Firebird is described as 'Relational database offering many ANSI SQL-92 features that runs on Linux, Windows, and a variety of Unix platforms. Firebird offers excellent concurrency, high performance, and powerful language support for stored procedures and triggers' and is a relational database in the development category. There are more than 25 alternatives to Firebird for a variety of platforms, including Windows, Linux, Mac, Web-based and Self-Hosted apps. The best Firebird alternative is SQLite, which is both free and Open Source. Other great apps like Firebird are PostgreSQL, MySQL Community Edition, MongoDB and Microsoft SQL Server.
An embedded database built on object storage. Unlike traditional LSM-tree storage engines, SlateDB writes data to object storage to provide bottomless storage capacity, high durability, and easy replication.
Titan is a scalable graph database optimized for storing and querying graphs containing hundreds of billions of vertices and edges distributed across a multi-machine cluster. Titan is a transactional database that can support thousands of concurrent users executing complex graph...
dbHarbor is more than just database management tool. It gives developers and database administrators one place to design, implement and test databases.
H2 is a relational database management system written in Java. It can be embedded in Java applications or run in the client-server mode. The disk footprint (size of the jar file) is about 1 MB.
SQLGate is an integrated database management and development solution that simplifies the construction and operation of databases. A solution that fits different types of databases, SQLGate is customized for seven different databases that make up 83.2% of the DBMS market.
HSQLDB (Hyper Structured Query Language Database) is a relational database management system written in Java. It has a JDBC driver and supports a large subset of SQL-92 and SQL:2008 standards. It offers a fast, small (around 1300 kilobytes in version 2.
An embedded transactional graph engine for Python backed by a LMDB file. Works with Python 2.6, 2.7 and 3.x.
CUBRID is a comprehensive GPL/BSD open source relational database management system highly optimized for Web Applications. CUBRID is being developed in C/C++. Includes native HA, online hot backup, and other features. JDBC, PHP, ODBC/.NET, Ruby & Python APIs.
HBase is an open source, non-relational, distributed database modeled after Google's BigTable and is written in Java. It is developed as part of Apache Software Foundation's Apache Hadoop project and runs on top of HDFS (Hadoop Distributed Filesystem), providing...
OrbitDB is a serverless, distributed, peer-to-peer database. OrbitDB uses IPFS as its data storage and IPFS Pubsub to automatically sync databases with peers. It's an eventually consistent database that uses CRDTs for conflict-free database merges making OrbitDB an excellent...
LiteDB is an open-source, MongoDB-like database that requires no configuration and is mobile-ready. It's a serverless database delivered in a single DLL under 450kb, fully written in .NET C# managed code and compatible with .NET 4.5 and NETStandard 2.0.
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