OpenServed

Best Marketing SEO Agencies (2026) – Ranked by Case Studies

LinkDoctorVisit Website →
ArcStone Client-verified
SEO, Content Marketing
Marketing
11-50 Employees
N/A
Minneapolis, MN
N/A
  • 51% increase in organic keywords
  • 1,936.99% increase in organic traffic
  • Domain Rating from 51 to 54
Maxburst
SEO
Marketing
11-50 Employees
N/A
Farmingdale, NY
N/A
  • 156% increase in organic keywords
  • 452% increase in organic traffic
  • Domain Rating from 67 to 70
Logic InboundVisit Website →
Dave Biehn Marketing Client-verified
PPC, SEO
Marketing
1-10 Employees
N/A
Mercer Island, WA
N/A
  • Agency partnership providing digital strategy and measurement for the consultancy's clients
Fingerprint Marketing
SEO
Marketing
N/A
N/A
N/A
N/A
  • White-label SEO partnership that added SEO as an upsell for a web design firm
Affiliate Marketing Website
SEO, Content Marketing
Marketing
N/A
N/A
N/A
N/A
  • 216% increase in YouTube subscribers (37,500 to 81,200)
  • 187% increase in organic searches
Fu Dog MediaVisit Website →
In the Black Marketing & Consulting Client-verified
Web Design, SEO
Marketing
N/A
N/A
Charleston, SC
N/A
  • 150% business growth in the first year
  • Up to 10:1 return on investment for the client's own customers
Ink DigitalVisit Website →
Connect Management Client-verified
SEO
Marketing
51-200 Employees
N/A
London, United Kingdom
N/A
  • +63% increase in organic impressions
  • +29% increase in organic clicks from high-intent keywords
  • +8.4 average keyword position improvement across 20 core phrases
Bop DesignVisit Website →
Olberding
Web Design, Web Development, SEO
Marketing
201-500 Employees
N/A
Cincinnati, OH
N/A
  • 56.02% increase in users
  • 60.37% increase in sessions
  • 104.02% increase in page views
  • 27.22% increase in pages per session
  • 67.83% increase in avg. session duration
Pipeline360
Web Design, SEO, Branding
Marketing
201-500 Employees
N/A
Phoenix, AZ
N/A
  • 80.25% increase in sessions
  • 97.02% increase in engaged sessions
  • 111.51% increase in organic search
  • 146.68% increase in direct
  • 138.85% increase in average session duration
Coalition TechnologiesVisit Website →
Main Street Hub
PPC, SEO
Marketing
N/A
N/A
Austin, TX
N/A
  • 17.70% Increase in Organic Traffic Had
  • 12,926 Organic Sessions
  • 179 Conversions
777 Sign
PPC, SEO
Marketing
11-50 Employees
N/A
Las Vegas, NV
N/A
  • 61.53% Increase in Goal Conversion Rate
  • $21,134.65
Signify Digital LtdVisit Website →
Origin Comms
SEO, Content Marketing
Marketing
1-10 Employees
N/A
Thames Ditton, United Kingdom
N/A
  • 43.27% increase in organic website traffic in 2022 versus 2021
  • 20.77% YoY increase in social media traffic during 2022
  • Average social engagement rate over 10% in the first 6 months
Major TomVisit Website →
Criteo
SEO
Marketing
1K-5K Employees
N/A
Paris, France
N/A
  • 200% increase in organic SEO traffic
  • 78% increase in website conversions
  • 400+ videos optimized for YouTube
BraftonVisit Website →
Agile Education Marketing
SEO, PPC, Content Marketing
Marketing
11-50 Employees
N/A
Denver, CO
N/A
  • 74% increase in MQLs YoY
  • 40% increase in sales opportunities
  • 108% increase in closed MQLs
  • ~7% consistent MoM organic traffic increase
Single GrainVisit Website →
Single Grain
SEO
Marketing
51-200 Employees
N/A
Los Angeles, CA
N/A
  • 300% ROI in 9 Months
  • 742 Leads Generated (114 High-Quality MQLs)
  • 1,549 Organic Backlinks Earned
  • 160,000 Impressions Per Day
CB/I DigitalVisit Website →
Cimigo
SEO
Marketing
N/A
N/A
Ho Chi Minh City, Vietnam
N/A
  • Enhance the brand awareness on search engines and drives new customers to the site
ImageThink
PPC, Web Development, SEO
Marketing
N/A
N/A
Brooklyn, NY
N/A
  • SEO drove more than 50% of revenue
  • Fortune 1000 B2B leads via SEO and SEM
Search Business GroupVisit Website →
Sparkhouse
SEO, Web Design
Marketing
N/A
N/A
California, United States
N/A
  • Conversions up 5x and bounce rate down 3x
  • Year-over-year revenue +400%
  • 38,000+ visits
  • 158+ form fill-ups and 220+ phone calls
  • $2.3M+ revenue generated by SEO
Nation Media DesignVisit Website →
MetroNova Creative
SEO, Branding
Marketing
N/A
N/A
N/A
N/A
  • +334% organic traffic from a targeted keyword strategy
  • +6.86% keyword rankings across core service terms
  • $516 / mo. saved on paid ads through organic gains
  • Brand Identity complete brand personality and visual language
Intero DigitalVisit Website →
Parker White
SEO
Marketing
11-50 Employees
N/A
Cardiff, CA
N/A
  • +7,083% First-Page Rankings