Build or Bill

Writing and content

QuillBot alternatives

2 open-source projects that already do this job. Free to use - not free to run, which is what the numbers on the right are for.

The full assessment →

The projects

languagetool-org/languagetool14,772LGPL-2.1Style and grammar checker supporting 25+ languages with a usable server and web UI.Open on GitHub theJayTea/WritingTools2,397GPL-3.0System-wide desktop grammar assistant that provides writing suggestions using local and cloud LLMs.Open on GitHub

What you give up either way

  • Proprietary models and specialized detectors (e.g., Quillbot-trained behaviors)
  • Polish and breadth of many ancillary tools (image generator, plagiarism checker, citation generator)
  • Large user-base integrations, browser extensions, and ecosystem reach

An open-source project doing the core job proves a replacement is possible. It does not prove it matches QuillBot, and it does not prove anyone has run it for a month. How we decide.