LanguageTool15.2k

languagetool-org/languagetool

Open sourceFreeProductivity & NotesSelf-hosted

What is LanguageTool?

Open-source proofreader that checks spelling, grammar and style in more than 25 languages. It has 15,233 stars on GitHub and ranks #70 in Productivity & Notes. You can host it on your own server and keep your data.

GitHub description: Style and Grammar Checker for 25+ Languages

Platforms

WebCommand lineBrowser extension

Top alternatives for LanguageTool

#909

Harper17.4k

Fast grammar checker written in Rust that runs fully offline, so your text never leaves your device.

Productivity & NotesWindowsMacLinuxCommand lineBrowser extension

#1311

Saladict13.4k

Browser extension with a pop-up dictionary and page translator supporting many dictionaries.

Productivity & NotesBrowser extension

More Productivity & Notes

MarkItDown194k

Tool that converts Office documents, PDFs and other files into Markdown text.

Command line

Stirling PDF95.8k

Tool for merging, splitting, converting and editing PDF files on any device.

Self-hostedWindowsMacLinuxWebDocker

MinerU83.2k

Converts PDFs and Office documents into LLM ready Markdown or JSON.

Self-hostedWebDockerCommand line

AppFlowy78.2k

Open source Notion alternative with AI for notes, wikis and projects.

Self-hostedWindowsMacLinuxAndroidiPhone

Tesseract77.4k

Command line OCR engine that extracts text from images and scanned documents.

WindowsMacLinuxCommand line

AFFiNE74.2k

Workspace that merges notes, docs and whiteboards, a self-hostable Notion and Miro alternative.

Self-hostedWindowsMacLinuxWebDocker

Memos64.3k

Lightweight open source note-taking app you host yourself, with Markdown support for everyday thoughts.

Self-hostedWebDocker

MarkText63.6k

Simple and elegant Markdown editor with real-time preview for Windows, macOS and Linux.

WindowsMacLinux