Screaming Frog is an SEO spider tool, used in order to link images and scripts just like a search engine to evaluate the SEO on a website.

A free version of the software is available which can carry out the following tasks:

• Find broken links and redirects
• Page data and Metadata analysis
• Duplicate page discovery
• With a URL crawl limit to 500

The paid version charges 149 pounds per year and is able to provide additional help like

• Crawl configuration
• Search console integration
• Free technical support
• Unlimited URL crawl limit

Companies like Apple, Google and Amazon are known to use this software.

Dr. Link Check is precisely what the name suggest – The doctor of all your links. Dr. Link Check comes with an extremely simple UI over the web that allows you to enter your website URL to check for the links that exist on your site currently.

It categorises the links into the following:

• Broken Links
• Blacklisted Links
• Internal Links
• External Links

The broken links can easily be filtered out and used to identify the links that might be broken. The blacklisted links category helps to identify the links which might be blacklisted by search engines.

Deadlink checker is a free yet exhaustive web based service that allows you to check for the status of links on your website. With Deadlink checker, it is possible to check for the below:

• Broken links on a single page
• Broken links on an entire website
• Broken links on multiple websites

For the single page or single website check, it allows you to freely analyse without any registration. However, in order to use the multiple website check feature, it requires you to register.

Registration also gives you access to free reports for the analysis. Dead Link Checker also provides certain good resources for guiding you in your SEO process.

Broken Link Checker serves you with the ability to scan unlimited number of websites containing dead links. Broken Link checker not only provides the list of dead links, but also helps in locating the links to effectively remove them.

Some of its outstanding features include:

• Reporting of error codes for each dead link
• OS independent tool
• A 3000 page limit for the free version
• Instant website analysis for unique broken links
• Detailed report of broken links along with its location

SEOptimer is a tool which can check your website in order to find any problems which might be flagged by a search engine as a penalty charge.

The software comes with a 14-day trial version which can be used to carry out checks on

• Title and meta headers
• Keyword consistency
• Backlinks
• Mobile and tablet rendering

The software is customisable to look as the user desires and is capable of producing a professional yet simple worded PDF report in nine different languages.

Two paid versions are available at $29 per month and $59 per month. Both come with extra features.