Corrector

Corrector is a free, web-based grammar checker that reviews text for spelling, grammar, and punctuation mistakes. Users paste text into the site and get errors highlighted directly in the text, with major mistakes marked in red and minor issues in yellow, alongside suggested fixes and sentence-restructuring recommendations. It also offers word-choice suggestions and a feature for detecting AI-generated content. While many grammar checkers focus only on English, Corrector puts particular emphasis on Tagalog, the language spoken alongside English in the Philippines, in addition to supporting more than 27 languages and dialect variants such as US versus British English. This makes it useful for students, professionals, non-native English speakers, and Filipino writers who want a proofreading tool that handles both languages well. The underlying grammar engine is built on LanguageTool. The tool requires no account or software download, works in any desktop or mobile browser, and is entirely free with no premium tier mentioned on the site. It is operated by Grammar Buddies LTD, a UK-registered company. Since it is a general-purpose checker rather than a specialized writing assistant, it does not offer the deeper style or tone coaching found in some paid alternatives.