I have written several autocompleters, both for desktop- and web-apps. Put in a good amount of thought and coding, and I do believe they worked reasonably well,

I have written several autocompleters, both for desktop- and web-apps. Put in a good amount of thought and coding, and I do believe they worked reasonably well, and would have scored alright on this list. One thing, though: Context. Expectations will vary, depending on who is using the particular input field and for what. Searching a customer base? Match first on names, then further down on addresses, emails and whatnot. Or whatever.