repmgr is an open-source tool suite for managing replication and failover in a cluster of PostgreSQL servers. It enhances PostgreSQL's built-in hot-standby capabilities with tools to set up standby servers, monitor replication, and perform administrative tasks such as failover or manual switchover operations.

DeepGit is a tool to investigate the history of source code. It combines Git Blame and Log information and makes it easy to trace changes to a line or block of code. DeepGit will detect code movements, even if lines are not identical.

churn-php is a package that helps you identify php files in your project that could be good candidates for refactoring.

Gravitational Teleport is a modern SSH server for remotely accessing clusters of Linux servers via SSH or HTTPS. It is intended to be used instead of sshd for organizations who need:

SSH audit with session recording/replay.
Easily manage SSH trust between teams, organizations and data centers.
SSH into behind-firewall clusters without any open ports.
Role-based access control (RBAC) for SSH protocol.

A network daemon that runs on the Node.js platform and listens for statistics, like counters and timers, sent over UDP or TCP and sends aggregates to one or more pluggable backend services (e.g., Graphite).

PlantUML is an open-source tool allowing users to create UML diagrams from a plain text language

Franchise is a lightweight but powerful SQL tool with a notebook interface.

Open source home automation that puts local control and privacy first. Powered by a worldwide community of tinkerers and DIY enthusiasts. Perfect to run on a Raspberry Pi or a local server.

Stencil is a compiler that generates Web Components (more specifically, Custom Elements). Stencil combines the best concepts of the most popular frameworks into a simple build-time tool.

Stencil takes features such as

Virtual DOM
Async rendering (inspired by React Fiber)
Reactive data-binding
TypeScript
JSX

and then generates standards-based Web Components with these features baked in.

Codemod is a tool/library to assist you with large-scale codebase refactors that can be partially automated but still require human oversight and occasional intervention. Codemod was developed at Facebook and released as open source.

Wick is a free browser-based toolkit for creating small interactive things for the Internet. With Wick, you can create games, animations, and everything in between. Your creations can run on any device with a web browser - that means mobile too. And since Wick lives in the browser, you don't have to download any extra software to use it!

Wick is a hybrid of an animation tool and a coding IDE, heavily inspired by similar tools such as Flash, HyperCard, and Scratch. It was developed in response to a growing need for such a tool for the modern web. You can read more about the creation of Wick here.

Insight.io brings IDE-like code intelligence features such as cross-reference, class hierarchy and semantic search, right into your browser and helps developers to work with more productivity.

Barman (Backup and Recovery Manager) is an open-source administration tool for disaster recovery of PostgreSQL servers written in Python. It allows your organization to perform remote backups of multiple servers in business critical environments and help DBAs during the recovery phase.

TagUI is a general purpose tool for automating web interactions

Seashells lets you pipe output from command-line programs to the web in real-time, even without installing any new software on your machine. You can use it to monitor long-running processes like experiments that print progress to the console.

This package provides a library and a command-line tool named wormhole, which makes it possible to get arbitrary-sized files and directories (or short pieces of text) from one computer to another. The two endpoints are identified by using identical "wormhole codes": in general, the sending machine generates and displays the code, which must then be typed into the receiving machine.

Extendable version manager with support for Ruby, Node.js, Elixir, Erlang & more

Psalm is a static analysis tool for finding errors in PHP applications.

osquery allows you to easily ask questions about your Linux, Windows, and macOS infrastructure. Whether your goal is intrusion detection, infrastructure reliability, or compliance, osquery gives you the ability to empower and inform a broad set of organizations within your company. osquery gives you the ability to query and log things like running processes, logged in users, password changes, USB devices, firewall exceptions, listening ports, and more.
You can perform ad-hoc queries or schedule them, optionally enable file integrity monitoring and process accounting too

PHP performance tool analyse your script on time, memory usage and db query. Support Laravel and Composer for web, web console and command line interfaces.