Move your team from LanguageTool to Grammarly.
Each person gets a short interview, then a personalized step-by-step guide showing exactly where their saved work, prompts, and projects land in Grammarly — and the few things that need a manual step, walked through. You send one invite; nobody becomes the help desk, and nothing in LanguageTool is changed or cancelled. Want to see where you’re paying for both first? Run the free audit.
Grammarly's AI assistant (Go) handles full drafting, summarising, email-response generation, and multi-step AI agents across external apps via a contextual overlay. LanguageTool's AI Paraphrasing covers the narrower use case of sentence-level rewriting — users select text and request a formal, simpler, or more concise alternative. Switching from Grammarly to LanguageTool for this workflow: identify which AI-assist tasks your team uses most frequently. If the need is limited to sentence-level rephrasing, LanguageTool Premium handles it with no setup beyond enabling the feature. If the need includes drafting from scratch, email summarisation, or AI chat, LanguageTool is not a replacement — consider pairing LanguageTool for corrections with a standalone AI tool for generative tasks.
- Warning: LanguageTool has no generative drafting, email-summarisation, or AI-chat capability. Grammarly's Go assistant handles all three. This is a genuine feature gap, not a configuration difference — teams that rely on AI drafting must use a separate tool alongside LanguageTool.
- Warning: Grammarly Free includes 100 AI prompts/month; Pro includes 2,000 prompts/member/month. LanguageTool Free limits paraphrasing to 3 per day; Premium unlocks unlimited paraphrasing — but only for rephrasing, not drafting.
- Warning: Grammarly's AI agents (Paraphraser, Proofreader, Resume Builder, Citation Finder) are specialised tools with no LanguageTool equivalents.
Grammarly offers sentence- and paragraph-level clarity rewrites as one-click suggestions inline wherever the extension is active. LanguageTool's AI Paraphrasing surfaces similarly inline: select the target text, trigger the paraphrase option, and choose a rephrasing goal (formal, simple, or concise). Switching from Grammarly to LanguageTool: disable Grammarly's extension, install LanguageTool Premium (paraphrasing is metered to 3/day on Free), then use the text-select-and-paraphrase flow. No content migration is needed — both tools operate on live text. Moving the other direction: Grammarly's clarity suggestions appear automatically while typing rather than requiring text selection.
- Warning: LanguageTool Free limits AI paraphrasing to 3 per day; Grammarly sentence-level clarity suggestions on Free are unlimited (full rewrites require Pro). Teams with heavy rewriting workflows must budget for LanguageTool Premium.
- Warning: Grammarly's full-paragraph rewrite and its Proofreader AI agent can rewrite large blocks automatically; LanguageTool's paraphrasing is selection-based and does not offer full-document or multi-paragraph rewrites in one action.
- Warning: Grammarly's clarity suggestions appear passively as underlines while typing; LanguageTool paraphrasing is user-initiated (select + trigger). Teams accustomed to passive suggestions will need to adjust their workflow.
Both tools embed grammar and style assistance across browsers, desktop, and Office apps via extensions and native add-ins. To switch from Grammarly to LanguageTool: uninstall the Grammarly browser extension from Chrome/Firefox/Edge/Safari; install the LanguageTool extension for the same browsers. For Word add-ins, remove the Grammarly for Word add-in and install LanguageTool's Word add-in from the Office Add-ins store. For Google Docs, swap the browser extensions. LanguageTool also supports LibreOffice, Apple Pages, Thunderbird, and Opera — surfaces Grammarly does not cover. Both tools sync settings and dictionaries to the logged-in account, so team members picking up the new tool will get shared rules automatically on Teams/Business plans.
- Warning: Grammarly's Go overlay works context-aware across 1 million+ apps without a tab switch; LanguageTool has no equivalent ambient AI assistant feature. Teams relying on the Go assistant for drafting or email-reply generation will find no direct replacement in LanguageTool.
- Warning: Grammarly supports mobile on iOS and Android via a keyboard app; LanguageTool's mobile support is limited — it does not publish a standalone keyboard app, so mobile users lose inline assistance on smartphones.
- Warning: Grammarly's desktop app integrates with Slack, Figma, Salesforce, and Zendesk; LanguageTool's desktop app covers system-wide text fields but does not list Slack, Figma, or CRM-specific integrations.
Both tools deliver inline grammar, spelling, and punctuation corrections through browser extensions and Office add-ins. To move from Grammarly to LanguageTool: install the LanguageTool browser extension (Chrome/Firefox/Edge/Safari/Opera) and the add-in for Word or Google Docs; uninstall or disable the Grammarly extension to avoid conflicting underlines. To go the other direction, swap extensions the same way. There is no document or history to migrate — both tools scan live text on-page. Make sure your team is on the appropriate paid plan (LanguageTool Premium for the full 20,000+ rule set vs. Grammarly Free for basic correctness) before removing the old tool.
- Warning: LanguageTool Free caps checks at 2,000 characters per text field; Grammarly Free has no documented per-document character limit on corrections. Teams writing long documents on the free tier will hit LanguageTool's limit and need Premium.
- Warning: LanguageTool supports 30+ languages with strong non-English coverage (German, Spanish, French, Dutch, Portuguese). Grammarly's grammar engine is English-first; other languages receive fewer checks. Teams writing primarily in German or French may find LanguageTool more capable.
- Warning: Grammarly's contextual-word confusion detection (e.g. 'less' vs. 'fewer') is not explicitly listed as a separate LanguageTool Free feature — it requires Premium's extended rule set.
Both platforms let org admins define custom writing rules that propagate to all team members as inline suggestions. Moving from Grammarly Business/Enterprise to LanguageTool Teams: export your Grammarly style guide rules by reviewing them in the Grammarly Admin panel (there is no bulk-export file format, so document rules manually); then re-enter equivalent rules in LanguageTool's Teams admin under the style guide section, and add proprietary terms to the shared Team Dictionary. Moving from LanguageTool Teams to Grammarly: review custom rules in the LanguageTool admin dashboard, then recreate them as Grammarly style guide entries and upload brand tone profiles in the Grammarly Business admin portal.
- Warning: Grammarly Pro supports only 1 style guide and 1 brand tone; Enterprise unlocks unlimited. LanguageTool Teams supports custom rules across all team members but does not expose a 'brand tone profile' concept — tone governance is handled through style rules rather than a separate tone engine.
- Warning: Grammarly adds Knowledge Share (surfaces company jargon definitions on hover) and Snippets (reusable message templates); LanguageTool Teams has no equivalent for either feature, so teams relying on those will lose that functionality.
- Warning: Neither platform exports style guide rules in a portable format — migration requires manually recreating rules on the destination side.
Grammarly detects the tone of writing in real time (formal, friendly, confident, direct) and on Pro+ offers one-click tone adjustment to shift register. LanguageTool's Picky Mode provides the analogous capability: it flags overused phrases, redundant words, filler words, and weak word choices as inline suggestions, pushing writers toward a cleaner and more appropriate style. To migrate from Grammarly to LanguageTool: upgrade to LanguageTool Premium, enable Picky Mode in settings (available in the browser extension options and desktop app), and disable Grammarly's extension. There is no config export — both tools infer tone and style signals from the text itself.
- Warning: Grammarly's tone detection names specific emotional registers (friendly, formal, confident, diplomatic); LanguageTool's style suggestions are rule-based (flagging redundancy, filler words) and do not show a detected-tone label. Teams using tone detection as a feedback signal for writers lose that specific visibility.
- Warning: LanguageTool's style improvements (Picky Mode) are Premium-only; Grammarly's tone detection (read-only) is available on Free. Migrating to LanguageTool without upgrading to Premium removes all style feedback.
- Warning: Grammarly's tone adjustment actively rewrites text to a chosen tone; LanguageTool flags issues but leaves the rewrite to the user. Teams that relied on one-click tone changes will need to make edits manually.