WebSpellChecker offers a portfolio of multilingual sentence check solutions for dev companies, businesses, and individuals: WProofreader SDK, SCAYT plugin for CKEditor 4, WProofreader plugin for WordPress, WProofreader browser extension. WProofreader software development kit (SDK) – ready-made components for rich text editors and a standalone API, helping development teams enrich web apps and custom systems with grammar and spelling checking functionality. Spell and grammar check coverage 20+ languages. Cloud (SaaS model) and on-premise (self-hosted) deployment options. WProofreader free browser extension for Chrome, Firefox, and Microsoft Edge is designed for individuals and businesses with a focus on data security and privacy. Key features: data security within on-premise version, multilingual text checker, language autodetect, spelling autocorrect, autocomplete suggestions, integrations with business software, personalization options, spelling dictionaries.