3Dhotbed is a collaborative project that seeks to enhance book history instruction by providing access to affordable teaching tools and related materials for pedagogical purposes.
A quick and easy tool for creating professional-looking layouts, presentations, and graphics. It provides millions of stock photographs, icons, shapes, fonts, and illustrations, and a wide variety of filters to go with them. Canva is free to use, but also offers a print service for your creations.
A database of over 200 graphical user interfaces (GUI), presented with images, administrator reviews, and in a downloadable format. Primarily MS-DOS compatible, but some comparible systems may be supported. 
GDC Vault is a collection of in-depth design, technical and inspirational video talks, and slides from the influencers of the game development industry, taken from over 20 years of the worldwide Game Developers Conferences -- that's 12,000 videos, audio files, and synced presentations from speakers and panels.
Explore the history and evolution of the Graphical User Interface in this GUI Gallery. Here you'll find screen shots of various desktop computer graphical user interfaces and operating systems. Many different people have had different ideas of how a GUI should work and these screen shots show many of the more popular ones, from unreleased Xerox workstation interfaces to Microsoft's latest Windows releases.
Inkscape is a free, open-source vector graphics editor similar to Adobe Illustrator, Corel Draw, Freehand, or Xara X. What sets Inkscape apart is its use of Scalable Vector Graphics (SVG), an open XML-based W3C standard, as the native format.
The Internet Archive is building a digital library of Internet sites and other cultural artifacts in digital form. Like a paper library, they provide free access to researchers, historians, scholars, the print disabled, and the general public -- in this case, over 200,000 software programmes.
A course originally designed for English students at third-level, at the end of which you should be able to:
  • Host a web project that investigates an academic topic;
  • Consider means by which you can present the topic to a public larger than just your class;
  • Write JavaScript, HTML, Markdown, and CSS;
  • Use Atom as a development environment for your project;
  • Create and manipulate Leaflet maps;
  • Manage GeoJSON data;
  • Use Git to keep track of your project; and
  • Think about your study as a process that changes over time.
Krita is a professional, free, and open source digital painting programme. It is made by artists that want to see affordable art tools for everyone. Its primary uses are for creating concept art, illustrations, and comics -- but the sky's the limit!
Neocities provides a canvas for people to make any web site they want -- their goal is to make the internet fun again. It's free, open-source, and sustainable platform without ads or lock-ins (custom domains and easy site downloading). They also offer HTML, CSS, and JavaScript resources for making the most of your site.
TimelineJS is an open-source tool that enables anyone to build visually rich, interactive timelines. Beginners can create a timeline using nothing more than a Google spreadsheet. Experts can use their JSON skills to create custom installations, while keeping TimelineJS's core functionality.
WinWorld is an online museum dedicated to the preservation and sharing of vintage, abandoned, and pre-release software. They offer information, media, and downloads for a wide variety of computers and operating systems.
The entire library is free, open, and available to everyone.