{
    "products": [
        {
            "slug": "grammarly",
            "name": "Grammarly",
            "kind": "web",
            "website": "https://www.grammarly.com/",
            "page": "https://listme.name/software/grammarly",
            "tagline": "Grammar, tone and AI writing help in browsers and apps",
            "summary": "Grammarly is a writing assistant that checks grammar, spelling, tone and clarity, and offers AI rewrites, text generation and an AI detector. It has a free plan and a Pro plan listed at $12 a month.",
            "platforms": [
                "web",
                "browser-extension",
                "ios",
                "android"
            ],
            "pricing": "freemium",
            "price_note": "Free plan; Pro $12 a month with a 7-day trial; Enterprise by sales contact",
            "free_to_use": true,
            "open_source": false,
            "strengths": [
                "Free plan covers spelling and grammar checks",
                "Browser extension works in many web apps",
                "Tone suggestions show how text will read"
            ],
            "limits": [
                "AI rewrites and agents need the paid Pro plan",
                "Enterprise pricing is not listed publicly"
            ],
            "checked": "2026-10-10",
            "connected_to_publisher": false,
            "overview": "Grammarly checks writing for grammar, punctuation, spelling and tone. Its homepage lists paragraph rewrites, tone suggestions, proofreading, a humanizer agent and an AI detector agent, along with an AI assistant. The product works in a browser extension, a desktop app, a mobile app and Grammarly Docs, its own web editor.\n\nThe pricing page lists Free at $0 a month, with spelling and grammar checks and 100 AI prompts. Pro is listed at $12 a month with a 7-day free trial, and Enterprise pricing is handled through sales. Grammarly fits people who write across many apps and want corrections in place, while a dedicated editor suits long manuscripts better."
        },
        {
            "slug": "harper",
            "name": "Harper",
            "kind": "app",
            "website": "https://writewithharper.com/",
            "page": "https://listme.name/software/harper",
            "tagline": "Open-source grammar checker that runs on your own device",
            "summary": "Harper is a free, open-source grammar and spell checker that runs locally on your device. It has browser extensions for Chrome, Edge and Firefox, and plugins for VS Code, Obsidian and Neovim. The code is licensed under Apache-2.0 and published on GitHub.",
            "platforms": [
                "macos",
                "browser-extension"
            ],
            "pricing": "open-source",
            "price_note": "Free and open source under Apache-2.0; no paid tier listed",
            "free_to_use": true,
            "open_source": true,
            "license": "Apache-2.0",
            "source": "https://github.com/Automattic/harper",
            "strengths": [
                "Free and open source under Apache-2.0",
                "Checks run on your device, with no telemetry",
                "Fast enough for live checks as you type"
            ],
            "limits": [
                "Desktop app is listed for macOS only",
                "No AI rewriting or tone suggestions"
            ],
            "checked": "2026-10-10",
            "connected_to_publisher": false,
            "overview": "Harper checks spelling, capitalization, awkward phrasing and broken grammar, and it covers US, UK, Canadian, Australian and Indian English. The project says every check runs on the device, with no cloud round-trip and no telemetry. It is written in Rust, which keeps checks fast enough to run as you type.\n\nHarper is distributed as a macOS desktop app, as Chrome, Edge and Firefox extensions, and as plugins for VS Code, Obsidian, Neovim and Zed. Its source is on GitHub under Apache-2.0. The project says no language model runs in the loop, so Harper does not offer AI rewrites or tone suggestions. The desktop app is listed for macOS only."
        }
    ],
    "differences": [
        "Only Harper runs on macOS.",
        "Only Grammarly runs on iOS.",
        "Only Grammarly runs on Android.",
        "Only Grammarly runs on Web.",
        "Harper is open source; Grammarly is not.",
        "Grammarly: free plan, paid upgrades. Harper: free and open source."
    ],
    "shared_rankings": [
        {
            "list": "grammar-and-proofreading-tools",
            "name": "Grammar and proofreading tools",
            "page": "https://listme.name/best/grammar-and-proofreading-tools",
            "of": 10,
            "results": [
                {
                    "product": "grammarly",
                    "rank": 1,
                    "score": 92.5,
                    "verdict": "Broadest reach: a browser extension, apps and a free plan that covers spelling and grammar. Tone and AI rewrites need Pro, and Harper keeps its checks on your device.",
                    "best_for": "Everyday grammar checks across browsers and apps",
                    "spec": {
                        "where": "Browser extension, apps and web editor",
                        "rewrites": "AI rewrites need the Pro plan",
                        "style": "Tone suggestions"
                    }
                },
                {
                    "product": "harper",
                    "rank": 3,
                    "score": 89.5,
                    "verdict": "Free, Apache-2.0 open source, with checks that run on your device. It covers grammar and spelling only, and its desktop app is listed for macOS.",
                    "best_for": "Private, free grammar checks on your own device",
                    "spec": {
                        "where": "On your device, in browsers and editors",
                        "rewrites": "None; no AI model in the loop",
                        "style": "Grammar and spelling only"
                    }
                }
            ]
        }
    ],
    "ranks_higher_in_closest_shared_list": "grammarly",
    "page": "https://listme.name/compare/grammarly-vs-harper",
    "json": "https://listme.name/api/v1/compare/grammarly-vs-harper.json",
    "notes": [
        "Scores are editorial and only comparable inside one list. Products with connected_to_publisher true receive a disclosed ranking lift: https://listme.name/methodology"
    ],
    "source": "https://listme.name",
    "license": "Free to read and cite with attribution to listme.name.",
    "docs": "https://listme.name/developers"
}