Open-source alternatives to Omnigraph

Cockroach is a distributed SQL database designed to scale horizontally across multiple nodes while maintaining strict ACID compliance and global data consistency. It functions as a relational database engine that automatically partitions data into ranges, rebalancing them across a cluster to accommodate growing storage and throughput requirements. By utilizing a distributed consensus protocol, the system ensures that all nodes agree on the order of operations, providing fault tolerance and continuous availability even in the event of hardware failures. The system distinguishes itself through

See gitlab: https://gitlab.com/Project-FiFo/DalmatinerDB/dalmatinerdb

Distributed Prometheus time series database

A large-scale entity and relation database supporting aggregation of properties

InfluxDB is a specialized time series database platform engineered for the high-speed ingestion, compression, and retrieval of timestamped data at scale. It functions as a distributed metrics platform, providing the infrastructure necessary to organize and analyze massive volumes of time-stamped information to identify trends, patterns, and anomalies within complex data streams. The platform distinguishes itself through a functional dataflow engine that utilizes a specialized programming language for complex analytical transformations and automated tasks. This architecture is supported by a p

IonDB, a key-value datastore for resource constrained systems.

MySQL 资源大全中文版，分析工具、备份、性能测试、配置、部署、GUI 等

Fast scalable time series database

One database for likes, views, follows — pre-computed, served in real-time

Accumulo backed time series database

OpenTSDB is a distributed time series database and metrics engine designed for storing and managing massive volumes of high-cardinality system metrics. It functions as a data store and analytics platform that enables large-scale metric ingestion and infrastructure performance monitoring across a distributed cluster. The system distinguishes itself through a distributed storage abstraction that supports multiple backends such as HBase, Cassandra, and Google Bigtable. It utilizes a hierarchical metric tree to organize time series and employs numeric identifier indexing to reduce storage footpri

Apache Cassandra® Cluster Manager (CCM) – easily create and destroy clusters on localhost

TiDB is a horizontally scalable, distributed SQL database designed to provide consistent transactional storage and high-performance analytical processing within a single unified architecture. It utilizes a decoupled compute-storage design and a distributed key-value storage layer to ensure horizontal scalability and efficient range-based queries. By employing a consensus-based replication algorithm, the system maintains high availability and automatic failover across multiple nodes and geographical regions. The platform distinguishes itself through its hybrid transactional and analytical proc

A Bayesian database table for querying the probable implications of data as easily as SQL databases query the data itself. New implementation in http://github.com/probcomp/bayeslite

A distributed system designed to ingest and process time series data

Distributed Transactional In-Memory Database (全球首个支持分布式事务的MongoDB)

A Relational Database Backed by Apache Kafka

HyperDex is a scalable, searchable key-value store

rqlite is a distributed relational database that replicates SQLite data across a cluster using the Raft consensus algorithm. It functions as a fault-tolerant storage system that provides high availability and a web API for executing SQL queries and managing relational data without requiring native database drivers. The system distinguishes itself by using an HTTP SQL interface to expose database operations and cluster management. It features a real-time change data capture stream that pushes database mutations to external HTTP endpoints via webhooks and supports the scaling of read throughput

Scylla is a distributed wide column NoSQL database designed as a high-performance data store. It functions as a Cassandra compatible database and a DynamoDB compatible store, implementing a shared-nothing architecture built on an asynchronous event-driven framework. The system emulates cloud-based APIs to support applications built for proprietary cloud protocols and implements the Cassandra Query Language for high-throughput workloads. This allows for the migration of cloud workloads to self-hosted environments while maintaining API compatibility. The project covers distributed data storage

Project SnappyData - memory optimized analytics database, based on Apache Spark™ and Apache Geode™. Stream, Transact, Analyze, Predict in one cluster

An experimental embedded SQL engine in C++20. Query Parquet, CSV, JSON, Arrow, Avro, SQLite, and Excel files directly with SQL, in-process. Early-stage.