Effie vs WriteMapper 4

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.

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.

Whimsical is a collaborative visual workspace that combines diagrams, flowcharts, mind maps, wireframes, documents and whiteboards on one infinite canvas, with AI tools that turn a prompt into a structured visual in seconds.

精致优雅的笔记、任务与文档空间，随时随地跨设备跟随你。

Mapify is an AI summarizer and mind-mapping tool that turns PDFs, YouTube videos, web URLs, podcasts, meeting recordings, images and pasted text into structured, editable mind maps. It works across web, mobile and a browser extension, and can also turn a finished map into a slide deck.

MindMap AI 是一款 AI 思维导图生成器，可从提示词、PDF、视频、音频或网页出发，输出结构化导图，既可手动编辑，也可在对话中持续打磨。手动制图永久免费，AI 点数才是付费部分。

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.

自带真实文献与自动引文的 AI 学术写作工具

在无限画布上通过对话生成思维导图、流程图与幻灯片

免费 AI 人性化改写，让机器文字读起来更自然

免费的一站式 AI 写作与文本优化工具箱