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.

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

Delayed Job is a Ruby background-processing library designed to move long-running work out of the request cycle and into an asynchronous job queue. It was extracted from Shopify and is built around a database-backed jobs table rather than a separate queueing service. The system stores serialized Ruby objects that respond to a perform method, then workers pull and execute those jobs later. It supports priority, scheduled execution, retries, failure tracking, locking, and multiple workers across machines. Developers can enqueue explicit job objects or use send_later to delay method execution on existing objects. It is best suited for Rails and Ruby applications that need a simple, persistent background job system for emails, imports, downloads, indexing, and batch work.

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.

with_advisory_lock is a Ruby gem that provides a simple and thread-safe way to use PostgreSQL advisory locks within Ruby applications. It allows developers to wrap critical code sections with database-level locks to prevent race conditions across concurrent processes or threads. It’s especially useful in distributed systems, background job processing, or scheduled tasks where application-level mutexes aren't sufficient.

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..

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.

A software for logging flight movements on small airfields or glider sites and automatically generating statistics and log books.

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.

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.

Scalaris is a scalable, transactional, distributed key-value store. It was the first NoSQL database, that supported the ACID properties for multi-key transactions. It can be used for building scalable Web 2.0 services. Scalaris uses a structured overlay with a non-blocking Paxos commit protocol for transaction processing with strong consistency over replicas. Scalaris is implemented in Erlang.

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.

This is a recipe manager written in Ruby with MySQL database (rails) that allows easy sorting and searching using group tags. It will have integrated support for unit conversion and for the resizing of portions.

COLDIC is an integrated lexicographic platform for creation and management of electronic lexica. Generates itself automatically from a DTD with the database schema and provides human interfaces (query and insert tools) and machine interfaces(webservices)

Cedrus is a graphical administration and monitoring tool for PostgreSQL DBMS. Inspired on Oracle's Enterprise Manager, it collects useful information over one or more PostgreSQL instances, showing it in a nice interface with useful graphs and reports.

The Enterprise Data Warehouse Metadata Browser developed at the Northwestern Medical Faculty Foundation.

ErosOnRails is a framework developed for cataloging works of art in cultural heritage institutions.

Evil Seed is a Ruby tool for seeding databases with realistic, localized, and structured test data. It integrates with Rails and uses Faker, but allows more advanced customization like data relationships and repeatable sequences. It’s ideal for developers who need high-quality sample data for testing or demos.

FGL is a tightly-integrated self-contained development & execution environment utilizing best-of-breed programming tools and methodologies, optimized web/application server, highly-scalable relational/object database, and robust extension interface.

This project is an attempt to develop a system whereby existing arguments for arbitrary debates may be gathered and accessed quickly and efficiently, to prevent re-invention of common arguments.

HIPAATalk - Contains stored procedures and sample DTS packages for parsing and converting X12 to flat tables and creating HIPAA-compliant X12 files. Currently reads 820, 834, 835, 837P/I/D, 841, 997, TA1, and creates 835, 837P/I/D, 834, 277U, 997, TA1.

JarHunt is a simple Ruby/Rails app that allows you to upload and catalog jar files that you work with every day. The jar files are then searchable, making tracking down which class files belong to which java archive easy and fast.