Ink Spot 1.14r3
the author of this app says:
If you'd like to keep up with your favorite newsgroups while you're away from your workstation, take a look at Ink Spot.
Ink Spot has lots of features that users will enjoy, such as the ability to filter messages by sender, subject, word or phrase. You can also reply offline and upload your messages on your next connection.
The new version adds BZIP2 compression support and improved threading speed.