Alternatives to Smodin
An online AI writing toolkit with an AI detector, humanizer, plagiarism checker and rewriting tools. The listings below can replace it for an important use case. Each note says what changes if you switch.
The original
Smodin
An online AI writing toolkit with an AI detector, humanizer, plagiarism checker and rewriting tools.
Replacements
Listings that take over the same core job as Smodin.
Quetext
A web plagiarism checker and AI detector with grammar, summarizing and citation tools.
Quetext combines plagiarism and AI detection with a citation generator and grammar checker, and adds a Chrome extension and REST API.
GPTZero
An AI content detector that estimates whether text was written by ChatGPT, Claude, Gemini or other models.
GPTZero adds sentence-level AI highlighting and writing replay in Google Docs with a Chrome extension, but no humanizer.
Originality.ai
An AI text detector and plagiarism checker for publishers and content teams, with browser extensions.
Originality.ai adds readability and fact checks, writing replay and Chrome and Firefox extensions, with free use limited to three scans a day.
ZeroGPT
A web tool that estimates whether text was written by AI, with extra writing utilities.
ZeroGPT is a free browser AI detector with image and video checks and many writing utilities on one site.
Winston AI
An online AI content detector and plagiarism checker for text from ChatGPT, Claude, Gemini and other models.
Winston AI pairs AI detection and plagiarism checks with separate education, SEO and writer workflows, requiring an account for full use.
Copyleaks
A plagiarism checker and AI content detector for text, code and other media.
Copyleaks is a paid plagiarism and AI detector covering source code, video, audio and images, aimed at institutions and businesses.
QuillBot
An AI writing tool for paraphrasing, grammar checking, summarizing and generating citations.
QuillBot centres on paraphrasing, grammar, summarizing and citations with desktop and mobile apps, without AI or plagiarism detection listed.
Also worth comparing
These listings name Smodin as their own alternative, so the relationship runs both ways.
WordAi
An AI text rewriter that restructures sentences to produce new versions of existing content.
Smodin provides rewriting tools plus an AI detector, humanizer and plagiarism checker in one web tool and can be tried without an account.
Similar software
Related functionality, not a direct replacement.
Grammarly
An AI writing assistant that checks grammar and spelling and suggests rewrites and tone changes.
Paperpal
An AI academic writing tool with grammar checks, citations, paraphrasing and journal submission checks.
Trinka
An AI grammar checker and writing assistant aimed at academic and technical writing.
