eslint-plugin-jsx-a11y vs Port Authority

eslint-plugin-jsx-a11y is a free MIT-licensed package that uses ESLint to statically inspect JSX for accessibility issues in React applications. Its rules cover alternative text, ARIA properties, values, roles and requirements, labels, keyboard access, and captions for audio and video. It can flag clickable non-interactive elements without keyboard listeners and interactive handlers on elements that are not focusable. Recommended and strict configurations are documented for legacy .eslintrc files and flat eslint.config.js files. Configuration can map custom component names to DOM element types and DOM attributes to JSX properties, allowing those abstractions to be checked. An optional polymorphicPropName setting is supported, although the project warns that polymorphic components can be harder to maintain. Installation instructions cover npm and Yarn and require ESLint. The plugin analyzes static code rather than rendered DOM. Its maintainers recommend pairing it with @axe-core/react and assistive-technology testing. It has no manual review tools, mobile testing, browser extension, or remediation guidance. The repository links to Tidelift for professional support.

Port Authority is a free Android port scanner for discovering network hosts and viewing network information. It discovers LAN hosts and public IP addresses, then scans TCP ports on LAN and WAN hosts with custom ranges. Network tools include MAC-address vendor detection, DNS record lookups, and Wake-on-LAN for local hosts. Lightweight SSH and HTTP(S) fingerprinting identifies server type and version. The maker describes host discovery as typically taking less than five seconds and scans as heavily threaded. The app says it has no ads or analytics trackers and does not track, collect, or share data. It requires limited permissions for network interaction. Public IP detection uses the maker’s open-source stateless service. The free app is GPL-3.0 licensed; a 4.99 USD once donation plan has the same features.