MariaDB is described as 'Backward compatible, drop-in replacement of the MySQL® Database Server. It includes all major open source storage engines' and is a very popular relational database in the development category. There are more than 50 alternatives to MariaDB for a variety of platforms, including Windows, Linux, Mac, Self-Hosted and Web-based apps. The best MariaDB alternative is SQLite, which is both free and Open Source. Other great apps like MariaDB are PostgreSQL, MySQL Community Edition, MongoDB and Microsoft SQL Server.
SQLite is a software library that implements a self-contained, serverless, zero-configuration, transactional SQL database engine. SQLite is the most widely deployed SQL database engine in the world. The source code for SQLite is in the public domain.
PostgreSQL is a powerful, open source object-relational database system with over 35 years of active development that has earned it a strong reputation for reliability, feature robustness, and performance.
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MySQL Community Edition is a freely downloadable version of the world's most popular open source database that is supported by an active community of open source developers and enthusiasts.
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MongoDB is a document database with the scalability and flexibility that you want with the querying and indexing that you need
SQL Server delivers on Microsoft’s Data Platform vision by helping your organization manage your data by enabling you to store data from structured, semi-structured, and unstructured documents within the database.
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Sequel Pro is a fast, easy-to-use Mac database management application for working with MySQL databases.
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The Apache Cassandra database is the right choice when you need scalability and high availability without compromising performance.
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Apache CouchDB is a distributed, fault-tolerant and schema-free document-oriented database accessible via a RESTful HTTP / JSON API. It includes incremental map / reduce mechanics for queries and keeps data safe with an append-only datastore.
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Percona Server is an enhanced, drop-in MySQL® replacement which has been downloaded more than 1,400,000 times. Percona Server is based on the Percona XtraDB Storage Engine, an enhanced version of the InnoDB storage engine for MySQL and MariaDB.
Cockroach is a distributed key/value datastore which supports ACID transactional semantics and versioned values as first-class features. The primary design goal is global consistency and survivability, hence the name.
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ArangoDB database is an open-source NoSQL solution with a flexible data model for documents, graphs, and key-values.
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DB2 offers industry leading performance, scale, and reliability on your choice of platform from Linux to z/OS. DB2 supports storing XML and relational data and offers SQL PL and PL/SQL procedural languages.
