jpgcrunk is a tool for crunking images.

Binci is a utility that allows you to easily containerize your development workflow using Docker. Simply put, it's like having a cleanroom for all of your development processes which contain services (like databases) without needing to setup and maintain these environments manually.

Telepresence, in conjunction with a containerized development environment, gives the developer a fast development workflow in developing a multi-container application on Kubernetes. Telepresence lets you run a Docker container locally, while proxying it to your Kubernetes cluster.

The OpenSCAP ecosystem provides multiple tools to assist administrators and auditors with assessment, measurement, and enforcement of security baselines. We maintain great flexibility and interoperability, reducing the costs of performing security audits.

PostgreSQL Database Modeler is an open source data modeling tool designed for PostgreSQL. No more DDL commands written by hand let pgModeler do the job for you! This software reunites the concepts of entity-relationship diagrams and the features that PostgreSQL implements as extensions of SQL standards.

Eclipse Che is a developer workspace server and cloud IDE built for teams and organizations.

Interactive cli tool for HTTP inspection

Wuzz command line arguments are similar to cURL's arguments, so it can be used to inspect/modify requests copied from the browser's network inspector with the "copy as cURL" feature.

A tool for managing JavaScript projects with multiple packages.

Free multi-platform database tool for developers, SQL programmers, database administrators and analysts. Supports all popular databases: MySQL, PostgreSQL, MariaDB, SQLite, Oracle, DB2, SQL Server, Sybase, MS Access, Teradata, Firebird, Derby, etc.

pg_chameleon is a MySQL to PostgreSQL replica system written in Python 3. The tool can connect to the mysql replication protocol and replicate the data changes in PostgreSQL. Whether the user needs to setup a permanent replica between MySQL and PostgreSQL or perform an engine migration, pg_chamaleon is the perfect tool for the job.

pgloader loads data into PostgreSQL and allows you to implement Continuous Migration from your current database to PostgreSQL.

pgLoader has two modes of operation. It can either load data from files, such as CSV or Fixed-File Format; or migrate a whole database to PostgreSQL.

pgLoader supports several RDBMS solutions as a migration source, and fetches information from the catalog tables over a connection to then create an equivalent schema in PostgreSQL. This means that you can migrate to PostgreSQL in a single command-line!

Infinite ASCII diagrams, save to Google Drive, resize, freeform draw, and export straight to text/html.

Sonar is a platform for debugging mobile apps on iOS and Android. Visualize, inspect, and control your apps from a simple desktop interface. Use Sonar as is or extend it using the plugin API.

Free wireframing online tool

The quick and simple editor for cron schedule expressions.

Crunch is a tool for lossy PNG image file optimization. It combines selective bit depth, color type, and color palette reduction with zopfli DEFLATE compression algorithm encoding using the pngquant and zopflipng PNG optimization tools.

mountebank is the first open source tool to provide cross-platform, multi-protocol test doubles over the wire. Simply point your application under test to mountebank instead of the real dependency, and test like you would with traditional stubs and mocks.

BackstopJS automates visual regression testing of your responsive web UI by comparing DOM screenshots over time.

Zipkin is a distributed tracing system. It helps gather timing data needed to troubleshoot latency problems in microservice architectures. It manages both the collection and lookup of this data. Zipkin’s design is based on the Google Dapper paper.

Applications are instrumented to report timing data to Zipkin. The Zipkin UI also presents a Dependency diagram showing how many traced requests went through each application. If you are troubleshooting latency problems or errors, you can filter or sort all traces based on the application, length of trace, annotation, or timestamp. Once you select a trace, you can see the percentage of the total trace time each span takes which allows you to identify the problem application.

Jaeger, inspired by Dapper and OpenZipkin, is a distributed tracing system released as open source by Uber Technologies. It is used for monitoring and troubleshooting microservices-based distributed systems, including:

Distributed context propagation
Distributed transaction monitoring
Root cause analysis
Service dependency analysis
Performance / latency optimization