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.

精緻優雅的筆記、任務與文件空間，跨裝置隨時跟著你。

把 PDF、影片、網頁與錄音轉成結構化 AI 心智圖

MindMap AI is an AI mind map generator that starts from a prompt, PDF, video, audio file or webpage and returns a structured map you can edit by hand or refine in chat. Manual mind mapping is free forever, and AI credits are the paid layer.

支援七種改寫模式的免費 AI 改寫工具

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.

自帶真實文獻與自動引文的 AI 學術寫作工具

在無限畫布上透過對話生成心智圖、流程圖與簡報

免費 AI 人性化改寫，讓機器文字讀起來更自然

免費的一站式 AI 寫作與文字優化工具箱