In a digital landscape overflowing with noise, one truth remains: high-quality backlinks are still a cornerstone of online visibility. But with countless SEO firms promising miracles, which ones actually deliver?
We’ve rounded up eight of the most trusted and results-driven link building companies in the US—agencies that aren’t just generating links, but helping brands build authority, relevance, and long-term growth.
1. Click Intelligence
Click Intelligence has quietly become one of the most sought-after names in SEO—and for good reason. Their powerful online portal puts clients in control, letting them view live campaigns, place orders, and track link progress at any time. But this isn’t just about convenience; it’s about results. With a vast network of US-based publishers and a smart, ethical approach to link building, they consistently help clients outrank competitors in even the most competitive spaces.
From ecommerce and healthcare to SaaS and finance, Click Intelligence understands the nuances of high-impact SEO. Whether you’re a solo marketer or an agency white-labelling the service, their blend of scalability and strategy is hard to beat.
2. Metric Theory
Well known for their work in paid media and performance marketing, Metric Theory brings the same analytical rigour to SEO—and it shows in their link building results. What sets them apart is how tightly they tie backlinks to overall KPIs. Their approach is less about “more links” and more about the right links, strategically selected to support conversion, traffic, and revenue.
They work exceptionally well with high-growth DTC and B2B brands looking to unify organic and paid strategies under one cohesive roadmap. For companies that want link building to play a bigger role in bottom-line results, Metric Theory is a compelling option.
3. Primary Position
Primary Position is a seasoned SEO and inbound marketing agency based in New York, with over 20 years of experience helping businesses improve their search visibility and conversion rates. Their core strengths lie in technical SEO, content optimization, and integrating organic and paid strategies to maximize ROI.
They’re a strong fit for mid-sized to enterprise-level businesses—particularly in SaaS, finance, and professional services—looking for hands-on, strategic support. With a consultancy-style approach and a focus on measurable performance, Primary Position is ideal for brands that value experience, insight, and sustainable digital growth.
4. Cosmitto
For brands that value voice, message, and thoughtful placement, Cosmitto delivers. Their outreach isn’t churned through templates—it’s carefully planned, personalised, and aligned with each client’s niche and goals. Content is at the heart of their link building, and it shows in the quality of their placements.
Whether working with educational institutions, nonprofits, or service-based businesses, Cosmitto builds real relationships with bloggers and publishers. The result? Natural, high-authority links that actually reflect your brand—not generic mentions on low-quality sites.
5. 1SEO Digital Agency
1SEO is more than just a link building agency—they’re a full-stack digital partner offering everything from web design to PPC to technical SEO. But their link building services stand on their own, with a clear process that emphasises quality, industry relevance, and long-term value.
Especially strong in fields like healthcare, legal, and home improvement, 1SEO takes time to understand your business before launching any campaign. Their team ensures that every link supports both traffic growth and brand credibility, making them ideal for companies that need SEO without the guesswork.
6. Dot Com Media
With a blend of technical know-how and marketing experience, Dot Com Media offers link building that’s designed to support structured, sustainable growth. They’re especially effective for businesses trying to rank well in both local maps and national search results—a rare but valuable combination.
Their team works across multiple verticals including retail, automotive, and healthcare. They also understand the value of trust—building backlinks from sources that pass Google’s ever-tightening quality filters. It’s a methodical, proven approach that appeals to brands looking to grow without cutting corners.
7. Second Nature
Second Nature offers a high-touch, strategic approach to link building that’s ideal for companies in niche or regulated industries. They don’t rely on mass outreach or bulk directories. Instead, they focus on building authoritative links through editorial placements, thought leadership content, and media collaboration.
Their work is particularly effective for professional services, tech, and B2B brands who want to build a reputation—not just links. It’s SEO with substance, crafted with intention.
8. The HOTH (thehoth.com)
The HOTH remains a popular choice for agencies and digital marketers who need links fast. With an easy-to-use dashboard and a wide range of services—from guest posts to niche edits—they’re a one-stop shop for scalable SEO services.
While they’re not as personalised as boutique agencies, they’re fast, affordable, and efficient. For businesses or agencies managing multiple campaigns and needing a consistent link stream, The HOTH offers the infrastructure and support to deliver.
The Takeaway: Pick the Partner That Matches Your Mission
The best link building agencies don’t just drop URLs on random websites. They build meaningful connections, drive real authority, and integrate with your long-term SEO goals. Whether you’re scaling across the country or just trying to outshine your local competitors, the right agency can change the game.
