JetBrains PyCharm is a new Integrated Development Environment for programming using Python with the following key features:

• Intelligent Editor: for Python with code completion, on-the-fly syntax and error highlighting and code inspections
• Code Refactoring: including rename, introduce variable, introduce constant, pull up, push down and others
• Web development with Django: with specific templates editing support, server launch from IDE and best in class support for HTML, CSS and JavaScript editing.
• Project and Code Navigation: specialized project views, file structure views and quick jumping between files, classes, methods and usages
• Error-Free Coding: on-the-fly code analysis, error highlighting and quick fixes
• VCS Integrations: out-of-the-box support for Subversion, Perforce, Git, and CVS with changelists and merge
• Cross-platform: works on WIndows, Mac OS X and Linux

via jetbrains.net

Sounds like it has a lot of promise.

Pastebot is a powerful clipboard manager that stores text & images copied from your iPhone/iPod Touch. Organize, apply filters to, and copy clippings to be pasted or sent to other apps.

via tapbots.com

Fantastic clip board manager for the iPhone. The killer feature is the free companion sync Mac application that lets you push clippings back and forth from your Mac and iPhone. It basically helps turn your iPhone into a data gathering device. Check out this Macworld review and watch the video on the Pastebot website to really get a sense of how amazing this app is. Thanks to John Gruber for the find.

• calibre - About
  calibre is a free and open source e-book library management application developed by users of e-books for users of e-books.

• Common Lisp: A Gentle Introduction to Symbolic Computation

Today, we’re excited to announce an important update: Readability 1.5. Some of the changes are more subtle than others. We’ve been listening to your feedback and we’re working to improve Readability for everyone.

via blog.arc90.com

Readability is a simple tool that makes reading on the Web more enjoyable by removing the clutter around what you're reading. It's a bookmarklet you click that formats a web page so it is much more enjoyable to read. If you haven't checked it out yet, you really should.