InstaText

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.

特化型可読性と文法のフィードバックで、力強く明快な文章を

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.

特化型書く場所すべてで、インパクトのある文章を

学術校正・盗用チェック・AI ライティングツールを一つの場所に

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.

特化型機械的な文章を自然に整える無料AIヒューマナイザー

特化型Word と Overleaf に直接統合された、学術英語のためのAIライティングと校正

paraphrasing.io is a browser-based AI paraphrasing tool that rewrites essays, emails, sentences, and paragraphs in seven modes, backed by a suite of related writing utilities.

Reescribirtextos.net is a free Spanish-language AI rewriter that paraphrases text, changes words and removes plagiarism while keeping the original meaning.

特化型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.

特化型無料で使える AI による言い換え・書き直し・文法改善