How to Create an Interactive PDF: The Ultimate Guide
Tips for creating interactive PDFs from Visme.
Interactive PDF Creator. Make Your PDFs Clickable - Flipsnack
This tool lets you add interactive elements to PDF documents
Transcript.LOL - Summary, Topics, & Ask Questions
Automatic transcripts including speaker identification plus summaries and additional info. Post the link to a recording, and it can transcribe it for you. This AI transcription tool has different levels of paid plans for larger volumes of media and additional features.
eFront: Top 10 Open Source e-Learning Projects to Watch for 2011
Great collection of open source e-learning projects and tools, including multimedia development, screen recording, Android app development, an LMS, and more. (Technically, some of these are Free, not Open Source, but still a valuable list.)
Swftools.com - Flash tools, utilities, applications, components
Directory of tools that do at least some of what Flash can do or that work with Flash--presentation tools, quiz tools, PowerPoint to Flash converters, ActionScript editors, etc. Most have free demos; not many open source options in this area.
CogDogRoo - StoryTools
Over 50 tools for digital storytelling, categorized by tool type
authorSTREAM Online PowerPoint Presentations and Slideshow Sharing
Similar to Slideshare, this site lets you upload PowerPoint presentations for online sharing. However, this site also allows conversion to Flash while keeping all transitions and animations.
Collaboration Tools : eLearning Technology
Text version and list of tools for screen sharing, VOIP, video conferencing, web conferencing, multimedia presentations, file sharing, and more. The mind map version might be easier to understand than the text list, but having the list as a starting point for your own research is nice.