Semrush
- Keyword research
- Content optimization
- Technical audits
Every tool on this page states a free plan, a free tier or free tools on its own website, with no trial clock attached. The list runs across all eight categories of the directory, from keyword research and content editors to site crawlers, rank trackers, local SEO tools and AI search visibility trackers, and the cards are ordered by the number of published guides that name each tool.
A free plan can still have limits. Before you build a workflow on one, open the vendor's own pricing page and check what the free tier leaves out: how many projects, keywords, pages or credits it covers, and whether exports, an API or team seats need a paid plan. Tools that let you try their paid plan for a limited time are on the free trial page instead, and a tool can sit on both.