TextWrangler 1.5
The initial version of TextWrangler lacked one of BBEdit’s greatest features: AppleScriptability. TextWrangler 1.5 is now scriptable (and recordable and attachable) and adds syntax coloring for non-C programming languages and TeX. Notable BBEdit features absent from TextWrangler are the HTML tools, the glossary, file filters, multi-file diffs, CVS integration, and the shell palettes and worksheet. TextWrangler is now an extremely attractive product for people who don’t deal with HTML. That said, I regularly use all of the above features, except the shell worksheet, even when not dealing with HTML, so I think the full BBEdit is worth it for non-Web developers.