nibbler.silktide.com

Free tool for testing how good your website is, and what you can do to improve it. Check accessibility, SEO, social media, compliance and more.

This tester is very modern but Nibbler will only test up to 5 pages of a website. They do offer a pa ...

www.websitetest.com

Test your website's performance across multiple browsers, locations, and servers, and gather data points plus screenshots of the user experience.

www.dnsqueries.com

DNSQueries provides network tools and lets you make every needed network test, such as domain health tests, RBL checks, dns lookup, ptr queries, host geographical informations, dns query and many more.

ubersuggest.org

Get keyword ideas with Übersuggest the free keyword suggestion tool that makes good use of different suggest services. This website utilises the autocomplete feature of search engines to give you ideas for keywords. I think it primarily uses google.

www.barracuda-digital.co.uk/panguin-tool/

See your Google organic visit data overlaid with Google's major algorithm updates, and then dig into your data.

followerwonk.com

Twitter analytics, follower segmentation, social graph tracking, & more

topsy.com

Topsy Social Media Analytics allow you to search by time and place, set alerts, and analyze sentiment for every tweet ever made. Search our entire database free.

developers.google.com/speed/pagespeed/insights/

Page Speed Insights measures the performance of a page for mobile devices and desktop devices. It fetches the url twice, once with a mobile user-agent, and once with a desktop-user agent.

The PageSpeed Score ranges from 0 to 100 points. A highe ...

dnstree.com

This gives you hardcore information on any of the internet root servers of top level domains (TLD) ie .uk .gov .com

dnsw.info

Quick whois lookup utility combined with reputation lookup from WOT and dns-blacklists The whois data is fetched and cached. We also make an effort to make the info easy to read.

rbls.org

rbls.org, your one-stop source of checking ip-numbers and domain names in multiple blocklists

www.metalength.com

Check if your title tag and meta description tags are the best length for Google and SEO. Also find SEO tips on meta tag optimization.

This tool also has detailed descriptions and pointers on the meta tags. This is why it is also classed as an ...

www.freeseoanalysis.org

Our free SEO report tool is a simple and effective way to analyze your website?s compliance with the 78 rules which are the widely-accepted onsite elements of Google?s algorithm to rank websites. This simple analysis tool creates a free seo report list ...

addgadgets.com/ipaddress/

Displays your current Internet Protocol (IP) address and location with Google Maps - Latitude, Longitude, Host Name, Country Name, City and other.

www.iplocation.net

Find a geolocation of an IP address including latitude, longitude, city, region and country. Compare the data from multiple providers.

www.infosniper.net

InfoSNIPER offers free as well as commercial web API geolocation services. The unique thing about this site is you can select the map service you want from Google, Bing or Yahoo.

Free Google Locate IP Address and Domain Lookup Service with Whoi ...

www.siteliner.com

Check websites for internal duplicate content and more with Siteliner.

Free and fast analysis of your entire website - duplicate content, broken links, internal page rank, redirections and more. Also creates an XML sitemap.

Siteliner is ...

www.gidnetwork.com/tools/gzip-test.php

Introducing GIDZipTest™, a simple web page compression / gzip test tool. This version of the tool is able to identify web pages with deflate encoded content as well. Online tool to test your (deflate / gzip) comp ...

www.seoworkers.com/tools/

SEO Workers want your site to succeed. That is why we offer you these tools listed below. These will help you not only optimize your website for the search engines but also for the end searcher.

Make the end searcher visit your ...

www.internetmarketingninjas.com/seo-tools/free-optimization/

See your site how the spider sees it. This one stop glimpse of your site's most basic information can give you insight into minor adjustments which can have a major impact. Use this tool to evaluate your internal links, meta information and page conten ...