Open Source Software
Laravel
Laravel is an extremely popular, free and open source web application framework with expressive, elegant syntax. The framework is written in PHP and provides a developer experience that rival most web application frameworks on the market today. The structure and built-in features of Laravel allows developers to build web applications faster. Instead of setting up tooling and configuring settings, developers can focus on the important task at hand, making their ideas into reality.
Egg.js
Egg.js is a free and open-source JavaScript and Node.js framework for building better enterprise applications.
Crystal
A free and open general-purpose, object-oriented programming language developed by Ary Borenszweig, Juan Wajnerman, Brian Cardiff and a community with over 300 contributors. Crystal is statically type checked, which means that all code errors will be caught at compile time, rather than fail on runtime. Crystal provides an easy-to-learn syntax similar to Ruby, while at the same time producing performance similar to that of the programming language C.
PostCSS
PostCSS is a software development tool that uses JavaScript-based plugins to automate routine CSS operations. The free and open-source library was designed and written by Andrey Sitnik and the community. PostCSS is used in a multitude of web-based application across the web where it helps developer to optimize CSS and bring a better experience to end-users.
Notepad++
Notepad++ is a free and open source text editor that support a wide range of programming languages. Notepad++ is written in C++ and uses pure Win32 API and STL which ensures a higher execution speed and smaller program size. By optimizing as many routines as possible without losing user friendliness, Notepad++ is trying to reduce the world carbon dioxide emissions. When using less CPU power, the PC can throttle down and reduce power consumption, resulting in a greener environment.
Flask
Flask is a micro framework framework written in Python that can be used to build APIs, web services and web applications. Flask is designed from the bottom up to be extremely minimal and easy to use, where your whole application can fit into one single Python file. The framework includes no database abstraction layer, form validation, or any other components, by design. However pre-existing third-party libraries provide common functionality needed to build production ready applications and services.
Synfig Studio
Synfig Studio is a free and open-source 2D animation software for Windows, Linux and OSX.
DB Browser for SQLite
A high quality, visual, open source database management tool for SQLite databases. With DB Browser for SQLite, users and developers can create, search, and edit databases. DB Browser for SQLite uses a familiar spreadsheet-like interface, and complicated SQL commands do not have to be learned.
ct.js
ct.js is a 2D game editor that makes learning programming fun and game development easy by its visual tools, good docs and flexible, modular library. ct.js is based on Pixi.js, works on WebGL and provides great performance in browsers and desktop environments. The game editor is extensible through the use of Modules which adds new powers when ct.js core is not enough. Hobyist and professionals alike use ct.js to create 2D shooter, arcade, adventure, survival and puzzle games.
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.