I Found a New Open Source Grammar Checker Tool And I Like it... Well... Kind of

Harper is a new open source grammar checker developed by an Automattic developer that processes text locally without sending data to cloud servers. Available as browser extensions and plugins for VS Code and Obsidian, it offers spell checking, repetition detection, and grammar correction with color-coded error types. While faster than cloud-based alternatives due to local processing, Harper has limitations in handling complex grammatical errors and may produce false positives with brand names. It serves as a solid privacy-focused alternative for casual users who don't need advanced AI writing features.