Free Education Software
wikidPad
wikidPad is a Wiki-like note taking application for storing your thoughts, ideas, todo lists, contacts, or anything else you can think of to write down. What makes wikidPad different from other notepad applications is the ease with which you can cross-link your information. Links in a wiki are created by typing in WikiWords. wikidPad allows you to get a better undestanding of your research and documentation and allow you to better explore and rediscover your knowledge.
SpeedCrunch
SpeedCrunch is a free and open-source high-precision scientific calculator. The application features a fast, keyboard-driven user interface that displays results as you type. SpeedCrunch comes with over 80 built-in mathematical functions, if that's not enough, you can define your own functions. A library of built-in formulas that allows to you to review and insert commonly used formulas is also included. SpeedCrunch can be downloaded for macOS, Linux and Windows, and is licensed under the GNU General Public License.
Stack Exchange
Stack Exchange is a Q&A platform for a variety of topcis. In total, Stack Exchange has over 170 communities that is managed by people who are passionate on each indicidual topic. Experts like yourself can be part of any community and post, vote and bring forth the best answer to any given question.
LibreOffice Impress
LibreOffice Impress is a free and open source presentation and slide show software that allow you to create interactive slide shows for your next presentation.
Slate API Docs Generator
Slate' API Docs Generator helps you create beautiful, intelligent, responsive API documentation.
Khan Academy
Khan Academy is a free library of trusted, standards-aligned practice and lessons covers math K-12 through early college, grammar, science, history, AP, SAT, and more. Khan Academy was created in 2008 as a non-profit educational organization with the goal to provide educational tools as an online service.
SoloLearn
With SoloLearn you can learn to code for free. Take part in interactive lessons that are served on-the-go with practise, quizzes, lessons, and peer support. Over 42 million people are using SoloLearn to learn to code through lessons and fun practice sessions that grab your attention and keep you focused, for guaranteed best results.
Gitter
Gitter is an open-source instant messaging and chat room system for developers designed to make community messaging, collaboration and discovery as smooth and simple as possible. Gitter is provided as software-as-a-service and integrates with GitLab and GitHub repositories to make discussion around code even easier. With Gitter, you can can easily create, organise and grow your communities, inviting others to join just in one click. Over 1.5M users across 100K communities use Gitter to discuss code and development progress.