GöSPress is a spellcheck plug-in for WordPress built on GoogieSpell. GöSPress provides spellcheck for posts, pages, and reader commenting.
For finer control you can select which pages will include the spell check from the GooSPress Options page sub-panel. You may select from: Write Post and Write Page in the Administration area and the Comments Page for readers.
Additionally, you can select which languages are presented as options in the drop-down selection menu on the post pages. The language will default to english if none is slected. It is also possible to remove the "Close" links from the bottom of the spell check pop-ups (clicking outside of the pop-up will close it automatically).