netbeans.apache.org - My favorite Integrated Development Environment (IDE) is NetBeans because it has multiple language support (Java, PHP, Javascript, etc.) and is free / open-source.
https://www.anaconda.com/ - For doing data science, or working in STEM (Science, Technology, Engineering, Math) the Anaconda distribution is the easiest (and free) way to get started. In addition to the Python and R programming languages, it has a full suite of...
itunes.apple.com - Impress Remote is an iOS application that allows you to control your LibreOffice Impress presentation using your phone. An Android version is also available.
play.google.com - Impress Remote is an Android application that allows you to control your LibreOffice Impress presentation using your phone. An iOS version is also available.
www.libreoffice.org - Open source office suite of programs: document editor, spreadsheet, presentations, math formulas, database, diagram and drawing applications.
www.w3schools.com - W3Schools has a complete online collection of web programming tutorials including HTML, CSS, Javascript, Perl, Java, PHP, Python, and XML. Pretty much everything you need to learn for programming for the client or server!