Writing assistant AI tools with API

Clico is a browser extension that brings AI writin...

Clico is a browser extension that brings AI writing assistance directly into any text field on your current webpage. It can summarize content, draft replies, and rewrite text using the visible page as context, all without leaving your tab.

AITextTune is a Windows AI writing assistant offer...

AITextTune is a Windows AI writing assistant offering system-wide, hotkey-triggered editing for grammar correction, clarity and style transformation, summarization, reader-level rewrites, and 25+ language translation, with custom styles, chat refinement and optional Gemini integration.

Essaytoneis a real-time local editor that humanize...

Essaytoneis a real-time local editor that humanizes AI-generated essays and research writing by converting robotic phrasing into natural academic prose while preserving citations, references, and document structure.It detects AI-patterns, offers tone controls (formal, persuasive, analytical, descriptive), supports English, French, German, Italian, and Spanish, and helps students, researchers, and educators reduce AI-like signals without full rewriting.

ChatGPT Mac is a macOS-native AI writing assistant...

ChatGPT Mac is a macOS-native AI writing assistant that enhances productivity with voice-to-text capabilities, quick text editing, support for over 100 languages, and customizable commands, all while ensuring user privacy and easy accessibility through keyboard shortcuts.

Novel Vision AI is a versatile writing assistant t...

Novel Vision AI is a versatile writing assistant that streamlines story creation and visual generation. It supports multiple languages and genres, offers contextual writing suggestions, and includes export options for professional formats like PDF and LaTeX.

Sapling offers a language‑model API that delivers ...

Sapling offers a language‑model API that delivers real‑time grammar corrections in enterprise workspaces and messaging platforms. Developers embed it into editors, CRMs, and customer‑service tools with a simple SDK/API, while the platform supports private cloud, encryption, PII redaction, SSO, and self‑hosted deployment.

Haye is a macOS chat assistant that lets users que...

Haye is a macOS chat assistant that lets users query multiple large‑language models—GPT‑5, Claude 4.5, DeepSeek R1, Gemini 2.5 Pro—via text, images, PDFs, or local files, with a global Command + E trigger, web‑search support, and comparable answers.

WriteGo AI Research & Writing is an academic‑writi...

WriteGo AI Research & Writing is an academic‑writing platform that generates structured essays with MLA, APA, and Chicago citations, offers a citation generator, grammar checker, paraphraser, summarizer, multilingual translator, and scholar search to streamline research and drafting.

Wizzygen is an AI assistant that integrates with N...

Wizzygen is an AI assistant that integrates with Notion. It reads, summarizes, drafts, and edits page content using a Google API key. Users select chat modes to quickly generate or modify entries, streamlining writing and project management tasks.

Writeseed is an AI writing assistant featuring 70+...

Writeseed is an AI writing assistant featuring 70+ templates for blogs, ads, and sales copy. Users select from GPT‑5, Gemini, Claude, or Llama, train brand‑specific models, and receive SEO insights, paraphrasing, image design, and export in 35 languages.

Writetone is an AI writing assistant that transfor...

Writetone is an AI writing assistant that transforms tone, paraphrases, summarizes, and corrects grammar for academic, business, and creative writing. It includes an AI tutor, citation generator, and supports Chrome, Word, and API integration.

Kerlig is a macOS‑native AI assistant that edits, ...

Kerlig is a macOS‑native AI assistant that edits, proofreads, summarizes, and generates content across apps via a hotkey. It supports 350+ cloud and local models, custom presets, and works with PDFs, Word, and web pages.

re:write transforms text using the ChatGPT API, of...

re:write transforms text using the ChatGPT API, offering single‑click revisions, version comparison, and web or API access for quick clarity and flow improvements across emails, documents, and notes for professionals, students, and content creators.

Helpix AI optimizes customer service by providing...

Helpix AI optimizes customer service by providing smart, channel-agnostic responses. Its sophisticated NLP guarantees precise and flawless communications for enhanced sales and superior customer engagements.

Penparrot is an AI writing tool with ChatGPT Turbo...

Penparrot is an AI writing tool with ChatGPT Turbo, offering quick rewriting, summarizing, and translating. It integrates with emails, documents, coding platforms, and allows custom shortcuts for efficient writing.

Chippy is a Chrome extension that embeds ChatGPT d...

Chippy is a Chrome extension that embeds ChatGPT directly into the browser, letting users ask questions, summarize pages, research topics, translate text, and draft emails instantly while staying on the current tab.

Anki Card Generator simplifies card creation with ...

Anki Card Generator simplifies card creation with AI technology. It uses GPT-4 API to swiftly generate custom Anki cards for studies or professional development, enhancing learning efficiency and saving time.

Video To Blog converts YouTube links or uploads in...

Video To Blog converts YouTube links or uploads into ready‑to‑publish blog posts in under a minute, supporting 30+ languages. It formats prose, adds headings, SEO metadata, and embeds, and outputs HTML, Markdown, PDF, or links.

Hix.ai is a versatile AI writing platform featurin...

Hix.ai is a versatile AI writing platform featuring tools like Articlegpt and Browsergpt for optimized article generation and smooth web integration, respectively, enhancing writing productivity and search engine optimization.

Grammarly Business is an AI writing assistant that...

Grammarly Business is an AI writing assistant that checks grammar, punctuation, and style in real‑time across emails, documents, and social media. It analyzes tone, scans for plagiarism, offers SSO and 2FA, and integrates with Gmail, Office, Slack, Salesforce, and more.

ReadyRunner is a GPT‑3/4 desktop and web app that ...

ReadyRunner is a GPT‑3/4 desktop and web app that offers Assistant, ScratchPad, and Document Chat modes for instant AI help. It supports hotkeys, editable code, context management, model switching, and quick memory clearing to boost workflow.

AutoBlogging Pro automatically generates SEO‑optim...

AutoBlogging Pro automatically generates SEO‑optimized blog posts in 50+ languages, providing structured headings, meta tags, and keyword‑rich content. It supports scheduled publishing to WordPress, Ghost, Medium, or exports to HTML/Markdown, and tracks engagement via analytics.

Autoblogging.ai automates multilingual article cre...

Autoblogging.ai automates multilingual article creation, bulk generation via CSV, and SEO optimization. It offers competitor analysis, LSI keyword extraction, semantic SEO, and one‑click publishing to WordPress, Medium, Dev.to. Built‑in proofreader, API, Zapier support enable automated workflows.

Dashword automatically generates structured conten...

Dashword automatically generates structured content briefs from audience, tone, brand guidelines, and keyword focus. It compiles outlines, suggests keyword clusters, recommends optimal article length, offers downloadable templates, and supports collaborative editing for streamlined writer alignment.

Writefull X is an AI writing suite for academia, o...

Writefull X is an AI writing suite for academia, offering title and abstract generators, a paraphraser, and an Academizer that converts informal text into formal scholarly language. It integrates with Word and Overleaf for real‑time editing and encrypts data for privacy.

Titan is a GPT-3 add-in for Microsoft Word that al...

Titan is a GPT-3 add-in for Microsoft Word that allows users to access the power of GPT-3 to transform their writing with just a few clicks.

Text Assistant is a macOS Ventura app that lets us...

Text Assistant is a macOS Ventura app that lets users create, store, and reuse custom prompts for writing tasks. It offers an unlimited prompt library, shortcut support, quick copy/share, and integrates with OpenAI via user API key.

Davinsiri is a tool that generates three responses...

Davinsiri is a tool that generates three responses per Siri trigger using advanced Siri shortcuts and GPT-3.5 turbo model from OpenAI, offering custom features and a 30-day trial period for quick and effortless content creation.

Wordmax AI Writer is a content generation tool tha...

Wordmax AI Writer is a content generation tool that uses AI to assist in writing optimized content in 40 languages and generates unique content in seconds. It offers a free trial plan and custom packages for teams or businesses.

Chibi AI lets writers create custom AI personas th...

Chibi AI lets writers create custom AI personas that match their voice, with document‑ and project‑level memory for consistent tone. It integrates with OpenRouter, offering many open‑source models, and blends word‑processing with AI commands for streamlined content creation.