This is actually 18+ free and/or open source LMSs. Some are truly open source, some are freemium or other business models. If you want a list that goes well beyond Moodle and Canvas, this is a good place to start.
Sites with High Quality Photos You Can Use for Free | CSS-Tricks
Free photos. This list includes a number of sites I haven't seen elsewhere. Many of these just share a few photos each week, and you'd have to be pretty creative to use them for most corporate e-learning. This isn't just typical stock photos.
Free eLearning Books - The Ultimate List - eLearning Industry
50+ free e-learning ebooks. I wish these were sorted by topic or purpose rather than date, and I wish the authors or sources were consistently included in the descriptions. The descriptions are generally copied and pasted from the source, so no additional insight is added in the post. It's still a useful list though.
Microsoft Office Mix review – a potential new player in digital learning? | eLearning Instructional Design Specialists in Articulate Storyline, Lectora and LMS | Learning Tech, Auckland, NZ
Microsoft's entry into the e-learning world is a lightweight but free PowerPoint add-in. You can record presentations and do basic quizzing. They have their own reporting tool, but you can't use it in an LMS.
Tools for branching scenarios, from free and simple to expensive and complex. PDF, PowerPoint, BranchTrack, Inklewriter, Twine, Storyline, and SimWriter.
Free Open Source LMSs are like Puzzles « E-Learning 24/7 Blog
Nice metaphor for working with free LMSs. Moodle can work "out of the box" for some small instances with limited needs but this description is a fairly typical experience of customization.
8 Free Applications To Record Your Computer Screen | inspirationfeed.com
Multiple free options for screen recording. This is mostly about making videos for YouTube or similar sites, but these could be used for quick tutorials and demos in e-learning. I'm familiar with Screenr, Jing, and CamStudio, but not BSRSoft, XVidCap, EZVid, BB FlashBack Express, or Rylstim.
Online tool for converting PDF files to Word, Excel, PPT, etc. It does a good job of making text editable, but converts SmartArt as static graphics. It would work for small text edits in a presentation where you don't have the original PPT file, but if you had a lot of SmartArt to rebuild it wouldn't save much time. It might work better for Excel spreadsheets than the PPT I tested.
Highlights sentences, shows links to sources where content came from. I wish it showed the original and copied content side by side so it was easier to compare; you have to just go to the source and find it yourself.
ActivePresenter is a screencast/simulation tool with some similar features to Captivate. The free version can do screencasts and export them to WMV, but not simulations in Flash. You can add captions and zoom and pan even with the free version.
30 Stunning Fonts To Enhance Your Designs | Fonts | instantShift
Free fonts & additional links for free fonts. Check the licensing and be careful though; some are personal use only, some require registration, at least one requires personal info & credit card even though it's "free."
Free tool for course authoring. Screen captures and PowerPoint imports are paid extras, but the basic tool is free. Might be nice for creating portfolio samples if you don't have access to Captivate or Articulate.