Link building is the part of SaaS SEO that founders often get wrong, usually in one of two directions. Either it gets ignored entirely, or it gets outsourced to whoever is cheapest, which buys placements on sites nobody reads and creates a backlink profile that becomes a liability to your rankings and site health.
Neither outcome moves the pipeline, and both waste precious money that you can’t get back.
What makes SaaS different is the economics. You're not optimising for traffic; you're optimising for trial signups and demos, which means links need to sit on pages that rank for commercial-intent keywords your buyers actually search.
To track which keywords you rank for, see our guide to the best SEO tools for 2026.
It also means getting mentioned on the sources that AI assistants cite when someone asks LLMs like ChatGPT or Perplexity for software recommendations.
The five agencies below all do credible work in this space, at very different price points and with genuinely different methodologies.
Here's what each one is actually good at.
1. GoPeak
Founded in: 2023
Overview: Built specifically for SaaS and B2B software companies, GoPeak is a specialist SaaS link building agency rather than a full-service SEO shop, and that focus shows in how transparently it operates. The team runs two parallel tracks: contextual placements aimed at Google rankings via link insertions and guest posts, along with brand mentions in listicles, comparisons, and review roundups aimed at getting cited by AI assistants like ChatGPT, Gemini, and Perplexity.
They provide unique niche-relevant sites, in-content dofollow links only, never sidebars or footers, with a 12-month free replacement if a link is removed. Pricing is public, which is rare in this category, and every client gets a live shared link tracker plus monthly audit reporting instead of a vague end-of-month summary.
Types of services: Contextual link building, link insertions and niche edits, guest posting, AI-search brand mentions, backlink profile audits, anchor text strategy, white-label link building for agencies, ongoing SEO recommendations.
Clients: My Hours, Referral Rock, Sender, Archie, systeme.io, Picsart
Website: gopeak.io
2. uSERP
Founded in: 2019
Overview: Co-founded by Forbes 30 Under 30 honoree Jeremy Moser, uSERP is the premium end of this market and makes no secret of it; the agency publicly states that quality link building runs $5,000 to $25,000 a month and that anything under roughly $900 a placement is likely to harm. Its team of around 37 specialists works entirely in-house with no outsourcing, and several senior strategists came from in-house roles at companies like Robinhood.
The methodology is unusually specific: uSERP reverse-engineers which domains AI engines actually cite using its own tooling, then targets placements on those exact sources, after running link-to-rank ratio and anchor gap analysis. It has published more than forty named case studies, which is the most transparent track record in the category.
Types of services: Authority link building, digital PR, editorial outreach, guest content, unlinked brand mention reclamation, contextual link insertions, AI and LLM visibility work, backlink audits, SEO strategy consulting, white-label link building.
Clients: monday.com, Nav, Copy.ai, and Reply.io
Website: userp.io
3. Siege Media
Founded in: 2012
Overview: Siege Media is the largest agency on this list, with a team of 120-plus across Austin, Chicago, New York, and San Francisco, and it approaches links from a completely different angle: they're a by-product of content and digital PR rather than a product you buy by the unit. The agency runs its own data journalism function, producing original research and interactive assets designed to earn coverage naturally, which is why its placements tend to land on publications that outreach alone can't reach.
Founder Ross Hudgens wrote a book on generative engine optimization for Wiley, and the agency has restructured internal roles around SEO and GEO together, a strong credential as AI search becomes a real acquisition channel. Pricing isn't published, and this is firmly an enterprise-budget option.
Types of services: Content marketing strategy and production, SEO consulting, GEO and AI search services, digital PR and link building, data journalism, design and illustration, affiliate partnerships, analytics, technical consulting.
Clients: Zendesk, Asana, HubSpot
Website: siegemedia.com
4. Page One Power
Founded in: 2010
Overview: Page One Power is the oldest and most link-building-pure agency here, operating out of Boise, Idaho for fifteen years and doing nothing else. The founders were trained directly by Eric Ward, the man who essentially invented the discipline, and the agency has survived every algorithm update since Penguin, which is not something most of its contemporaries can claim.
Its signature framework argues that backlink profiles need six distinct types of links, and that most sites are missing three or four of them, so the sale is a diagnostic link-mix audit rather than a monthly quota. Everything is manual, US-based, and never automated or outsourced, with a dedicated senior project manager on every account. The stance on paid links is absolute: they don't do them, including inside guest posting.
Types of services: Guest post link building, broken link building, resource link building, unlinked mention reclamation, digital PR, community mentions on Reddit and forums, contextual link insertions, backlink audits with disavow files, technical SEO audits, linkable asset creation, white-label link building.
Clients: QuickBooks, Healthline, Hyatt
Website: pageonepower.com
5. Skale
Founded in: 2019
Overview: London-based Skale positions itself as an AI-search-first organic growth agency for SaaS and tech brands, which means link building is one of three service lines rather than the whole offer. The pitch to founders is unusually commercial: KPIs are SQLs, pipeline, MRR, and CAC payback rather than traffic or domain rating, and the agency's headline claim is 3.5x revenue from SEO inside twelve months with profitable payback in the same window.
Its link building is content-collaboration-led, targeting topically relevant premium domains through partnerships rather than placement buying. Several strategists worked in-house at SaaS companies before moving agency-side, and the practical offer is an embedded growth team of six-plus people assembled in weeks. Pricing isn't public, with a stated $5,000 minimum engagement.
Types of services: SEO strategy and execution, technical SEO, SEO content production, link building and outreach, digital PR, AI search and GEO consultancy, AI brand mentions, revenue-focused SEO reporting.
Clients: HubSpot, TravelPerk, Synthesia
Website: skale.so
FAQ
How much does SaaS link building cost?
It depends on the agency. uSERP puts quality link building at $5,000 to $25,000 a month. Skale has a $5,000 minimum. GoPeak publishes its prices, while Siege Media does not.
Which agency is the best start for a smaller SaaS budget?
GoPeak is the most open place to start. It publishes its prices and builds links only for SaaS and B2B software companies.
Do these agencies help with AI search?
Yes, four of the five do. GoPeak and uSERP aim placements at the sites AI assistants cite. Siege Media and Skale both sell GEO and AI search services.
Which agency refuses to buy links?
Page One Power has the strictest rule. It does no paid links at all, guest posts included. Skale also earns links through partnerships instead of buying placements.
What should I ask a link building agency before I sign?
Ask to see its live link report. The agencies worth hiring will offer it without being asked.
How to choose
Budget is the fastest filter. If you have $10,000-plus a month and want the deepest AI-citation methodology, uSERP is the specialist. If you want links as a by-product of content that earns real coverage and you can fund an enterprise content programme, Siege Media.
If you want a diagnostic look at what your backlink profile is actually missing from people who've done nothing else for fifteen years, Page One Power.
If you want a full organic growth team tied to revenue targets, Skale.
And if you want SaaS-specific link building with published pricing, explicit quality criteria, and placements built for both Google and AI search, GoPeak is the most transparent starting point.
Whichever you pick, ask for the live link report before you sign; the agencies worth hiring will offer it unprompted.
Want to check your own backlinks first? Our lists of Ahrefs alternatives and Semrush alternatives cover cheaper backlink tools.