[trollian]

I worked at a company that was interfacing with the AOL Instant Messenger network in the early 2000s. Finally the business people got a deal and AOL made us sign NDAs to get access to the official API docs. We were excited because we were using the docs that one of the open source clients had produced from their reverse engineering efforts.

AOL's docs were the same ones from the open source project, with the GPL message intact.

[Tabular-Iceberg]

What does an NDA-encumbered GPL document mean in practice? You're allowed to spread the document, but not tell anyone where you got it from?

I once received a library under a modified Apache 2.0 license, where all the conditions under section 4 (attribution, etc.) were just inverted for a given number of years (effectively an NDA), after which the normal Apache 2.0 would apply. Which worked because it came straight from the original copyright owners, but here I assume AOL weren't.

[DaiPlusPlus]

Trillian?