harper Releases

This release adds TeX and derivative language support, Groovy support for comments, numerous new grammar rules, and various improvements to the Chrome extension and Obsidian plugin.

Feb 18, 2026

This beta release introduces app endpoints and Stripe customer session handlers to the v3 API, alongside improvements to ClickHouse query precision. It also includes a range of bug fixes addressing subscription sync, customer lookups, and various invoicing issues.

Feb 12, 2026

This release adds Zig programming language support, new grammar rules for common mistakes, and Obsidian plugin improvements for regex-based text masking.

Feb 11, 2026

This is a maintenance release that targets specific firmware updates for a variety of flight controllers, including AIRBOTG4AIO, AXISFLYINGH743PRO, and various Radiolink and Hobbywing models.

Feb 8, 2026

This major release introduces Weirpacks for packaging linting rules, adds AsciiDoc support, enables Firefox CSS Custom Highlights API, and includes significant performance improvements.

Feb 4, 2026

This patch release fixes a bug in the Chrome extension related to incorrect dialect selection and reversion.

Jan 22, 2026

This major release introduces the Weir language for writing linting rules, creates the harper-thesaurus, and adds extensive grammar improvements across multiple categories.

Jan 22, 2026

Bug fixes for Chrome extension and Obsidian to improve stability and feature support.

Jan 8, 2026

Adds Indian English dialect implementation and general grammar improvements.

Jan 6, 2026

A major feature release introducing autonomous flight capabilities such as Altitude Hold, Position Hold, and Collision Detection. It also brings significant enhancements for fixed-wing flying, including S-term and airspeed-based TPA, alongside new hardware support for Raspberry Pi PICO and APM32F40X.

Dec 25, 2025

Adds Daml support and UI updates including version display in the popup.

Dec 22, 2025

New linting rules for title-casing and irregular verbs, plus Obsidian UI improvements.

Dec 11, 2025

This release focuses on dependency updates, core grammar rule refinements, and bug fixes for spell checking and specific corrections like 'wish x can' to 'wish x could'. It also includes updates to the Chrome extension and language server support for the 'octo' filetype.

Dec 3, 2025

A significant update adding various linter rules and grammar corrections, including detection of improper use of 'need to <nominal>' and 'these' vs 'theses'. It also includes improvements to the Chrome extension and CLI functionality.

Nov 24, 2025

This release introduces new grammar rules like 'more bigger' corrections and a linter for 'call as <pronoun>'. It also updates the web interface to use Quill and adds dark mode to the Chrome extension.

Nov 14, 2025

Focuses on broader language support (synced language support), new linters like `SplitWords`, and improvements to the VS Code extension and Obsidian plugin. It also adds testimonials to the website.

Nov 6, 2025

A maintenance release that resolves a regression related to comment nesting in code fences and nunjucks, alongside a minor update to the package.json repository field format.

Oct 31, 2025

A performance-focused release that includes multiple optimizations to caching, archy, and Swig tag processing, along with fixes for TOC anchors and missing tags/categories.

Oct 26, 2025

Primarily a maintenance release fixing issues with CSS conflicts in the Chrome extension, Obsidian file handling, and improving diagnostics in the language server.

Oct 24, 2025

Introduces a new rule for detecting missing nouns and adds feedback mechanisms to the web interface. It also includes dependency updates and a parser for `jjdescription`.

Oct 22, 2025