10.6 Updates
So many apps have received minor updates to give them full compatibility with Mac OS 10.6 Snow Leopard that it’s hardly worth posting anything about them. Among the apps that have been updated for Snow Leopard as of this writing are: Tags, EagleFiler, Punakea, Things, OmniFocus, Hazel, Scrivener, and I’m sure others that I’ve overlooked.
Other apps, like Together, have had Snow Leopard compatibility for some time; if a tagging app not listed here is central to your workflow, you should definitely check with its developer to see if it has been tested on Snow Leopard prior to upgrading.