Outwrite vs Writers-Copilot

QuillBot is an AI writing suite best known for its paraphrasing tool. Users paste or type text and have it rewritten in different tones and styles, while companion tools handle grammar checking, summarizing, citations, plagiarism checks and AI content detection. It is widely used by students, writers and professionals.

集学术校对、查重与 AI 写作工具于一体

既是语法检查器，也是写作技艺教练

Jenni is an AI research and academic writing workspace that helps students, researchers, and academics read, write, and cite in one place. Bring in PDFs or import a Zotero or Mendeley library, and Jenni's autocomplete suggests sentences grounded in your own sources, with every suggestion linked to the exact page and paragraph. A built-in writer, AI chat, citation engine covering 10,000+ styles, and a Reviews tool for catching weak or unverified claims make it a full environment for producing cited papers.

用可读性与语法反馈，写出更清晰有力的文字

Type.ai is an AI writing assistant and full document editor for long-form creative writing, built for authors, novelists and screenwriters who need to draft and revise book-length work in one place.

支持七种改写模式的免费 AI 改写工具

Wordtune is an AI writing assistant from AI21 Labs that rewrites and tightens your sentences in one click, checks grammar, sums up documents and translates other languages into natural English.

用于改写、人性化与消除抄袭的西班牙语 AI 改写工具

Trinka is a privacy-first AI writing assistant built for academic and technical writing. Beyond grammar, it handles paraphrasing, consistency checks, file proofreading for Word and LaTeX, citation formatting and quality checks, plagiarism and AI detection, journal finding, and translation across 30+ languages.

专为学术英语打造的 AI 写作与校对，直接融入 Word 与 Overleaf

免费的在线语法、拼写与标点检查工具