Simplest thing is Microsoft's Font properties extension.
Here are the screenshots of what you get...
Hi there,
I would like to ask if someone has a recipe for exploring a content of OpenType font. OK, I know, that the Glyph Panel in InDesign is pretty comprehensive — I can filter the Small Caps, I can filter Oldstyle Figures, I can filter Ornaments, or even Ligatures , but I am looking for some way to get a summary like this:
FontName.otf:
This font contains:
Extended Latin A & B
Greek
Discretionary Ligatures
Oldstyle Figures
Small Caps
…
Thank you.