Accessibility of Authoring Tools (PDF)
Table comparing the accessibility features of Captivate, Lectora, and Articulate Storyline
Our Thoughts on Articulate Storyline | E-Learning Uncovered
Podcast comparing Articulate Storyline with Articulate Studio, Captivate, and Lectora in multiple categories, explaining the advantages and drawbacks of each.
How To Choose An Authoring Tool For Your HTML eLearning Development | The Upside Learning Blog
Comparison of Lectora, Storyline, and Captivate. Some good details I haven't seen elsewhere, like how each program loads the framework and content and how that affects performance. A few inaccuracies (you can still create a non-ADA compliant course in Lectora even if you check the 508 box, for example).
Updated E-Learning Authoring Tools Comparison - E-Learning Uncovered
Diane Elkins (E-Learning Uncovered/Artisan E-Learning) ranks tools based on price, ease of use, graphics, animation, interactivity, quizzing, power/flexibility, ADA, mobile, and software simulations.