It provides the core capabilities for offline-first data synchronization, allowing multiple database instances to merge concurrent updates and reach a consistent state. The project distinguishes itself through a combination of CRDT-based data replication and a WASM-based database engine, enabling full SQL execution and state persistence within web browsers. It supports peer-to-peer replication and cross-tab synchronization, utilizing ca

This project provides a collection of conflict-free replicated data types implemented in Rust, designed to enable deterministic state synchronization across distributed systems. It functions as a framework for maintaining data consistency in decentralized environments where central coordination is absent. The library facilitates distributed state synchronization by tracking causal context and unique actor identifiers for every participant. This approach allows the system to resolve concurrent modifications through mathematical lattice structures, ensuring that all replicas converge to the sam

Owlcache is a distributed, in-memory key-value cache server written in Go. It provides a high-performance storage engine designed to maintain frequently accessed data in volatile memory, facilitating low-latency access and accelerated application performance across distributed environments. The system distinguishes itself through decentralized cluster management and real-time data propagation. It utilizes gossip-based synchronization to maintain state consistency across nodes and supports active-passive coordination to ensure high availability. The platform integrates with diverse application

nit is a blockchain asset provenance platform and decentralized asset registry. It establishes a verifiable chain of custody for digital media by assigning cryptographically unique identifiers to files and recording their origin, ownership, and modification history on a ledger. The project distinguishes itself by integrating IPFS for decentralized storage and a content versioning system that tracks asset evolution through immutable commits. It includes specialized tooling for generative AI provenance tracking, allowing the recording of creators and tools used in synthetic media to maintain a

Yjs is a CRDT framework and real-time state synchronization engine providing shared data types for collaborative software. It functions as a shared data type library of collaborative maps, arrays, and text structures that converge automatically across distributed clients, serving as a local-first data store and a collaborative editor backend. The system distinguishes itself through a synchronization engine that encodes document changes into commutative binary updates. It employs state-vector based differencing to transmit only missing incremental updates between peers and uses relative-positi

js-ipfs is an HTTP client library that connects to any IPFS daemon, enabling JavaScript applications to interact with the InterPlanetary File System. It provides a promise-based asynchronous API for managing content-addressed storage, where all data is identified by cryptographic hashes (CIDs) for immutable references and deduplication. The library communicates with a remote IPFS node through HTTP requests, supporting cancellation of in-flight operations via standard AbortController signals. The library offers a comprehensive set of capabilities for working with IPFS, including adding and ret

ipfs-desktop is a graphical application for managing a local IPFS node, hosting content, and interacting with the peer-to-peer network. It serves as a desktop client that provides a visual interface for content-addressed storage management, peer-to-peer file sharing, and the administration of the node lifecycle. The project differentiates itself by providing a comprehensive suite of controllers for node health, gateway routing, and static site hosting. It includes a dedicated content-addressed storage browser for importing and organizing files, a gateway controller to route network content th

Lux is a blockchain infrastructure project providing a distributed ledger and a smart contract platform. It utilizes a hybrid proof-of-work and proof-of-stake consensus mechanism to secure decentralized transactions and maintain network stability. The project features a peer-to-peer ecosystem that includes a decentralized file storage system for immutable data, a masternode network for governance, and a cross-chain asset bridge. It distinguishes itself with an ASIC-resistant hashing algorithm optimized for general-purpose CPUs and a decentralized order book for matching trades without a centr

Riak is a decentralized NoSQL key-value store designed for high availability and fault tolerance. It is a Dynamo-style distributed database that utilizes consistent hashing and eventual consistency to scale data across a cluster of nodes. The system functions as a geo-replicated datastore, synchronizing data across multiple physical locations to provide disaster recovery and maintain availability during regional outages. It employs a multi-master replication model, allowing writes to any node in the cluster. The platform covers broad capability areas including decentralized cluster coordinat

qBittorrent is a cross-platform desktop application designed for peer-to-peer file distribution. It functions as a BitTorrent client that manages the downloading and uploading of files across decentralized networks by utilizing a high-performance C++ library to handle protocol compliance and data exchange. The application distinguishes itself through an integrated, asynchronous event-driven architecture that supports remote management via an embedded web server. This remote interface allows users to control tasks and application settings from any location, secured by authentication, encryptio