Best On-Premises Grammar Checkers of 2025

Top Main Features of Trinka AI: Advanced Grammar Check Unique Paraphrase Plagiarism Check Consistency Check Inclusive Language Checks Legal Writing Publication Readiness Checks Citation Check Proofread Word & LaTeX Files and many more features..

ProWritingAid helps companies produce better content, comms and reports, bids, and other documents faster. ProWritingAid eliminates common errors such as inconsistent terminology, context spelling errors, grammar mistakes, and poor style. There are many integration options available, including API and on site solutions. This supports all sizes of organizations, even those with privacy and security requirements.

WProofreader SDK is a set of predefined components for rich text editors such as CKEditor, Froala, TinyMCE, Quill.je, etc. With WProofreader SDK, developers can enrich the proofreading functionality of their web apps or systems. Core features: security, multilingual support, advanced grammar and spell check, customization and accessibility, HTTP API. WProofreader HTTP API is a set of commands to the proofreading engine enabling developers to customize the product behavior and capabilities. WProofreader is also available as a browser extension for Chrome, Firefox, and Microsoft Edge. Designed for individuals and businesses.

WRITER is the end-to-end platform for building, activating, and supervising AI agents across the enterprise. It empowers IT and business teams to collaboratively automate work, improve decision making, and scale impact — with full control and governance. Unlike other solutions built exclusively for engineers or business users, the WRITER platform gives anyone the tools to build powerful AI agents. Users can easily connect agents to customer data and systems, map business processes to guide agent behavior, and create and test prompts. They can get started quickly with a library of over 100 prebuilt agents, or build their own using intuitive no-code and pro-code tools. When code is needed, developers can create tools, APIs, and integrations with ease — then make them available to agents through a simple drag-and-drop interface.

AI assistant for customer-facing departments. Sapling works with messaging platforms and CRMs to assist agents in creating personalized responses. Managers can gain conversational insights that will help them coach and prepare their teams. Sapling offers functionality for autocomplete, spelling, grammar checking, as well as snippets/canned message/text expander. All services can be hosted on-premise or in the cloud to meet security and privacy requirements. The Grammar and Spelling APIs allow Sapling's language models to be integrated into custom applications and use-cases. Sapling Suggest pulls relevant answers from a team knowledge database and allows agents to respond faster to customer inquiries by clicking on the desired response. Instead of giving brittle, decision tree-based chatbots, empower agents.

TextGears provides translation, paraphrasing and text checking services for hundreds companies around the globe. Free demo available online. API allows to integrate TextGears text analysis into any modern software product. On-premise installation will be the best options for those companies that cannot use any services our of the corporate network. Supported languages include: English, French, German, Portuguese, Russian, Italian, Arabic, Spanish, Japanese, Chinese and Greek.