Listly by Kate Toon
Some awesome FREE SEO tools that I use regularly
Fast and optimised pages lead to higher visitor engagement, retention, and conversions. Check your site speed
Google Analytics lets you measure your advertising ROI as well as track your Flash, video, and social networking sites and applications.
Use Google Webmaster tools to fix crawling and indexing issues, site speed data and more.
Sign in or signup for Bing Webmaster Tools and improve your site's performance in search. Get access to free reports, tools and resources.
Free link analysis and keyword research tools brought to you by SEO expert Aaron Wall. (Some paid)
Copyscape is a free plagiarism checker. The software lets you detect duplicate content and check if your articles are original.
A great tool for competitor rankings and data on paid search.
SEO Browser is a fast, efficient, and comprehensive SEO analysis tool that can help you examine and understand the component parts of a Web page.
(XML, ROR, Text, HTML) This website is to let you: Create an XML sitemap that can be submitted to Google, Bing, Yahoo and other search engines to help them crawl your website better. Create a Text sitemap to have a plain list of all your pages.
Use this tool to check how Google views your structured data markup. It’s particularly useful if you have a G+ profile and you want to verify authorship for your blog posts.
Screaming Frog's SEO Spider is a desktop program that sends a "spider" (or crawler) to a site and compiles a spreadsheet-like report on the pages it crawls. You'll see title tags, URLs, meta descriptions, meta keywords and H1 tags, as well as pages that might have 404 errors
If you care about validation, this robots.txt validator is a tester that will check your robots.txt file searching for syntax errors
This tool replicates the appearance of a snippet in Google SERPs, which allows SEOs to optimize a page title and description for maximum click-through rate.
Open Site Explorer is Moz's Search Engine for Links. Perform competitive link research, explore backlinks, anchor text, and more for free.
Majestic SEO - Link intelligence tools for SEO and Internet PR and Marketing. Site Explorer shows inbound link and site summary data.
Search beyond words. NerdyData is a new type of search engine that lets you do complex research on the web, using source code.
Test your website for cross-browser, cross-mobile compatibility. (Free trial)