Is Nextline a Grammarly alternative?

Only for one slice of what Grammarly does, and it isn't the slice most people mean. Grammarly corrects and improves text that already exists. Nextline predicts text that doesn't yet — grey inline continuation you take with Tab. If you want your grammar checked, Nextline replaces nothing and you should keep Grammarly or try LanguageTool.

What is the best Grammarly alternative?

The best fit depends on which Grammarly job you want to replace. Choose LanguageTool for grammar and spelling, Hemingway Editor for readability, a text expander for exact reusable wording, or Nextline for inline sentence completion. Pick the job first and the shortlist becomes clearer.

Is there a free alternative to Grammarly?

A few, and it's worth knowing Grammarly's own plan starts at $0 with mistake correction, tone visibility, and 100 AI prompts, so "free" alone isn't a reason to leave. LanguageTool has a free version covering more than 30 languages, with deeper checking in seven major languages on Premium. Nextline is free during early access — that's a current state, not a permanent promise, and it buys you prediction, not proofreading.

Does Nextline check my grammar or fix my spelling?

No. There is no checker in it: no underlines, no corrections, nothing marked wrong. It reads the sentence in front of your cursor and suggests how it continues. Anything already typed, it leaves alone — including the typos.

Can I use Nextline and Grammarly at the same time?

Nextline and Grammarly act at different moments: Nextline suggests ahead of the cursor, while Grammarly reacts to existing text. We haven't tested every app and combination, so test both in any workflow you depend on.

What are the best apps like Grammarly for Mac?

For grammar, punctuation, style, and spelling, LanguageTool has a macOS app that works in Apple Mail, Notes, Messages, Microsoft Word, and other supported apps. For readability, Hemingway Editor scores your text and highlights complex sentences and weakening patterns, with grammar checking and AI fixes on Editor Plus. Grammarly's own Mac app is free to use with no time limit, which makes it hard to rule out on cost alone.

Does Nextline work on Windows, iPhone, or the web?

No. Nextline is a Mac app with no Windows, iOS, iPadOS, or web version. Grammarly runs on the desktop and in a browser across more than a million apps and programs, so if your writing ever leaves your Mac, that difference will probably decide this before anything else here does.

What does Grammarly cost, and what does Nextline cost?

Grammarly's Free plan is $0 and includes mistake correction, tone visibility, and 100 AI prompts. Pro adds full-sentence rewrites, tone adjustment, unlimited personalized suggestions, plagiarism and AI-text detection, and 2,000 AI prompts; Enterprise is contact-sales and adds organization controls. Nextline is free during early access. Prices move, so check Grammarly's own plans page before deciding on cost alone.

Alternatives

Grammarly alternatives

Nextline is not a grammar checker. It doesn't correct the sentence you wrote — it predicts the one you're still writing, on your own Mac. Grammarly is good at the job it does, and this page sends you back to it for that job. This page is about the words that aren't there yet.

Nothing here to correct yet

A Slack reply, a work email, a doc — half-finished lines with no mistakes in them, because the words don't exist yet. The grey text is Nextline's suggestion — press Tab to take it, or keep typing straight through it.

Stay with Grammarly if

Grammar, spelling, and punctuation are the actual problem you're trying to solve.
You want tone adjustment, clarity suggestions, or full-paragraph rewrites.
You write in more than one language — Grammarly documents real-time support in over 25.
You need plagiarism or AI-text detection, or organization-level controls.
You want generative drafts, outlines, or agents that work across apps and tabs.
You write on Windows, iPhone, or the web — Nextline is macOS only and can't follow you there.

Try Nextline if

What slows you down isn't errors — it's the blank half of the sentence in front of you.
You want the suggestion generated on your Mac, with nothing you type sent to a server.
You'd rather not create an account to get a suggestion.
You want grey inline text you take with Tab across supported Mac apps.
You want to try it without paying — Nextline is free during early access.

Side by side

Compared on the things that actually differ.

	Nextline	Grammarly
How you use it	Type, and the rest of the line appears ahead of the cursor	Write, and it flags mistakes and offers fixes, rewrites, and tone changes
The job it does	Predicts what comes next	Improves what you already wrote, and can generate new drafts on request
Grammar, spelling, punctuation	No — it doesn't check or correct anything	Yes, and it's the core of the product
Rewrites, tone, clarity	No	Yes — full-paragraph rewrites, clarity suggestions, tone adjustments
Drafts, outlines, agents	No — continuation only, never a whole draft	Yes — generative drafting and context-aware agents across apps and tabs
Plagiarism and AI-text detection	No	Yes, on the Pro plan
Languages	No documented language list	Real-time support in more than 25 languages, plus inline translation
What sees your writing	A model running on your Mac — nothing you type is sent to us	Grammarly says its algorithms analyze your text, writing behavior, and usage data
Where it works	Supported Mac apps; a few require setup	Desktop and browser — Word, Pages, email clients, and 1 million+ apps and programs
Platforms	macOS, and nothing else	Desktop and browser, well beyond the Mac
Price	Free during early access	Free plan at $0 with 100 AI prompts; Pro adds rewrites and 2,000 prompts; Enterprise is contact-sales

Nextline is not affiliated with Grammarly. Details checked on 28 July 2026 against their own site. Pricing moves — tell us if this has gone stale.

Four jobs, one brand name

Search for Grammarly alternatives and you’ll get lists that treat “writing tool” as a single category. It isn’t. Grammarly combines several jobs: correcting mistakes, rewriting existing text, generating from a prompt, and helping you continue a sentence. Nextline handles only the last.

Disclosure: we make Nextline. Grammarly, LanguageTool, Hemingway Editor, and TextExpander are not affiliated with us and haven’t reviewed this page. Every claim about them below comes from their own documentation, linked inline, and was checked on 28 July 2026.

What Grammarly is good at

Worth being plain about this, because a comparison page that pretends otherwise isn’t worth reading.

Grammarly describes itself as an all-in-one writing assistant that works on the desktop and in a browser — in Word, Pages, email clients, desktop applications, and browsers, across more than a million apps and programs. Its feature set covers proofreading, clarity suggestions, tone adjustments, full-paragraph rewrites, and AI agents that follow your work across apps and tabs. It offers real-time writing support in more than 25 languages, plus inline translation. The Mac app is free to use with no time limit, and the free plan is $0 with mistake correction, tone visibility, and 100 AI prompts.

That is a lot of ground, and Nextline covers none of it. Nobody should switch away from a grammar checker to a tool that doesn’t check grammar.

Pick the alternative by the job

Start with the job you want to replace. Each option below solves a different part of Grammarly’s broader feature set.

If the job is grammar, spelling, and punctuation — LanguageTool. It’s the closest like-for-like among Grammarly competitors: grammar, punctuation, style, and spelling, with a macOS app that works in Apple Mail, Notes, Messages, Microsoft Word, and other supported apps. There’s a free version and a Premium one, with more than 30 languages supported free and deeper checking in seven major languages on Premium. If you came looking for a Grammarly alternative for Mac in the literal sense, start here.

If the job is readability — Hemingway Editor. It’s an editor aimed at style rather than correctness: it scores readability and highlights complex sentences and weakening patterns, and Editor Plus adds advanced grammar checking plus AI fixes for readability, tone, length, and formality. It is a place to work on a draft rather than an inline continuation tool.

If the job is text you send verbatim, over and over — a text expander. Disclaimers, addresses, the same support reply for the ninth time this week. Neither Grammarly nor Nextline is built for exact recall; a snippet library is. Our TextExpander comparison covers that category, including two options that cost nothing.

If the job is inline continuation — Nextline. Nextline is designed for the moment when you have started a sentence and want help finishing it.

Nextline reads the active text field in supported Mac apps and places a grey continuation ahead of the cursor. Accept it or keep typing. Its model runs on your Mac, so the text it reads is not sent to us. Grammarly says it analyzes your text, writing behavior, and usage data while its products are active. These are different designs; if server-side text processing matters to you, compare both privacy policies before choosing.

If the suggestion you’re really comparing against is the grey text already in your inbox rather than an editing layer, the Gmail Smart Compose comparison is the closer read.

Where Nextline won’t help

It doesn’t check anything. No grammar, no spelling, no punctuation, no style warnings. Every tool named above beats it here, Grammarly included, and it isn’t in the running.
No rewrites, tone changes, or paraphrasing. It won’t rephrase a sentence you’ve written, soften an email, or shorten a paragraph. It only adds what comes next.
No plagiarism checking or AI-text detection. Grammarly sells both on Pro. Nextline has no equivalent.
It doesn’t write drafts for you. No prompts, no outlines, no agents. Continuation is a deliberately smaller job than generation, and it’s the only one on offer.
No documented language support beyond what you can test yourself. Grammarly documents more than 25 languages and inline translation; we publish no language list, so treat anything outside English as unverified.
It’s macOS only. Grammarly is on the desktop, in a browser, and across a very large number of apps. Nextline covers one platform.

What it does instead is finish the sentences nothing else was going to touch — the ones that aren’t wrong, just unwritten. It’s free to download during early access, and if it turns out what you needed was a proofreader, LanguageTool and Grammarly are both still there.

Questions people actually ask

Is Nextline a Grammarly alternative?: Only for one slice of what Grammarly does, and it isn't the slice most people mean. Grammarly corrects and improves text that already exists. Nextline predicts text that doesn't yet — grey inline continuation you take with Tab. If you want your grammar checked, Nextline replaces nothing and you should keep Grammarly or try LanguageTool.
What is the best Grammarly alternative?: The best fit depends on which Grammarly job you want to replace. Choose LanguageTool for grammar and spelling, Hemingway Editor for readability, a text expander for exact reusable wording, or Nextline for inline sentence completion. Pick the job first and the shortlist becomes clearer.
Is there a free alternative to Grammarly?: A few, and it's worth knowing Grammarly's own plan starts at $0 with mistake correction, tone visibility, and 100 AI prompts, so "free" alone isn't a reason to leave. LanguageTool has a free version covering more than 30 languages, with deeper checking in seven major languages on Premium. Nextline is free during early access — that's a current state, not a permanent promise, and it buys you prediction, not proofreading.
Does Nextline check my grammar or fix my spelling?: No. There is no checker in it: no underlines, no corrections, nothing marked wrong. It reads the sentence in front of your cursor and suggests how it continues. Anything already typed, it leaves alone — including the typos.
Can I use Nextline and Grammarly at the same time?: Nextline and Grammarly act at different moments: Nextline suggests ahead of the cursor, while Grammarly reacts to existing text. We haven't tested every app and combination, so test both in any workflow you depend on.
What are the best apps like Grammarly for Mac?: For grammar, punctuation, style, and spelling, LanguageTool has a macOS app that works in Apple Mail, Notes, Messages, Microsoft Word, and other supported apps. For readability, Hemingway Editor scores your text and highlights complex sentences and weakening patterns, with grammar checking and AI fixes on Editor Plus. Grammarly's own Mac app is free to use with no time limit, which makes it hard to rule out on cost alone.
Does Nextline work on Windows, iPhone, or the web?: No. Nextline is a Mac app with no Windows, iOS, iPadOS, or web version. Grammarly runs on the desktop and in a browser across more than a million apps and programs, so if your writing ever leaves your Mac, that difference will probably decide this before anything else here does.
What does Grammarly cost, and what does Nextline cost?: Grammarly's Free plan is $0 and includes mistake correction, tone visibility, and 100 AI prompts. Pro adds full-sentence rewrites, tone adjustment, unlimited personalized suggestions, plagiarism and AI-text detection, and 2,000 AI prompts; Enterprise is contact-sales and adds organization controls. Nextline is free during early access. Prices move, so check Grammarly's own plans page before deciding on cost alone.

Try it in the apps you already use

Runs on your Mac. Your text stays there — nothing sent anywhere.

Download for Mac See where it works →