Grammarly is not available as a self-hosted solution but there are some alternatives for power users and business that want to host a solution on-premise. The best Self-Hosted alternative is Harper, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to Grammarly and seven of them are available as a self-hosted solution so hopefully you can find a suitable replacement. Other interesting Self-Hosted alternatives to Grammarly are Trinka AI, Sapling, Editsaurus and WebSpellChecker.
Harper is an English grammar checker designed to be just right. I created it after years of dealing with the shortcomings of the competition.
Provides advanced grammar and style checking for academic, technical, and formal writing in English and Spanish, with MS Word and LaTeX support that preserves formatting, robust inconsistency detection, automated proofreading, online access, and data privacy features.
AI writing assistant for customer-facing teams. Spelling, grammar, and autocomplete suggestions. Sapling sits on top of CRMs and messaging platforms to help agents more efficiently compose personalized responses.
WebSpellChecker offers a portfolio of multilingual sentence check solutions for dev companies, businesses, and individuals, WProofreader SDK, WProofreader browser extension, SCAYT plugin for CKEditor 4, WProofreader plugin for WordPress.
Grammark helps improve writing style & grammar and teaches students to self-edit. Basically, it finds things that grammarians consider bad, highlights them, and suggests improvements.
Grammark has a "lean in" style with active voice that I like. It's a nuance but important.
AI-powered grammar correction tool using fine-tuned language models to fix grammatical errors in text.
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Grammark is very proficient Authors protector. It has to be used as a service and can't be downloaded into Libre Office. But it does a wonderful job in the smaller offerings that can be managed through a service.