Writing and content

WRITING9 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-2.1Open-source style and grammar checker with a ready-to-run server and user interfaces for checking text.Open on GitHub Automattic/harper14,232Apache-2.0Privacy-first, offline Rust-powered grammar and spelling checker for fast local text correction.Open on GitHub

What you give up either way

Proprietary dataset and algorithms "tested on thousands of essays" (claimed)
Existing user base and trust signals ("Trusted by 47,755 students")
Commercial polish, bonuses and integrated extras (speaking simulator, eBook, etc.)
100% money-back guarantee and any associated refund handling

An open-source project doing the core job proves a replacement is possible. It does not prove it matches WRITING9, and it does not prove anyone has run it for a month. How we decide.