The five best-known B2B SEO agencies, at a glance.
RevenueZen was named in 11 of 19 ranking lists, Omniscient Digital and Directive in 10, Siege Media in 8 and Skale in 7. Each has a page for B2B or SaaS SEO and publishes case studies on its own site.
They do different jobs well. Pick the kind of B2B SEO agency that matches how your buyers decide, then compare proof.
NAMED IN 11 OF 19 LISTS
RevenueZen
Focus: B2B SEO, interview-led content, LinkedIn
Base: Portland, Oregon
Best for: firms whose expertise sits with a few people
Proof shown: pipeline and revenue case studies
NAMED IN 10 OF 19 LISTS
Omniscient Digital
Focus: content-led organic growth, SEO and AI answers
Base: offices in Austin and four more US cities
Best for: B2B software led by content
Proof shown: named case studies with pipeline figures
NAMED IN 10 OF 19 LISTS
Directive
Focus: SEO inside a B2B programme with paid media
Base: six offices; working since 2013
Best for: long sales cycles, buying committees
Proof shown: case studies, a named framework
NAMED IN 8 OF 19 LISTS
Siege Media
Focus: content, digital PR and AI search at volume
Base: offices in Austin, NYC, Chicago, San Francisco
Best for: software and fintech content libraries
Proof shown: traffic, links and AI visibility
NAMED IN 7 OF 19 LISTS
Skale
Focus: AI search and SEO run as one system
Base: not stated on its site
Best for: SaaS and tech brands chasing signups
Proof shown: signup and revenue case studies
Source: each agency’s own website, read 13 November 2026. List counts: our tally of 19 ranking lists (chapter 2).
Selling software? Our buyer’s guide to choosing a SaaS SEO agency goes deeper on product-led search. Still scoping the work? See what B2B SEO services should cover before you compare who does it.
Why trust this list.
We counted names instead of choosing by taste. Nine lists came from Google’s US top 10 for “best b2b seo agencies” and “b2b seo agency” (DataForSEO, pulled 13 November 2026); ten more came from US web searches for the same terms.
HOW WE BUILT THIS LIST
19
ranking lists read in full
14
written by an agency that lists itself
0
self-placements counted
1 day
every fact checked on 13 Nov 2026
Rules: count each agency once per list; drop the author’s own entry; keep agencies with a B2B or SaaS SEO page and public case studies; publish only what each agency states about itself.
Source: 19 ranking lists (9 from the DataForSEO Google US desktop top 10, pulled 13 November 2026; 10 from US web search), read 13 November 2026. Each author’s own entry excluded.
The five also lead in the nine Google top-10 lists alone: Directive, RevenueZen and Skale in 4 each, Omniscient Digital and Siege Media in 3. Straight North was named in 9 lists, but its site did not open to our reader on 13 November 2026, so we could not check any fact on it and have not profiled it. You may want to look at it yourself.
| What a buyer needs | Lists that do it (of 9) | This guide |
|---|---|---|
| Written by someone not in the list | 4 | Yes: we are not in the five |
| States how agencies were chosen | 5 | Yes, with counts |
| Updated in 2026 | 6 | Yes, 13 Nov 2026 |
| Counts how often each agency appears elsewhere | 0 | Yes, across 19 lists |
Source: the nine lists, each read on 13 November 2026. They run from roughly 1,600 to 6,000 words and profile 7 to 18 agencies.
RevenueZen.
B2B SEO AND CONTENT · PORTLAND, OREGON · LAUNCHED 2017 · 11 OF 19 LISTS
Known for: pairing B2B SEO with “Interview Led AI Content”: expert interviews turned into pages through AI-assisted workflows. It also offers generative engine optimisation, LinkedIn content and executive ghostwriting, and SEO audits.
Best for: B2B firms whose expertise sits with a few people, in the sectors it lists: startups, health tech, professional services, renewable energy, financial services and SaaS.
Proof on its site: 13 case studies, most stated as pipeline, revenue or leads. The agency reports one client generating “$2.2M in Pipeline From SEO in 6 Months”.
Ask them: “How many hours of our experts’ time will you need each month, and what does each interview become?”
Source: the agency’s own website (home, about and case-study pages), read 13 November 2026. Figures are the agency’s own.
Omniscient Digital.
CONTENT-LED ORGANIC GROWTH · OFFICES IN AUSTIN, NEW YORK, SAN FRANCISCO, CHICAGO, BOSTON · 10 OF 19 LISTS
Known for: a “market-led approach” that is “rooted in buyer demand”: before choosing keywords, it interviews sales and customer-success teams and reviews recorded sales calls. Services run from SEO strategy and technical SEO to answer engine optimisation, content, digital PR and conversion work.
Best for: B2B software businesses that want content to be the main growth channel, and can open up customers and sales calls to an agency.
Proof on its site: named case studies with figures. The agency reports that one client “generated $400,000 of qualified pipeline through SEO”.
Ask them: “Which customer research would you run in month one, and how would it change your topic list?”
Source: the agency’s own website (home page and case studies), read 13 November 2026. Figures are the agency’s own.
Directive.
B2B MARKETING AGENCY · OFFICES IN ORANGE COUNTY, AUSTIN, NYC, MEXICO CITY, LONDON, TORONTO · SINCE 2013 · 10 OF 19 LISTS
Known for: a B2B SEO page headed “Turn Organic Search Into Profitable Pipeline”, with analytics and ROI reporting connected to CRM data. Its method starts by weighing search demand against acquisition economics, and it runs paid media and revenue operations too.
Best for: technology, industrial and services firms with long sales cycles, large sites and a wish to run SEO and paid channels through one partner.
Proof on its site: case studies and a named framework, DiscoverabilityOS. On its SEO page, the agency reports “237%” keyword growth for one client.
Ask them: “How will you decide which search terms are worth our budget, given what a customer is worth to us?”
Source: the agency’s own website (home page and B2B SEO page), read 13 November 2026. Figures are the agency’s own.
Siege Media.
CONTENT, SEO AND DIGITAL PR · OFFICES IN AUSTIN, NYC, CHICAGO, SAN FRANCISCO · 8 OF 19 LISTS
Known for: design-led content at volume and digital PR that earns links, now framed as “Full-service GEO. We make brands the answer in search.” It has named tools for content planning and refreshes, and its chief executive wrote a book on generative engine optimisation.
Best for: software, fintech and cybersecurity brands, among the industries it lists, growing through a large content library.
Proof on its site: named case studies with traffic value, links and AI visibility. The agency reports “126” pieces ranking in the Top 10 for one software client.
Ask them: “Alongside traffic value, which measures will you report so we can see enquiries and pipeline?”
Source: the agency’s own website (home page and case studies), read 13 November 2026. Figures are the agency’s own.
Skale.
AI SEARCH AND SEO FOR SAAS AND TECH · HEADQUARTERS NOT STATED · 7 OF 19 LISTS
Known for: calling itself an “AI search–first organic growth agency” that runs “GEO and SEO as one system”. Services include SaaS SEO, AI brand mentions, link building, content and site migrations.
Best for: growing SaaS and tech companies that judge organic work on signups, demos and revenue. It describes a hybrid attribution model that adds self-reported answers to software tracking.
Proof on its site: case studies stated as signups and revenue, and a 5-star Clutch rating across 21 reviews, as it reports. The agency reports “+120% organic signups” for one client.
Ask them: “How does your self-reported attribution sit beside our CRM data in the monthly report?”
Source: the agency’s own website (home page and case studies), read 13 November 2026. Figures are the agency’s own.
Side by side, and which kind of B2B SEO agency fits you.
Each agency is strong at a different version of B2B SEO. Match the version to how your buyers decide.
| Agency | Main focus | Lists | Likely best fit | Proof it shows |
|---|---|---|---|---|
| RevenueZen | B2B SEO, interview-led content, LinkedIn | 11 of 19 | Expert-led B2B firms | Pipeline, revenue and lead case studies |
| Omniscient Digital | Content-led growth, SEO, AI answers | 10 of 19 | B2B software with customer access | Named case studies with pipeline |
| Directive | SEO within paid media and RevOps | 10 of 19 | Long cycles, buying committees | Case studies, a framework |
| Siege Media | Content, digital PR, AI search | 8 of 19 | Software and fintech content libraries | Traffic value, links, AI visibility |
| Skale | AI search and SEO as one system | 7 of 19 | SaaS and tech chasing signups | Signup and revenue case studies |
- CONTENT IS YOUR ENGINEContent-led growth: chapters 4 and 6
- YOUR EXPERTS ARE THE PRODUCTInterview-led content: chapter 3
- A COMMITTEE BUYS, SLOWLYPipeline-led, with paid media: chapter 5
- YOU SELL SOFTWARE ON SIGNUPSAI search and SEO as one system: chapter 7
- YOU CANNOT SEE WHAT CREATES REVENUEMeasurement first: chapter 10
Ask for a case study from a company with a sales cycle and deal size close to yours. A buying-process match matters more than a sector match.
For research-heavy buyers, our guide to SEO for complex B2B products explains which pages they need. If your priority is AI answers rather than B2B search in general, compare the best AI SEO agencies in the US or the GEO and AEO specialists; UK buyers can see the UK AI SEO agency comparison.
What a B2B SEO agency must now cover.
B2B buyers now build shortlists inside AI chatbots as well as on Google. So a B2B SEO agency should show how it will get you named in AI answers, not only ranked.
Source: G2, “The Answer Economy” research, published 15 April 2026; survey of 1,076 B2B software buyers, March 2026. G2 also found AI chatbots are now the top source influencing shortlists.
Clicks are thinner too. Pew Research Center found that in March 2025 people clicked a link inside Google’s AI summary on 1% of visits to pages showing one, and a normal result on 8%, against 15% with no summary.
Named, per AI engine, run repeatedly. One run tells you little.
Reported apart from rankings, against a dated baseline.
AI referrals traced to enquiries, including branded searches.
Directories, reviews and third-party lists, which AI engines read.
Our 20 questions to ask an SEO or AI search agency covers these, with what good answers sound like. See also how we approach being named in AI answers.
How Prolinkage works differently.
We wrote this guide, so we have kept ourselves out of the five. Here is how we work, so you can compare us on the same terms.
STEP 01
Audit, at no charge
Your site in Google and AI answers, reviewed by a person
STEP 02
Plan
Buyer questions, page priorities and a dated baseline
STEP 03
Build and run
SEO, AI visibility, ads and site changes, one team
STEP 04
Measure to revenue
Enquiries and closed deals traced in your CRM
We start with an audit, at no charge
Before you pay us anything, we show you which buyer questions you appear for, who appears instead and where visitors leave before enquiring. We want you to trust our work before you pay for it, so request an audit of your site, at no charge, and decide afterwards.
One team across the funnel
B2B SEO usually fails between the ranking and the deal, so one team covers technical SEO, content and authority, AI search visibility, Google Ads, LinkedIn Ads, tracking, conversion work and website design and development. Our GA4, Tag Manager and CRM measurement checks each event from browser to CRM record. In Google Ads management we build campaigns around the leads you want and report a form fill apart from a qualified opportunity.
Google PartnerView our Partner profile ↗
From a US client, 3 July 2024
We work with many companies in both
The clients we take
We work with B2B companies, and with many companies in the US and UK. We take on work where we can see a route from search to enquiry to revenue, and say early if we cannot.
The proof wall: five clients, names withheld.
Every figure below comes from the client’s own analytics, CRM, rankings tool or a verified review. Each screenshot has names blurred, and none of it is a forecast for your business.
+213.5%
Client 1, a US B2B company (name withheld). Closed-won revenue credited in HubSpot to Organic Search and AI Referrals (original traffic source) rose from $37,350 (Apr–Jun 2026) to $117,100 (Jul–Sep 2026). AI Referrals alone went from $0 to $9,400.
+120% · 5.0
Client 2, a US project-controls consultancy. In a Clutch-verified review (3 July 2024) the client reported website traffic up 120% and top rankings for business keywords, scoring 5.0 on quality, schedule, cost and willingness to refer. Client-reported; pay-per-click, SEO and social media, Jan 2022–Mar 2024.
330 → 5,868
Client 3, a Singapore parcel-shipping platform. Organic-search users a month rose from 330 in July 2020 to 5,868 in November 2021, up 1,678% (Universal Analytics).
+98.87%
Client 4, a fitness brand with English- and Greek-language sites. New organic-search users on the English site rose from 265 to 527, 28 Oct–26 Nov 2024 against the previous 30 days (GA4).
2.9K
Client 5, a US analytics software company. 2.9K ranking keywords in Semrush’s US desktop database, January 2022 snapshot.
$37,350 → $117,100
A quarter of closed-won revenue from search and AI referrals, for Client 1. Want to see what is possible for you?
How to choose a B2B SEO company: a checklist and a scorer.
These checks separate a strong B2B SEO proposal from a generic one. Then score which kind of B2B SEO company fits how you buy.
- Names your buyers, their questions and the stage each page serves.
- Starts from a dated baseline: rankings, AI answers, traffic, enquiries, opportunities.
- Shows how leads are tracked from form to CRM, and who owns it.
- Technical work is specific to your site. Our technical SEO engagement guide shows what good looks like.
- Case studies come from a sales cycle like yours, with dates and sources.
- Sets out days 30, 60 and 90; compare it with what an SEO agency should deliver in 90 days.
- Covers AI answers, with mentions and citations reported apart from rankings.
- Says who does the work, how often you meet, and how you can leave.
- Promises no ranking position: Google’s guidance says to look elsewhere if an SEO promises first place.
Which kind of B2B SEO agency fits you?
Answer six questions. The scorer suggests a type of agency and a first-call question, not a name. Nothing you choose is sent anywhere.
Suggested type: a content-led organic growth agency
Change any answer to update the suggestion.
Check your content gaps first ↗The scorer reflects how you buy, not how good any agency is. Call two or three agencies of that type and compare their answers.
Where to start with a B2B SEO agency.
Shortlist by type, then judge on evidence: a dated baseline, a tracking plan and case studies from a sales cycle like yours. Any agency in this guide, and we hope ours, should welcome those questions.
If you would like to see how we would approach your site first, our SEO services for B2B companies start with the same audit, at no charge. You get the findings whether or not we work together.
Questions buyers ask.
Which are the best B2B SEO agencies in the US?
Counting names across 19 ranking lists on 13 November 2026, the five named most often with a B2B or SaaS SEO page and public case studies were RevenueZen, Omniscient Digital, Directive, Siege Media and Skale. The right one depends on how your buyers decide and what you want measured.
What does a B2B SEO agency do differently?
A B2B SEO agency plans for buying committees and long sales cycles. It builds pages for each research stage, answers technical and commercial questions, covers how AI chatbots describe you, and reports qualified opportunities and revenue, not traffic alone.
How do I choose a B2B SEO company?
Ask each B2B SEO company the same questions, ask for case studies from a sales cycle like yours, and check every proposal starts from a dated baseline. Compare how each will track leads into your CRM, not only how it will grow traffic.
Do B2B SEO agencies now cover AI search?
All five in this guide describe AI search work on their own sites, as generative or answer engine optimisation. Ask which buyer questions they test, how often, and whether mentions and citations are reported apart from rankings.
Can I see an audit before I hire a B2B SEO agency?
Prolinkage starts every relationship with an audit of your website, carried out without any charge, showing where you appear in search and AI answers and what to fix first.
Sources, all read 13 November 2026: 19 “best B2B SEO agencies” ranking lists (9 from the DataForSEO Google US desktop top 10, pulled 13 November 2026); each profiled agency’s own website; G2, “The Answer Economy”, 15 April 2026; Pew Research Center, 22 July 2025; Google Search Central, “Do you need an SEO?”. Prolinkage client figures: the clients’ HubSpot, Universal Analytics, GA4 and Semrush data, and a Clutch-verified review of 3 July 2024, names withheld.