Numerous tagging applications received interesting updates in March (lack of timely coverage thanks to real-life distractions). Tag Folders was bumped to 2.0 (current version: 2.0.2) and now includes OpenMeta tagging support with two-way conversion of tags and numerous bug fixes. MarsEdit 2.3 was released and added Tumblr support. EagleFiler 1.4.5 includes OpenMeta tags import, improved ways to access tags via Applescript, and numerous bug fixes. Tags 1.2 is now available and includes improved Quick Look support, a new AppleScript interface, reduced conflicts with MailTags, and several other fixes and improvements. Evernote 1.3 was released (current version 1.3.1), including a new Safari clipper toolbar button, Safari 4 support, Growl notifications, and (in not so happy news) advertisements for non-premium users.
For more information, see the Tag Folders release notes, MarsEdit 2.3 blog announcement, EagleFiler 1.4.5 blog announcement, and the Evernote 1.3 Mac blog announcement. Tags does not currently have up-to-date release notes online.