WordStream's Free SEO Tools

WordStream offers a suite of free, standalone SEO tools useful for startups on a zero budget. These include a Keyword Suggestion Tool, Website Grader (for a quick health check), Free Backlink Checker, and Local SEO Checklist. While not as deep as paid platforms, they provide a solid starting point for basic audits and research. Targeted at small business owners and marketing beginners, these tools are completely free and require no account for most uses.

They score for their accessibility, ease of use, and providing genuine value without any cost, making them perfect for the earliest startup stages.