51 Private AI Writing Tools
Fifty-one AI writing tools that run entirely in your browser. Bring your own free or paid API key (OpenAI, Claude or Gemini) — your text goes straight from this tab to the provider. ToolWow has no server in the loop, no account, and never sees what you write.
How it works — and why it is private: The generate button calls the provider’s API directly from this page with your key. There is no upload step anywhere in the code — open your browser’s network panel and you will see the request going to api.openai.com / api.anthropic.com / generativelanguage.googleapis.com, never to toolwow.site.
How do I get a key?
- Create a free account at OpenAI, Anthropic (Claude) or Google AI Studio — one of the three.
- In that account’s settings, create an API key and copy it.
- Paste the key into the “Add your key” box at the top of any tool. It is stored only in this browser, only for you — you can remove it any time.
Essay Writer
Write a complete essay on any topic — private, in your browser, with your own AI key. No upload
Article Writer
Turn a title into a full article — headings, intro, body and conclusion. 100% in-browser with y
Paragraph Writer
Write a clear paragraph on any topic — one focused block of text, generated privately in your b
Story Generator
Generate a short story from a prompt — genre, length and point of view included. Private, in-br
YouTube Script Writer
Write a YouTube video script — hook, sections, and sign-off — from a video topic. Generated pri
Blog Post Generator
Generate a full blog post from a topic — SEO-friendly headings, intro and conclusion included.
Business Plan Generator
Draft a business plan for any idea — sections, structure and first-pass content. Private AI, in
Cold Email Writer
Write a short, non-spammy cold email — outreach, follow-up or partnership. Generated privately
Press Release Generator
Draft a press release — headline, boilerplate and quotes — from the facts of your news. Private
Podcast Script Writer
Write a podcast episode script — host intro, segments and wrap-up — from your episode topic. Pr
TikTok Script Writer
Write a short-form video script — hook, beats, captions — for TikTok, Reels or Shorts. Private,
Business Name Generator
Generate business name ideas for any product or service — with reasons each one works. Private
Business Slogan Generator
Generate slogans and taglines for your brand — short, memorable, and explainable. Private in-br
Content Planner
Generate a 30-day content plan — topics, formats and hooks — for your niche or brand. Private A
Content Brief Generator
Turn an article title into a full content brief — angle, outline, keywords, questions to answer
Blog Post Ideas
Generate 25 blog post ideas for your niche — with a one-line angle for each. Private, in-browse
Blog Outline Generator
Generate a detailed blog outline — H2/H3 structure, per-section notes, intro hook. Private AI,
Grammar Fixer
Fix grammar, spelling and punctuation in any text — corrected version plus a list of what chang
Content Improver
Improve clarity, flow and impact of any writing — your text back, sharper. Private in-browser A
AI Humanizer
Make stiff, AI-flavoured text sound like a person wrote it — natural, specific, unhurried. Priv
Content Paraphraser
Paraphrase any text into fresh wording with the same meaning — useful for drafts and summaries.
AI Rephraser
Rephrase a single sentence or short passage — 5 alternative wordings at once. Private, in your
Sentence Rewriter
Rewrite weak sentences into strong ones — get the fix plus a one-line reason it works. Private
Paragraph Rewriter
Rewrite a paragraph with better flow and structure — same message, tighter delivery. Private in
Content Summarizer
Summarize any long text into bullets or a short paragraph — key points without the padding. Pri
Content Shortener
Shrink long text to a target length — for limits, captions and executive readers. Private, in y
Tone of Voice
Rewrite any text in a specific tone — formal, friendly, bold, calm. Private AI editing in your
Explain Like I’m Five
Explain any complex topic in simple words — with one analogy and one example. Private AI, in yo
AI Translate
Translate text between languages with natural phrasing — not word-for-word. Private AI, your ke
Instagram Caption Generator
Generate Instagram captions — with hashtag suggestions — from your post details. Private AI, in
LinkedIn Post Generator
Write LinkedIn posts that read like a person, not a newsletter — hook line, body, CTA. Private
Twitter / X Post Generator
Generate tweets and X posts — one-liners, threads and reply ideas — from a topic. Private, in y
FB Ad Headline Generator
Generate Facebook ad headlines — 15 options across angles (pain, proof, offer, curiosity). Priv
Instagram Story Ideas
Generate 14 days of Instagram Story ideas — polls, behind-the-scenes, UGC prompts. Private AI,
Landing Page Copy
Generate full landing page copy — headline, sub-head, bullets, CTA, FAQ. Private AI writing in
FAQ Generator
Generate an FAQ list for your product, page or service — real questions, honest answers. Privat
Poll Generator
Generate poll questions for your audience — with 4 balanced options each. Private AI, in your b
Meta Description Generator
Generate meta descriptions that fit Google — under 160 characters, with a click reason. Private
Real Estate Description
Write a property listing description from your facts — honest, vivid, no agent fluff. Private A
Trivia Generator
Generate trivia questions with answers and one-line explanations — for quizzes, classrooms or p
NDA Generator
Draft a simple mutual NDA from your details — a starting template, with a clear “get a lawyer t
Privacy Policy Generator
Draft a privacy policy for your app or site — sections, data inventory, honest language. Privat
Purchase Agreement
Draft a simple purchase agreement for goods — parties, item, price, terms. Private AI template
Bill of Sale
Generate a bill of sale — a clean record of what changed hands, when, and for how much. Private
AI Detector (Heuristic)
A private heuristic check for AI-flavoured writing — an informed guess, clearly labeled, never
SEO Article Generator
Generate a long-form article around a target keyword — structure for search, written to read we
Post Writer
Write a blog post from a rough brief — your notes, your sources, shaped into a publishable arti
Title Rewriter
Rewrite a weak title — 10 alternatives with the hook made explicit. Private AI, in your browser
Article Rewriter
Rewrite an existing article — refresh the angle, fix the structure, keep the facts. Private AI
Blog Post Rewriter
Refresh a blog post for search and readers — new angle, tighter structure, preserved substance.
Paragraph Completer
Finish a paragraph you started — it picks up your style and carries it to a strong close. Priva