OptiLink analyzes a single page, whereas OptiSpider analyzes all the pages of a given domain.

OptiLink depends primarily on the search engines to discover linking pages, both internal and external, while OptiSite discovers all internal links automatically.

OptiLink is for doing ranking analysis, while OptiSpider is used to analyze the internal linking structure of a domain.

OptiLink displays very detailed about a single page, while OptiSpider provides a summary view of all pages on a domain.

To discover the pages of a domain, OptiSpider incorporates a web spider similar to the spider programs the search engines use. When using advanced linking strategies, such as Dynamic Linking, it is important to run OptiSpider on your domain to be sure that all pages of the site are findable by the search engines.