Moz: Known for its comprehensive SEO tools and resources, Moz also offers consulting services that include technical SEO audits and recommendations.

Distilled: Distilled is a digital marketing agency with a strong focus on technical SEO. They offer services such as website audits, SEO strategy development, and training.

Search Laboratory: This agency specializes in global SEO, including technical SEO services like website audits, site migrations, and performance optimization.

Builtvisible: Builtvisible is known for its technical SEO expertise, offering services such as website audits, structured data implementation, and site speed optimization.

SEO Hacker: SEO Hacker is a digital marketing agency based in the Philippines known for its technical SEO prowess. They offer a range of services including technical audits, site architecture optimization, and server log analysis.

Screaming Frog: While primarily known for its SEO spider tool, Screaming Frog also offers technical SEO consulting services including website audits and recommendations for improving site performance.

Onely: Onely is a technical SEO agency that specializes in website architecture, JavaScript SEO, and structured data implementation.

DeepCrawl: DeepCrawl provides technical SEO services through its platform, offering website crawls, data analysis, and insights to improve site performance.

SEO.co.uk: This agency based in the UK offers technical SEO services including website audits, penalty recovery, and site migration assistance.

Greenlane Marketing: Greenlane Marketing offers technical SEO services such as website audits, site speed optimization, and structured data implementation.