Active Admin

The administration framework for business critical Ruby on Rails applications.

20 Alternatives To Active Admin

Apache Tika

Apache Tika toolkit detects and extracts metadata and text from different file types.

Celery Project

Celery is an asynchronous task queue/job queue based on distributed message passing.

DBeaver

DBeaver - Universal Database Manager and SQL Client.

DataGrip

Tool for SQL and databases

EdiFabric

EdiFabric is an EDI translator software library for .NET

Flyway

Flyway is a database migration tool.

HeidiSQL

HeidiSQL is a powerful and easy client for MySQL, MariaDB, Microsoft SQL Server and PostgreSQL. Open source and entirely free to use.
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Liquibase

Database refactoring solution.
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MongoDB Compass

The easiest way to explore and manipulate your MongoDB data
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MySQL Workbench

MySQL Workbench is a unified visual tool for database architects, developers, and DBAs.
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Open PostgreSQL Monitoring

Oversee and Manage Your PostgreSQL Servers
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PostGIS

Open source spatial database

PostgREST

Automatic REST API for Any Postgres Database

Postico

A modern PostgreSQL client for OS X

Sequel Pro

MySQL database management for Mac OS X

Slick

A jquery plugin for creating slideshows and carousels into your webpage.
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code-prettify

Code Prettify is an embeddable script that makes source-code snippets in HTML prettier.
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omnidb

An Open Source Web Tool for Database Management and Conversion
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phpMyAdmin

phpMyAdmin is a tool written in PHP intended to handle the administration of MySQL over the Web.