LanguageTool vs Sapling

LanguageTool is a writing assistant that checks grammar, spelling, punctuation, casing, and style across 31 languages. It also offers tone detection, writing statistics, and paraphrasing modes for making sentences more formal, fluent, simple, or concise. The service works through browser extensions and Windows, macOS, and iOS apps, and integrates with Google Docs, Microsoft Word, Apple Pages, and LibreOffice. Email add-ons are available for Gmail, Outlook, Apple Mail, and Thunderbird. The free version covers spelling, simple punctuation, and some style issues, with a 2,000-character limit per text field; Premium allows up to 150,000 characters. Individual Premium can be billed monthly, quarterly, annually, or every two years, but no plan prices are listed. Text written through the browser add-on is usually not saved; text in the editor is stored and accessible across devices. Teams can manage invited users and share style guides and dictionaries. Business solutions are described as GDPR-conform and support consistent brand voice. Premium has a 14-day money-back guarantee with cancellation and refund without questions.

Sapling combines writing assistance for teams with developer tools for adding language model-powered features to applications. Its writing tools include grammar and spelling corrections, autocomplete, rephrasing, tone and sentiment checks, and AI content detection. Style suggestions and tone detection are available, with support for 14 languages. Developers can access HTTP API endpoints and SDK components, including Python and JavaScript client libraries. Sapling lists 73 integration guides, with examples for Zendesk, Salesforce, Slack, Google Docs, Microsoft Word and browser extensions. It is available on the web, through extensions and Windows, via API, and in self-hosted deployments. Sapling says it uses TLS encryption in transit and AES-256 encryption at rest, and describes GDPR compliance and SOC 2 Type II certification. Enterprise accounts include audit logs, role-based access and single sign-on. The free plan has AI detector limits; paid writing assistance starts at $12/user/mo billed annually, and a 30-day trial is listed. API trials have a character limit and expire after one month.