Language Tool – open-source Grammarly Alternative

• vim-grammarous

  5 1,074 0.0 Vim Script

  A powerful grammar checker for Vim using LanguageTool.

  If you're a Vim user, install the vim-grammarous[0] plugin to get LanguageTool powered grammar checking at the speed of thought.

  [0] https://github.com/rhysd/vim-grammarous

• languagetool

  310 11,529 10.0 Java

  Style and Grammar Checker for 25+ Languages

  

  No subscription is required for the base version no account, either. Of course, the base version doesn't have all the features as premium, but it is still excellent, in my opinion. I have used the free version for years. There is an offline version, as it is open source.

  The full text isn't stored on the servers, but you can always just deploy it yourself for maximum privacy:

  https://dev.languagetool.org/http-server

  Furthermore, there are options for docker: https://github.com/languagetool-org/languagetool#docker

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• vale

  46 4,161 9.3 Go

  :pencil: A markup-aware linter for prose built with speed and extensibility in mind.

  

  I'm fond of Vale, where you can write your own rules or grab others off github. I wish we could crowd source a grammarly clone using it. Some efforts have been made to do so, but didn't get far.

  https://github.com/errata-ai/vale

  https://github.com/testthedocs/Openly

• nlprule

  5 570 0.0 Rust

  A fast, low-resource Natural Language Processing and Text Correction library written in Rust.

  check out nlprule, it's LanguageTool alternative written in Rust

  https://github.com/bminixhofer/nlprule

• prosemd-lsp

  5 160 0.0 Rust

  An experimental proofreading and linting language server for markdown files ✍️

  and if you're into Markdown, i can also recommend prosemd

  https://github.com/kitten/prosemd-lsp

• Emacs-langtool

  9 367 0.0 Emacs Lisp

  LanguageTool for Emacs

  There’s already Emacs package, but it works only with offline version.

  https://github.com/mhayashi1120/Emacs-langtool

  Now that I checked, looks like there’s another package, but I didn’t t try it.

  https://github.com/emacs-languagetool

• errant

  2 410 4.5 Python

  ERRor ANnotation Toolkit: Automatically extract and classify grammatical errors in parallel original and corrected sentences.

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• vim-LanguageTool

  6 273 0.0 Vim Script

  A vim plugin for the LanguageTool grammar checker

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