Alfa vs nnn

Alfa is a free, open accessibility testing engine for websites built with HTML, CSS, and JavaScript. It checks pages against accessibility standards such as WCAG, using included rules or pluggable rules in the ACT Rules Format. Developers can add custom rules and filter results by conformance level or WCAG version. Audit output follows the Evaluation and Report Language schema as JSON-LD, and the command-line interface can audit a single page and save results as JSON. Scraper and crawler tools create page representations and discover pages across a site or subdomain. Ready-made integrations cover frameworks and test tools including Angular, React, Vue, Cypress, Jest, Playwright, Puppeteer, Selenium, and WebdriverIO. Alfa is distributed as separate npm packages under the MIT license. It runs in ECMAScript 2022-compatible JavaScript environments, including recent Node.js and browser versions. Building from source requires Node.js 20 or later and Yarn. The project says most integrations are experimental and may change; older environments may be targetable from source but are not explicitly supported.

nnn is a terminal file manager designed to be small, fast and nearly zero-configuration. It handles copying, moving, deleting, archiving and linking selections, alongside batch renaming, disk-usage analysis, app launching and file picking. Navigation includes contexts, sessions, bookmarks and directory marks, while search options include instant filtering, fuzzy matching, regular expressions and string filters. It provides directory and text previews, and can create, list, extract and mount archives. Plugins can add functions such as live previews, disk mounting, file comparison and uploads. Remote mounts require optional sshfs or rclone dependencies. The project says nnn typically needs less than 3.5 MB of resident memory; it has no configuration file and uses defaults, with optional environment-variable settings. It is free and open source under the BSD-2-Clause license, and is listed for Android, Linux, macOS and Windows. The project offers packages and a statically linked binary, or users can compile it from source.