Open Source Ruby Database Software

Grafana OSS is the leading open-source platform for visualization and observability. It enables teams to query, visualize, alert on, and explore telemetry data from multiple sources in a single interface. With support for 100+ data source plugins—including Prometheus, Loki, Elasticsearch, InfluxDB, SQL/NoSQL databases, and OpenTelemetry—Grafana helps teams correlate metrics, logs, and traces across applications and infrastructure. Users can build interactive dashboards with rich visualizations, template variables, and reusable panels to monitor systems and troubleshoot issues in real time. Grafana includes capabilities such as ad hoc data exploration, alerting, annotations, and flexible query support. Its extensible plugin ecosystem integrates with cloud platforms, databases, and developer tools—allowing teams to build observability workflows without vendor lock-in. The easiest way to get started with Grafana is with Grafana Cloud, our fully managed, full-stack observability platform.

Logstash is a server-side data processing pipeline that dynamically ingests data from numerous sources, transforms it, and ships it to your favorite “stash” regardless of format or complexity. It supports and ingests data of all shapes, sizes and sources, dynamically transforms and prepares this data, and transports it to the output of your choice. Logstash is extensible, with over 200 plugins available to let you create and configure your pipeline how you choose.

Maybe is an open-source personal finance and wealth management application designed to help users manage their finances effectively. Originally developed as a comprehensive platform, it included features like connecting with certified financial advisors. Although the commercial venture was discontinued, the source code remains available for the community to explore and build upon.

Motor Admin is a no-code admin panel that can be deployed for any application in under a minute. It allows users to search, create, update, and delete data entries, create custom actions, and build reports without writing code.

The MongoDB Ruby Driver is the official MongoDB client for Ruby applications, providing an idiomatic API to interact with MongoDB databases. It enables seamless integration with Ruby on Rails and other Ruby-based frameworks for NoSQL data management.

A flexible, Ruby-based data-mapping and persistence toolkit, designed as an alternative to traditional ORMs.

pg_easy_replicate is a simple tool for replicating PostgreSQL data from one database to another using logical replication. It abstracts away the complexity of publication/subscription setup and enables selective table replication. Ideal for developers or data engineers who want quick replication without deep Postgres expertise.

Easily create living style guides/front-end style guides/pattern libraries by adding Markdown documentation to your Sass project. By clicking the color swatch in the style guide, users can copy the hex code of the color (useful for designers). When pointing the cursor on the variable name, it will be copied on click instead (useful for developers). The output will respect newlines. You can add any CSS to each example if it helps to make it better in the style guide only. You can set options to apply to all commands or all commands giving a name. This is useful when you depend on Haml or other templating engines. If you want your style guide to work as an API, you might have views already written somewhere else and don’t want to write the same HTML code into the style guide.

Textacular is a full-text search extension for ActiveRecord models in Ruby on Rails, built on top of PostgreSQL's native full-text search features. It allows developers to perform natural language searches across multiple columns with minimal configuration, providing a powerful and efficient alternative to third-party search services. Textacular integrates seamlessly with Rails queries and scopes for a smooth developer experience.

pg-osc (Online Schema Change) is a CLI tool for making non-blocking schema changes to large PostgreSQL tables. It creates a shadow table, copies data incrementally, and swaps tables with minimal downtime. Ideal for high-traffic applications, pg-osc lets teams modify database structures safely in production environments.

Redland is a set of object-based, modular and portable C RDF libraries providing RDF APIs for the graph, triple storage (librdf), RDF/XML parsing and serializing (Raptor), SPARQL RDF querying (Rasqal). Language APIs in Perl, PHP, Python, Ruby and others.

LiteSQL is a codegenerator and C++ library that integrates C++ objects tightly to relational database and thus provides an object persistence layer. LiteSQL supports SQLite3, PostgreSQL, MySQL and oracle as backends.

Tokyo Cabinet is the successor of QDBM, a high performance database library similar to the DBM family. It also supports hash and B-tree databases and does not require any server process. The overall speed is improved compared to QDBM.

DataVision is a reporting tool similar to Crystal Reports. DV supports many data sources (JDBC, files) and many output formats (HTML, XML, PDF, LaTeX, Excel, delimited files, DocBook). DV includes a GUI editor. DV is embeddable. Reports are XML-based.

QDBM is a library of routines for managing a database. It is developed referring to GDBM for the purpose of the following three points: higher processing speed, smaller size of a database file, and simpler API..

The YALTools is a set of command line tools written in ruby for CouchDB. It provides a unix like command set, mkdb, rmdb, lsdbs, lsdocs, putdocs, csv2json, and more. It aims to provide a power of filters and pipes in *NIX environment.

Law Leecher is a multi-threaded web crawling tool which extracts laws from the EU law database PreLex (http://ec.europa.eu/prelex/). It's written in Ruby.

mx is a Ruby/Rails code base with broad application in evolutionary biology, it includes general functionality for matrix handling, sequence management, ontology construction, specimen handling, taxonomic catalogs, taxonomic descriptions and more

TaminoOnRails provides a Ruby-based DBMS adapter as well as a ActiveResource adapter for Software AG's XML database management system Tamino. With the help of these adapters Tamino users can easily create web-based frontend for their XML datasets.

The Wedgetail project provides the basis for a shared electronic health record. The project provides a schema for an SQL implementation of a sharedEHR, as well as the tools required to interact securely with the database.

Displays/manages exercise data like speed, time, heart rate etc. Import from Garmin "Forerunner"-devices and export of the track-data to Google Earth is possible as well.

Address WebBook is simple web application programmed in Ruby on Rails with possibility of categorizing posted people.

Web application to show information about empty homes. Some statistics can be gathered for each city, search homes, comment them, etc.

Blazer is a business-intelligence engine for Rails that lets teams write SQL in the browser, visualize the results, and share insights without leaving their app. It turns raw database queries into charts, tables, and dashboards, so non-engineers can explore data with minimal friction. Queries can accept parameters, enabling reusable reports for different time ranges, segments, or customers. Access controls and audit trails help teams manage who can run, edit, or view sensitive analyses. Scheduled checks and alerts turn BI into proactive monitoring by notifying you when metrics cross thresholds or regress. Because it’s a Rails engine, it integrates into your app’s authentication, layouts, and deployment workflows, reducing the overhead of maintaining a separate BI stack.