Distributed database ecosphere
The open big data serving engine
Apache Impala
DLE provides blazing-fast database cloning to build dev environments
Easy to use open source fast database for search
A high performance Node.js Redis client
Apache IoTDB
Text-based user interface to query data on Oracle DB in a smart way
Deductive Database with Datalog, SQL, RA, TRC, DRC
Relational database replication tool based on XML Schema
CursusDB is an open-source distributed in-memory database
An easy way to manage SQLite databases and query CSV files
A GUI program for inspecting and editing RDF.
C++ wrapper for Redland librdf
Online bibliographic manager for research groups. Zotero-compatible.
SQL builder and query library for golang
Small local JSON database powered by Lodash
The open-source database for the realtime web
Qvu Data Service is an ad-hoc query, reporting and api data service
A fast, low memory, transactional, index, query enabled NoSQL database
A graph database as a Redis module
Crystal ORM using ActiveRecord pattern with flexible query DSL