Gorby vs GrammarBot

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.

ZeroGPT is an AI content detection platform with a text AI detector, AI image and video detectors, AI humanizer, plagiarism checker, and a set of writing tools including paraphraser, summarizer, grammar checker, translator, and citation helper.

GPTZero is an AI detection platform for identifying machine-generated text. It combines a text detector with a Chrome extension, a plagiarism checker, writing-process verification, and educator-focused classroom tools.

結合同儕級學術校對、抄襲比對與 AI 寫作工具

一次掃描完成 AI 偵測、抄襲比對與內容品質評估

ProWritingAid is a writing platform that combines line-level grammar and style checking with planning, manuscript analysis and story critique tools aimed at novelists, students and professional writers.

支援句子級洞察的多語言 AI 檢測工具

用可讀性與文法回饋，寫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.

專項更強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.

專項更強專為學術英語打造的 AI 寫作與校對，直接融入 Word 與 Overleaf

免費的線上文法、拼字與標點檢查工具