1. Scriptaculous (http://script.aculo.us)
Provides: Easy drag and drop, animation, and AJAX functionality
Building on the Prototype Javascript framework, Thomas Fuchs, with the help of a community of open source contributors, has given us an easy-to-use but extremely powerful toolkit for some of the more tedious Javascript tasks we face - namely UI features (e.g. drag and drop) and AJAX functionality. Those of us who have been around long enough to have had to work with positioning and controlling user interface elements know the headaches involved in getting your event handlers to fire as you expect them or tracking the x and y coordinates of the mouse. In fact, I suspect the #1 most common reason for keyboard smashing and monitor punching among developers goes something like "graphic element expanded beyond its container instead of properly wrapping to the next line".
With Scriptaculous, implementing drag and drop, including sortable lists, is about as easy as it can feasibly be, and the AJAX-related classes are a godsend. Even someone with only moderate experience in javascript should be able to implement advanced UI features and AJAX functionality without much trouble. Scriptaculous is well integrated with Ruby on Rails, and I expect that it will soon be driving a lot of the AJAX functionality in my own PHP MVC framework, FUSE
2. The Free Rich Text Editor (http://www.freerichtexteditor.com/)
Provides: a full WYSIWYG editor, a la blogger's "compose" feature
Definitely file this under "things I would NOT like to have to write from scratch"! Released under the Creative Commons License (thankfully), this rich text editor control allows you to easily implement full WYSIWYG functionality into your web application. With a wide range of editing functions, from bulleted lists and visual color selection to drag and drop image placement, it just doesn't get any better than this. A simple .js configuration file provides you with customization options, and once you add in a few tags, you're all set. Custom WYSIWYG in under ten minutes. This one has been integrated into FUSE since the day I found it!
3. Model / View / Controller architecture
Provides: Sanity
Ok, this isn't exactly a "tool", and the idea has certainly been around for a long time (since 1979 according to Wikipedia) , but MVC has finally started to gain real acceptance in the web development community to the point where it's becoming the standard for large scale, web-based applications. Due in some part to the popularization of Ruby on Rails, along with other MVC frameworks like Cake, Symfony(, or FUSE), web developers have finally started realizing that procedural scripting, especially the sort that mixes application code and presentation (e.g. PHP and HTML in the same file), isn't the best method for creating scalable, manageable applications. At this point, most MVC developers will look at you with a true sense of confusion and disappointment if you suggest ANY other way of developing a web app, but it seems that the majority of web programmers are still stuck in the "Chapter 1 of 'Building your first PHP applicatoin'" mentality, mixing procedural code in with HTML and packaging it all up in ugly URLs with long query strings. Get with the program, guys!
So there you have it - some things that helped me keep what's left of my sanity for the past year. I may add to the list if I think of something that really needs to be mentioned, but the three items listed were part of my daily development life in '07, and I suspect that all of them will keep me company for '08 as well.
