WebSpellChecker offers multilingual sentence check solutions for businesses, individuals, and dev companies. They have a portfolio of products including WProofreader SDK, SCAYT plugin for CKEditor 4, WProofreader plugin for WordPress, and WProofreader browser extension. Their software development kit provides ready-made components for rich text editors and a standalone API for grammar and spelling checking functionality. They offer spell and grammar check coverage for over 20 languages and have both cloud (SaaS model) and on-premise (self-hosted) deployment options. Their free browser extension for Chrome, Firefox, and Microsoft Edge includes features such as data security, multilingual text checker, language autodetect, spelling autocorrect, autocomplete suggestions, integrations with business software, personalization options, and spelling dictionaries.