Harper

Lexicon is a free, open-source, local-first writing assistant and distraction-free rich-text editor for Windows, macOS, and Linux. It provides inline proofreading through the separate LanguageTool engine, while local AI tools handle rewriting, tone adjustment, summarization, and other writing tasks without requiring an account or cloud writing service. Users can review suggestions in a dedicated panel, format drafts with rich text and LaTeX, autosave work, and export it to Markdown, HTML, text, or PDF. The app can download and run a local AI model or use an existing local Ollama server; the editor and proofreading tools work without an AI-model download. It is MIT-licensed, and the repository notes that its Windows builds are unsigned and its macOS build is pre-release and unsigned.

A local command-line reference and checker for common signs of machine-written prose. It provides before-and-after examples, draft scanning, searchable patterns, and an editing guide.

Human Review is a local visual review tool and agent skill for editing HTML and Markdown files, reviewing localhost pages, and sending feedback to an AI coding agent. It opens a file or URL in a browser, where users can edit text and basic formatting, rearrange or remove page elements, resize or paste images, and attach comments to exact phrases, images, charts, or sections. Direct HTML edits and image changes save automatically; Markdown and localhost reviews are sent to the agent, which applies the changes to the source and refreshes the page. The tool includes CLI commands for review sessions, polling, status, and setup, plus a local server, editing and feedback SDK, browser client, Markdown renderer, and instructions for agent harnesses such as Claude Code and Codex. It runs on the user's computer without an account, cloud service, database, or API key.

SlopMonster is a Python linter for detecting formulaic or suspicious AI-generated writing in HTML pages, Markdown, plain text, landing pages, READMEs, emails, and scripts. Its scorer checks AI-associated vocabulary, sentence constructions, punctuation cadence, rule-of-three rhythms, and unsupported sales claims, assigns a score out of 5, and can fail a build when copy scores below 5/5. Its workflow scores the draft, performs a three-pass rewrite that removes suspect vocabulary and sentence shapes and replaces them with specific copy, sends the draft to a different model family for cleansing, and scores the result again. The cleansing script can use a Codex or Claude CLI, refuses to route a draft back to its own model family, and prints a prompt when no supported rival CLI is available. A GitHub Actions workflow is included as a reusable build gate; the scorer itself uses only Python's standard library, while the cleansing step requires an external AI CLI or manual prompt handling. The repository also includes regression tests, a catalogue of detection rules, rewrite principles, and worked before-and-after examples. It is distributed under the MIT license and can also be installed as an agent skill for Claude Code or used by other agents through its plain-Markdown instructions.

Rust is a systems programming language and toolchain developed by the Rust project. Its compiler, standard library, documentation, package manager and build tool Cargo, formatter rustfmt, linter Clippy, and editor support are maintained in the main repository. The language uses a rich type system and ownership model to enforce memory and thread safety at compile time, while targeting fast, memory-efficient software for critical services, embedded devices, and integration with other languages. Rust is primarily distributed under the MIT and Apache 2.0 licenses, with portions under BSD-like licenses.