One of the requirements for the twitter client we are developing for the community is a spellcheck component. What are some of the spellcheck components/systems you have us
DevExpress VCL also has a spell checker, though I have only played with a bit. I also own Addict which I use in software projects.
You can use Aspell (Win32 version: http://aspell.net/win32/).
In your Delphi project you could use the command line pipe interface: aspell pipe
:
C:\Programme\Aspell\bin>aspell pipe @(#) International Ispell Version 3.1.20 (but really Aspell 0.50.3) hello * world * helllo & helllo 18 0: hello, Helli, hell lo, hell-lo, hell, Heall, hallo, he'll, hullo, Heller, heller, hellos, Jello, jello, Halli, Holli, hallow, hollow wourld & wourld 12 0: world, would, wold, whorled, wield, weld, wild, wooled, whirled, worlds, woulds, word