Windows/Mac/Linux (AIR): Say what you will about newspapers, but the old grey ladies are laid out for quick reading. Cross-platform app (and web app) Readefine breaks any site or feed into column-split articles and easy access jumps to other posts.
Adobe AIR: Note-taking application Scribbly lives in your system tray and lets you quickly write notes or reminders to yourself, and then will email them to you with a single click.
Windows/Mac/Linux: Popular desktop Twitter client TweetDeck just released an update boasting support for a few of Twitter’s new features—including lists, geolocation and retweets—along with support for career-oriented social networking site LinkedIn.
Windows/Mac/Linux: Adobe is offering up a “prerelease” of its inescapable Flash software, adding in GPU acceleration for H.264 video in Windows, multitouch support and bug fixes. Anyone with Adobe AIR apps can also grab a 2.0 prerelease of that platform.
Windows/Mac/Linux (Adobe AIR): We’ve written about a lot of desktop clients that are essentially site-specific browsers (SSBs), but free AIR client Google Tasks helps you consolidate your clients by allowing access to most Google apps in mobile form.
Windows/Mac/Linux (Adobe AIR): Waver allows you to keep a single-column view of Google Wave open on your desktop at all times from which you can read, compose, and keep an eye on what’s happening in your Wave inbox.
Adobe AIR apps like TweetDeck work on all platforms, but with a few quirks — like not opening your preferred browser on clicked links. Here’s a few solutions for TweetDeck and other AIR apps running on Windows, Mac and Linux.