Top Alternatives to RethinkDB

MySQL Community Edition is the widely adopted open-source relational database management system (RDBMS). It provides a robust, high-performance, and scalable solution for various applications, from small web projects to large-scale enterprise systems. Its reliability and rich feature set have made it a cornerstone of modern data management.

SQLite is a widely adopted open-source embeddable database engine, known for its serverless architecture, zero configuration, and small footprint.

PostgreSQL is a robust, open-source object-relational database system renowned for its extensibility, standards compliance, and advanced features. It is highly regarded for its reliability, data integrity, and performance, making it a popular choice for critical enterprise applications and data warehousing.

MongoDB is a leading free and open-source NoSQL database, designed for modern applications. It offers a flexible document data model, high performance, and seamless scalability, making it ideal for various use cases from mobile to enterprise applications.

MariaDB is a robust, open-source relational database management system, forked from MySQL. It offers enhanced performance, security, and scalability, making it a popular choice for a wide range of applications, from small websites to large enterprise systems.

Redis is an open-source, in-memory data structure store used as a database, cache, and message broker. It supports various data structures like strings, hashes, lists, sets, sorted sets, and more, offering high performance and versatility for modern application development.

Microsoft SQL Server is a robust relational database management system offering industry-leading performance, security, and availability. It supports a wide range of data management and analytical applications, from small-scale departmental use to large-scale enterprise deployments.

Apache CouchDB is a schema-free NoSQL database built for reliability and scalability, particularly in offline-first applications. It emphasizes ease of use and fault tolerance by using a peer-based distribution model and a robust replication mechanism. Its HTTP-based API and JSON document format make it developer-friendly.

ArangoDB is a highly scalable, multi-model NoSQL database that natively combines document, graph, and key/value data models in a single core. It supports ACID transactions across all data types and offers robust features for developers building complex, data-intensive applications.

GridGain In-Memory Data Fabric is a comprehensive in-memory computing platform designed for high-performance, low-latency applications. It acts as a data and compute layer between applications and traditional databases, accelerating access and processing of vast amounts of data for real-time analytics, transactional workloads, and streaming data.

Oracle Database is a leading object-relational database management system renowned for its robustness, scalability, and comprehensive features catering to critical business applications and large-scale data management.

Hazelcast is a leading open-source distributed in-memory data grid and stream processing platform designed for high-performance, low-latency applications. It provides incredibly fast data access and processing by keeping data in RAM across a cluster of machines, enabling real-time responsiveness.

Couchbase is an open-source, distributed NoSQL cloud database that provides high-performance, flexibility, and scalability for modern applications, optimized for interactive systems requiring low latency and high throughput.

Apache Cassandra is a highly scalable, distributed NoSQL database designed to handle large amounts of data across many commodity servers, providing high availability without a single point of failure.

H2 Database Engine is a fast, open-source, Java-based relational database management system, ideal for embedded and stand-alone applications. It supports standard SQL and offers both disk-based and in-memory database options.

Firebird is a powerful, open-source relational database management system (RDBMS) known for its small footprint, high performance, and low maintenance requirements. It offers support for major ANSI SQL standards, making it a reliable choice for various applications from embedded systems to enterprise solutions.