Online Spellchecker. Online Spell check, Grammar, and Thesaurus checking Add Spell Checking to virtually any text box on your web site. Visit www.webspellchecker.net for details. Language: English - United States is currently selected (Change) Basic Check Advanced Check. "SpellCheckPlus" Online Spelling and Grammar Checker for English as a Second Language. Paper Rater: Pre-Grade Your Paper. Paste the text of your paper below (or upload a file) and select the "Get Report" button to immediately receive your analysis.* Upload File Select the education level of this paper's author*: Select the type of paper you are submitting (optional): Terms of UseLast updated on February 20, 2014.