BlogJet is a fine offline blog editor that I've written about in the past (and use). The developers have just announced the availability of version 1.2 in beta. Here's a list of what's new:
We are glad to announce the availability of BlogJet 1.2 beta. You can download it from our Download page (click the second link) - http://blogjet.com/download/ .
This version includes long-awaited image resizing, file attachments, extended entries, excerpts and keywords, a brand new code editor with syntax highlighting and better code completion, easier account switching, XML-based drafts, typographic characters and autoreplacement of smilies, full XHTML support. Detailed release notes will be posted shortly.
Also in this new release is a Mozilla-friendly "Blogjet This" extension.
