The best writing assistants in 2025
AI writing assistants are smart tools that help people write better. They use advanced technology to understand how humans write and offer suggestions and corrections in real-time. They can help with organizing thoughts, improving grammar, suggesting ideas, and making writing more clear and professional.
Sider: AI Research Agent & Extension
—Deep Research Agent & AI Research Browser Extension
Sider Deep Research Agent mimics human research process: scanning 100+ relevant sources and creating visualized reports. It automatically reflects on findings, highlights key information, takes inspirational notes, and saves above all materials to Wisebase—an evolving AI knowledge base that grows with you. For on-the-go research, Sider AI browser extension brings powerful tools anywhere you browse online, putting instant research assistance at your fingertips.
Bear is a beautiful, powerfully simple Markdown note taking app to capture, write, and organize your life. Take notes, plan your day, journal thoughts, organize tables, create lists and tasks, sketch ideas, link notes together, write a book, and much more. Bear is used by writers, lawyers, chefs, CEOs, teachers, doctors, engineers, students, parents... you get the picture. Getting started couldn't be faster—no signup and no account. Just open a note and write naturally.
Novel is an open-source Notion-style WYSYWIG editor with AI-powered autocompletions ✨ Built with Next.js Tiptap, OpenAI, and the Vercel AI SDK: https://sdk.vercel.ai/docs
Capacities
—A studio for your mind
Like an artist's studio, Capacities is a place for all your information. It stores your knowledge and can resurface it, right when you need it.
AI Writer: Essay Email Writing
—ChatGPT App in your Pocket
AI Writer generates high-quality content that is tailored to your needs in just seconds. Whether you need to craft a persuasive essay or a professional email, AI Writer has got you covered. Download now and unleash your full writing potential!🙌
Writesonic
—Articles, blog posts and SEO AI writerWritesonic's AI writing assistant, you can generate high-quality, human-level blog posts, article, landing pages, emails, product descriptions, digital ads and more in seconds. All you have to do is to enter any topic of your choice and you're done.
Logically
—The all-in-one workspace for writing and researchingLogically.app (formerly Afforai) is an award winning, all-in-one workspace for collaborative researching and writing. Many institutions worldwide have partnered with Logically to provide their students and researchers with an easy-to-use platform to manage references, conduct literature reviews, annotate files, take notes, and write papers. Logically is used globally by over 100,000 students, faculty, and researchers, including many at leading universities.
Grammarly is a technology company that develops a digital writing tool using artificial intelligence and natural language processing. The Grammarly Keyboard goes where you go to make sure your writing always looks great. Whether you’re typing up an urgent email, an important LinkedIn message, or an essential Facebook post, Grammarly lets you write from your mobile device with confidence.
AISEO
—Writing AssistantContemporary AI service for self-writing blog posts, essays and product descriptions. Focus on what's important.
Helperbird
—Your reading & writing accessibility assistantProviding personalized support for browsing, reading, and writing on the web. Whether you're reading a movie review or writing an email, Helperbird can make web pages, PDFs, and documents more accessible and productive to meet your needs
