I’ve upgraded my Mozilla 1.3.1 install to the Mozilla 1.4 milestone and I’m pleased with it. Mozilla 1.4 is the best Mozilla yet. Here’s a few of the improvements I noticed: the chevron menu for the personal toolbar that shows up if you have too many items, improved bookmark drag and drop behavior, go to line in view source, and clicking on an error in JavaScript console takes you to error line in view source. There are also changes in the preferences including a terrible UI for configuring the launch options for startup, new windows and new tabs, but at least you can do it.
I find that I still need to do fair amount of tweaking and reconfiguring before I’m ready to use it. I put together a page that shows my typical Mozilla Tweaks.
I’ve also played with Netscape 7.1 which is basically identical to Mozilla 1.4. Compared to 7.02, it is a huge improvement. As a web developer, I’ve very thankful that a custom install of Netscape 7.1 includes a developer pack with the DOM viewer, JavaScript debugger, and Chatzilla. Of course those tools have been available in Mozilla for ages, but it’s good Netscape decided to include them in the branded release. If you need to use Netscape, 7.1 is terrific.