Next SEO is a plug in that makes managing your SEO easier in Next.js projects.

MIT License

next-seo

Elder.js is an opinionated static site generator and web framework for Svelte built with SEO in mind.

SEOstats is a powerful open source PHP library to request a bunch of SEO relevant metrics.

A fast, flexible, and small SEO-friendly lazy loader.

Express middleware for prerendering javascript-rendered pages on the fly for SEO

A simple way to serve up appropriate images for every visitor.

An SEO tool that analyzes the structure of a site, crawls the site, count words in the body of the site and warns of any technical SEO issues.