The Top SEO Agencies for Link-Building

This article provides an in-depth review of seven link-building services that have proven to be effective. We will also discuss some services to avoid.

By Mick Essex & Gaukhar Murzagaliyeva
Jul 20, 2023
The Top SEO Agencies for Link-Building

In today's competitive digital landscape, effective link-building is essential for improving search engine rankings.

They are a crucial part of any successful SEO strategy, helping to increase website visibility, drive traffic, and improve search engine rankings.

This article provides an in-depth review of seven link-building services that have proven to be effective.

We will also discuss some services to avoid, ensuring you have all the information you need to make an informed decision about your link-building strategy.

While there are many reputable link-building services available, there are also several that you should avoid.

These services often promise quick results, but they can harm your SEO efforts and potentially lead to penalties from search engines.

Five types of link-building services that you should avoid:

  • Fiverr: a popular online marketplace for freelance services, including link building. While there are legitimate freelancers, many sellers offer hundreds or thousands of low-quality backlinks that can harm your website’s SEO.
  • Private Blog Networks (PBNs): PBNs aim to manipulate rankings and violate Google’s webmaster guidelines, often resulting in penalties.
  • Paid Guest Posts: Paying for links violates Google’s guideline against “exchanging money for links or posts that contain links.”
  • "Push Button" Backlinks: Automated backlink blasts produce spammy links that can damage your SEO. It's always better to focus on high-quality, natural backlinks.
  • Press Releases: Google states that most links in press releases should be nofollowed, making them ineffective for link-building.

Having highlighted the link-building services to avoid, it's equally important to look at high-quality service providers.

These recommended services offer unique strategies and focus on natural, authoritative backlinks. They understand the importance of following search engine guidelines and prioritize editorial integrity.

Let's dive into some of the top recommended link-building services.

  1. Onlyoutreach
  2. FATJOE
  3. LinkBuilder.io
  4. LinkGraph
  5. Pitch Panda
  6. GuestHike
  7. NO BS Marketplace
  8. LinksThatRank
  9. Outreach Monks
  10. OneLittleWeb
  11. Growth Partners Media

1. Onlyoutreach

Onlyoutreach is a link-building agency that delivers high-quality links through creative blogger outreach.

With ten years in the business, they’ve built a reputation for custom outreach, guest posts, and link insertions.

onlyoutreach

Key Features

  • Custom Blogger Outreach focusing on relevant, high-quality sites.
  • Guest Posting Service to build authority and gain strong editorial links.
  • Link Insertions placed contextually into existing articles.
  • Dedicated SEO Strategist to manage goals and execution.

What Makes Them Stand Out

Onlyoutreach emphasizes integrity and avoids link farms. Their process includes strategic planning, tailored pitches, selective prospecting, personalized outreach, and transparent reporting. Customer reviews frequently highlight professionalism, content quality, and impactful SEO results.

2. FATJOE

FATJOE is a popular SEO services company offering link building, blogger outreach, content writing, and more.

fatjoe

Key Features

  • Link Building: outreach, niche edits, HARO links, media placements, content syndication, multilingual outreach.
  • Content Writing Services, including blog posts, website copywriting, articles, press releases, and product descriptions.
  • Design & Video Services, such as infographic design, videos, and visual marketing.
  • SEO Tools, including a keyword rank checker, blog idea generator, and infographic embed generator.

What Makes FATJOE Stand Out

They offer scalable services and a 100% money-back guarantee. With 1,000+ five-star reviews, they’re one of the most trusted large-scale link-building vendors.

3. LinkBuilder.io

LinkBuilder.io is a leading link-building agency trusted by global brands like Udemy, SoFi, and TripAdvisor.

linkbuilder

Key Features

  • Fully Customized SEO Services tailored to each client.
  • High Google Rankings for highly competitive keywords.
  • Strong Testimonials and consistent 5-star reviews.

What Makes LinkBuilder.io Stand Out

Their tailored approach delivers measurable results, including major SERP improvements and significant organic traffic growth. Clients emphasize communication quality, cost efficiency, and predictable outcomes.

4. LinkGraph

LinkGraph is a top-tier SEO agency specializing in high-authority link building.

linkgraph

Key Features

  • High Authority Link Building from trusted, high-traffic sites.
  • Custom Strategies aligned with keyword and authority goals.
  • Data-Driven Approach using proprietary software to analyze competitors.
  • High-Quality Content for every link placement.
  • White-Hat Practices following trusted SEO principles.
  • Transparent Reporting via a 24/7 dashboard.
  • Scalable Services with link delivery in under 30 days.

What Makes LinkGraph Stand Out

LinkGraph delivers high-level strategy, proprietary technology, and large-scale execution. Their emphasis on quality content and transparency further strengthens their reputation.

5. Pitch Panda

Pitch Panda is a collaborative link-building platform specializing in link-building, blogger outreach, and guest posting.

pitch-panda

Key Features

  • Collaborative Link Building Platform
  • Blogger Outreach to connect with influential publishers
  • Guest Posting for contextual backlinks
  • Link Insertions from relevant, quality sites

What Makes Pitch Panda Stand Out

Their collaborative model leads to stronger, more meaningful link-building outcomes. They also have a fast, responsive support team and experienced strategists.

6. GuestHike

GuestHike specializes in guest posting, link building, and content marketing.

guesthike

Key Features

  • High-quality guest posting
  • Custom link-building campaigns
  • Strong content marketing
  • Positive customer testimonials

What Makes GuestHike Stand Out

GuestHike handles content creation, outreach, and placement, making guest blogging seamless. They also offer affordable pricing and a 7-day money-back guarantee. Their article on guest blogging is a useful resource for beginners.

7. NO BS Marketplace

NO BS Marketplace offers link building, blogger outreach, and guest posting through a massive network of 10,000+ sites.

no-bs-marketplace

Key Features

  • Comprehensive Link Building: guest posts, niche edits, curated links, citations
  • Blogger Outreach with end-to-end management
  • Guest Posting with high-quality original content
  • Content Concierge Service ensuring transparency

What Makes NO BS Marketplace Stand Out

They offer full control and visibility, plus access to a very large network of publishers. Their positive employee reviews indicate strong internal quality and support.

8. LinksThatRank

LinksThatRank is known for strict quality controls and specialized link-building processes.

linksthatrank

Key Features

  • 23-Point Quality Control Review for every link
  • Strict Blocklist to avoid PBNs, guest post farms, resellers, hacked links, etc.
  • Free Anchor Text Analysis to optimize strategy

9. Outreach Monks

Outreach Monks is a leading link-building agency known for delivering high-authority, white-hat backlinks through fully manual outreach. With over eight years in the industry and 600+ global clients, they specialize in scalable, content-driven link acquisition designed to improve rankings, traffic, and EEAT signals.

Their team focuses on niche-relevant research, personalized prospecting, and custom outreach strategies that deliver long-term SEO value — never using PBNs, automated systems, or spammy networks.

Key Features of Outreach Monks

  • High-Authority Backlinks: Outreach Monks secures backlinks from real websites with DR 30 to 90+. These placements come from sites with genuine organic traffic, ensuring credibility and long-term authority growth.
  • White-Hat, Manual Outreach: All prospecting and outreach is done by real humans. No automation, no link farms, and no recycled networks. Their Google-compliant approach ensures safe, durable, future-proof backlinks.
  • Custom Strategies: Every campaign is tailored based on niche, target pages, keywords, and anchor text. This helps businesses improve rankings for both lead-generating and traffic-driving keywords.
  • Diversified Link Types: The agency offers guest posts, niche edits (link insertions), blogger outreach, and editorial placements to help build natural, balanced backlink profiles.
  • Proven Results: Clients typically experience a DR increase of 20+ within 3 to 6 months, along with significant improvements in keyword rankings and 2–3x traffic growth.
  • Transparent Process: Clients get domain approval before placement, plus detailed reporting with live URLs, metrics, DR, traffic, and content details.
  • Scalable for Agencies: Outreach Monks delivers more than 2,000 links monthly and provides white-label reporting ideal for SEO agencies and resellers.
  • Affordable Pricing: Their pricing is competitive, offering high-quality link building at reasonable rates without compromising on editorial standards.
  • EEAT & Authority Building: All content is written by real niche writers. This supports topical authority, improves EEAT signals, and aligns with Google’s AI-driven ranking systems.
  • Premium DR 80+ Links: For SaaS and enterprise clients, Outreach Monks offers exclusive DR 80+ editorial placements — a service few agencies can match.

What Makes Outreach Monks Stand Out?

Outreach Monks stands out due to its strict white-hat philosophy, transparent workflow, and strong focus on building real authority rather than artificial link velocity. Their link placements come from vetted websites with genuine readership, not manufactured networks.

Their combination of manual outreach, authentic content creation, niche-relevant prospecting, and scalable processes allows them to deliver SEO results that compound over time. Testimonials highlight their reliable communication, consistent turnaround times, and measurable improvements in ranking.

With flexible packages, agency-friendly white-label systems, and a strong track record of securing links with top-tier publishers like HubSpot, G2, BigCommerce, Freshworks, and Hackernoon, Outreach Monks is a trusted partner for brands aiming to grow sustainably through high-quality link building.

10. OneLittleWeb

OneLittleWeb is a globally recognized SEO and link-building agency trusted by 1200+ leading brands, including SaaS, AI, and e-commerce companies.

They’ve been featured in Forbes, The New York Times, The Guardian, Yahoo News, Search Engine Land, and SEMrush for their data-driven SEO insights and high-impact campaigns.

Key Features of OneLittleWeb

  • High-Authority Link Building: OneLittleWeb specializes in earning white-hat backlinks from genuine editorial websites with high organic traffic and strong topical relevance. Every link is built manually through personalized outreach.
  • Digital PR & Brand Mentions: They secure placements in top-tier publications like Forbes, Entrepreneur, TechCrunch, and Business Insider, helping brands build authority and recognition.
  • SEO-First Web Design: OneLittleWeb offers SEO-optimized web design and development, ensuring every site they build supports long-term organic growth.
  • Custom Strategy & Transparent Reporting: Every campaign is tailored to the client’s niche and backed by detailed reporting that highlights link placements, metrics, and performance.
  • Expert Team: With over 50 SEO professionals, content strategists, and outreach specialists, OneLittleWeb delivers consistent, measurable results across industries.

What Makes OneLittleWeb Stand Out?

OneLittleWeb stands out for its strict focus on quality over quantity and its commitment to 100% white-hat practices. Their campaigns combine digital PR, contextual backlinks, and authority placements to drive sustainable growth.

OneLittleWeb’s proprietary outreach system identifies top-tier link opportunities based on traffic, authority, and relevance, ensuring that each link contributes real SEO value.

With a 96% client retention rate and proven case studies showing traffic growth of 3×–10× within months, OneLittleWeb has become one of the most trusted names in link building and organic growth.

11. Growth Partners Media

Growth Partners Media is a B2B-focused link-building agency known for strategic backlinks, brand mentions, and high-authority editorial placements. 

They specialize in working with SaaS, cybersecurity, IT, and other complex B2B industries where trust, authority, and long sales cycles make SEO a critical acquisition channel.

Key Features

  • Guest Posts built through personalized outreach and placed on authoritative, niche-relevant websites.
  • Niche Edits on existing high-authority pages through curated outreach.
  • Herd Links, a unique service that earns contextual mentions from real community platforms, forums, and discussion hubs.
  • Custom SEO Strategy aligned with entity building, AI search visibility, and long-term organic growth.

What Makes Growth Partners Media Stand Out

Growth Partners Media stands out with a strict quality-first approach. They’re known for delivering measurable SEO gains for B2B brands that need stronger authority, trust signals, and visibility across Google and emerging AI search systems.

With a focus on English-language SEO, vetted placements, and consistent delivery, they’re a strong fit for companies seeking long-term, defensible link-building rather than high-volume solutions.

FAQ

1. What is link building in SEO?

Link building is the process of acquiring hyperlinks from other websites to your own. These links help search engines understand your site’s authority, relevance, and trustworthiness. High-quality backlinks often lead to improved rankings and increased organic traffic.

2. Are paid backlinks safe to use?

Paid backlinks can be risky and may violate Google’s policies. If detected, they can lead to ranking penalties or even deindexing. It’s safer to invest in white-hat link-building services that focus on editorial, natural backlinks earned through genuine content and outreach.

3. How long does it take to see results from link building?

Most websites begin seeing measurable improvements within 2–4 months, depending on competition, link quality, and existing domain authority. Link building is a long-term investment, and results tend to compound over time as your backlink profile grows.

4. What makes a backlink “high quality”?

A high-quality backlink comes from an authoritative, relevant, and trustworthy website. Contextual placement within useful content, strong editorial standards, and natural anchor text all contribute to link quality. Links from spammy or irrelevant sites may harm your SEO.

5. Should small businesses invest in link building?

Yes — small businesses benefit significantly from link building because it boosts visibility, improves rankings, and drives targeted organic traffic. Investing in safe, white-hat link-building services can level the playing field against larger competitors.

Conclusion

Link building remains one of the most powerful strategies for improving search engine rankings and establishing long-term online authority. While many services promise quick wins, only a few deliver sustainable, white-hat results that genuinely enhance your SEO performance.

By understanding which services to avoid and focusing on reputable providers, you can build a strong backlink profile that supports your business goals. Whether you’re a small business, a growing brand, or an established enterprise, choosing the right link-building partner is essential for long-term success.

Use this guide to make informed decisions, avoid risky tactics, and select services that prioritize transparency, editorial integrity, and high-quality backlinks. With a strategic approach, link building can dramatically improve your visibility and help your website stand out in today’s competitive digital landscape.