Free Software for Self-Hosted
pump.io
Pump.io is a general-purpose activity streams engine that can be used as a federated social networking protocol. With Pump.io almost anything can be represented with activity streams including short or long text, bookmarks, images, video, audio, events, geo checkins. You can follow friends, create lists of people, and much more.
OpenProject
OpenProject is an open-source, web-based project management system for location-independent team collaboration. The software allow you and your team to efficiently plan, collaborate and document the process of building projects. OpenProject is released under the GNU General Public License Version 3 and is available as free community edition and a commercial, hosted, enterprise edition.
Standard Notes
Standard Notes is a safe place for your notes, thoughts, and life's work. With Standard Notes you can create, edit and manage notes with a complete encrypted app that is free and open source.
Egg.js
Egg.js is a free and open-source JavaScript and Node.js framework for building better enterprise applications.
Zend Framework
Zend Framework is a web application framework written in PHP that has an open architecture based on middleware or MVC which follows PHP-FIG standards. The framework is designed to follow the best security practices and stores passwords using bcrypt and encrypts data with AES-256. Zend Framework consists of multiple PHP packages that are designed to run separately or work interchangeably together. With Zend Framework you can develop web applications and services using PHP 5.6+, while writing 100% object-oriented code, broad spectrum of PHP specific features.
Webmin
Webmin is a web-based interface for system administration tool for Unix-like systems. You can use Webmin in any modern browser to setup and manage& user accounts, Apache web server, DNS configuration and alike. The software removes the mundane task of manually editing Unix configurations and allow you to easily setup hosting for applications, sites and web services.
FuelPHP
FuelPHP is a MVC (Model-View-Controller) framework that was designed from the ground up to build scalable web applications written in PHP. Out-of-the-box, FuelPHP supports HVMC as a part of its arcitecture. The Hierarchical-Model-View-Controller (HMVC) pattern is a direct extension to the MVC pattern that manages to solve many of the scalability issues when building applications. HMVC is a collection of traditional MVC triads operating as one application. Each triad is completely independent and can execute without the presence of any other. All requests made to triads must use the controller interface, never loading models or libraries outside of their own domain. FuelPHP is released as a free and open source framework under the MIT License and can be used for commercial and personal projects alike.
Angular
Angular is a TypeScript-based free and open source platform and web application framework. The framework developed and released by the community and the Angular Team at Google. Angular is a is a complete rewrite of AngularJS.
Apache NiFi
With Apache NiFi you can automate the flow of data between software systems. Apache NiFi supports powerful and scalable directed graphs of data routing, transformation, and system mediation logic. Apache NiFi is highly configurable and provides an intuetive web-based user inferface that can be used to control and monitor your data flow. The software is developed by the Apache Foundation and released free and open-source under the Apache License 2.0.
CherryPy
CherryPy is a free and open-source object-oriented HTTP and web framework written in Python. CherryPy allows developer to build web application the same way they would build any other object-oriented program. The design of CherryPy result in a simpler and faster development experience with more readable code. CherryPy is distributed under a BSD license and loved by many Python web developers.