SQLite is a software library that implements a self-contained, serverless, zero-configuration, transactional SQL database engine.
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Firebird – relational database
Firebird is a relational database offering many ANSI SQL-99 features. Firebird provides excellent concurrency, and high performance.
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LucidDB – RDBMS purpose-built entirely for data warehousing and business intelligence
LucidDB is a Database Management System (DBMS) optimized for business intelligence.
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H2 – relational database management system written in Java
H2 is a relational database management system written in Java. It can be embedded in Java applications or run in client-server mode.
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HSQLDB – Java database
Hyper Structured Query Language Database is an SQL relational database management system written in Java. It has a JDBC driver conforming to ANSI SQL:2008.
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Apache Derby – relational database implemented entirely in Java
Apache Derby is a full-featured, open source relational database management system (RDBMS) that is based on Java and SQL.
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OpenLink Virtuoso – middleware and database engine hybrid
OpenLink Virtuoso is a middleware and database engine hybrid that combines the functionality of a traditional RDBMS, ORDBMS, virtual database
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CUBRID – relational database management engine, with built-in enterprise grade features
CUBRID is engineered as a completely free, open-source relational database management engine, with built-in enterprise grade features.
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Drupal Webform – build any type of form
Drupal Webform allows you to build any type of form to collect any type of data, which can be submitted to any application or system.
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Form Tools – powerful flexible PHP/MySQL script
Form Tools is a powerful, flexible, PHP/MySQL script you install on your website for managing your forms and data.
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EUSurvey – online survey-management system
EUSurvey creates online surveys and forms. Create official surveys of public opinion and forms for internal communication / staff management.
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Yakforms – easily create forms for your community
Yakforms allows you to host a full-fledged online form service. Edit and publish forms easily, collect and analyze submissions online.
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Nextcloud Forms – self-hosted simple surveys and questionnaires
Nextcloud Forms lets you can create as many forms, with as many questions, and shared with as many people as you like – without limitations.
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LimeSurvey – online survey tool
LimeSurvey is survey software. Advanced features like branching and multiple question types make it a valuable partner for survey-creation.
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OhMyForm – create stunning mobile-ready forms, surveys and questionnaires
OhMyForm is a form builder similar to Google Forms or TypeForm. It’s written in Python.
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