Radare is a portable reversing framework that can...

Disassemble (and assemble for) many different architectures
Debug with local native and remote debuggers (gdb, rap, webui, r2pipe, winedbg, windbg)
Run on Linux, *BSD, Windows, OSX, Android, iOS, Solaris and Haiku
Perform forensics on filesystems and data carving
Be scripted in Python, Javascript, Go and more
Support collaborative analysis using the embedded webserver
Visualize data structures of several file types
Patch programs to uncover new features or fix vulnerabilities
Use powerful analysis capabilities to speed up reversing
Aid in software exploitation

Don’t let your friends dump git logs into changelogs.

Scan, index, and archive all of your paper documents. Open Paperless is a re-think of the user interface and user experience for Mayan EDMS. The goal is to reduce the complexity and make it more suitable for home users.

Elixir is a dynamic, functional language designed for building scalable and maintainable applications.

Elixir leverages the Erlang VM, known for running low-latency, distributed and fault-tolerant systems, while also being successfully used in web development and the embedded software domain.

Fast and safe HTTP for the Rust language.

Iron is a fast and flexible middleware-oriented server framework that provides a small but robust foundation for creating complex applications and RESTful APIs. No middleware are bundled with Iron - instead, everything is drag-and-drop, allowing for ridiculously modular setups.

Perti is Wix’s holistic experiment system, it covers the lifecycle of product experimenting including A/B tests and feature toggles.

Motty provides the simpler way to test your client services.
It is a web application which gives you ability to create your own custom responses.
So you can intuitively and easily mock http responses. All you need to do is typing and click!

A Python one stop shop for all notification providers with a unified and simple interface.

Social server with an ActivityStreams API. It's a stream server that does most of what people really want from a social network.

Fireworq is a lightweight, high-performance, language-independent job queue system.

zines about systems & debugging tools

Stateless Password Manager : Stop wasting your time synchronizing your encrypted vault. Remember one master password to access your passwords, anywhere, anytime. No sync needed.

A real-time application for conducting Agile retrospectives with distributed teams.

Ncdu (NCurses Disk Usage) is a disk usage analyzer with an ncurses interface. It is designed to find space hogs on a remote server where you don't have an entire graphical setup available, but it is a useful tool even on regular desktop systems. Ncdu aims to be fast, simple and easy to use, and should be able to run in any minimal POSIX-like environment with ncurses installed.

A plugin-oriented tool for automating the investigation of broken hosts and services.

Flagr is an open source Go service that delivers the right experience to the right entity and monitors the impact. It provides feature flags, experimentation (A/B testing), and dynamic configuration. It has clear swagger REST APIs for flags management and flag evaluation.

Grav is a modern open source flat-file CMS written in PHP

Best Practices for kubernetes

Ampache is a web based audio/video streaming application and file manager allowing you to access your music & videos from anywhere, using almost any internet enabled device.

Ampache's usefulness is heavily dependent on being able to extract correct metadata from embedded tags in your files and/or the file name. Ampache is not a media organiser; it is meant to be a tool which presents an already organised collection in a useful way. It assumes that you know best how to manage your files and are capable of choosing a suitable method for doing so.