I just upgraded to Lion and I'd like to know what applications support OS X's resume/autosave/iCloud features. Is there a searchable list of applications that support these features?
Update: This question also includes Mountain Lion.
I don't believe that there is a resource showing apps that support one specific Lion feature; but an excellent starter source is Roaring Apps: http://roaringapps.com.
Roaring apps is a group sourced site that analyses apps and how well they do or don't work on Lion. This site had a lot more traffic right after Lion's release and I expect it to get hit again as (Redacted) Lion hits the streets.
It might be worth submitting to that site to see if they'd expand to cover Lion-esque features for more details.
I contacted the Roaring Apps developer and he has added this feature to his tables: