Best B2B SaaS SEO Agencies

B2B SaaS SEO is a narrower specialism than most people expect. Trial-to-paid research journeys, “alternatives to” and comparison pages, product-led content, and buyers who try the product before they’ve even spoken to sales all make it a genuinely different discipline from general SEO. Not every agency that lists “B2B” or “tech” as a sector on their website has actually built a process around it, plenty are generalists who take software clients rather than agencies built around them.

Here’s an honest, researched look at six agencies that have.

1. Skale #

London, UK. Founded 2019, 50+ distributed specialists.

Skale was built exclusively around B2B SaaS SEO from day one, working with a client roster that includes HubSpot, Typeform, TravelPerk, Piktochart, Attest, Flodesk, and Recruitee across sectors like HR tech, sales enablement, product analytics, and email marketing. Their reporting goes beyond rankings and traffic to SQLs, qualified signups, and new MRR, the metrics that actually matter to a SaaS board.

Genuinely good at: scale and process, built over six years of working exclusively with SaaS companies, with a large enough distributed team to run technical SEO, content, and link building as one coordinated programme rather than three separate vendors.

Worth weighing up: a 50+ person distributed team serving a wide client roster suggests real capacity, but also real competition for attention. Worth asking directly how many accounts your strategist is actually running at once.

2. Grizzle #

London, UK. Founded 2016, team of around 20.

Grizzle built its business around content-led SEO and digital PR for B2B and SaaS companies specifically, with a client roster that includes Semrush, Pipedrive, PandaDoc, Nextiva, ConnectWise, and Tide. Their published Pipedrive case study is unusually transparent: fourfold organic traffic growth, 33% of user signups, and 39% of global revenue attributed to organic work.

Genuinely good at: content as the primary growth lever, backed by a named case study with real, specific numbers rather than a vague “results-driven” claim. A smaller team than Skale means fewer layers between you and the work.

Worth weighing up: content and digital PR are the clear strength here; worth asking directly how technical SEO is resourced if your product has a genuinely complex crawl or indexation problem underneath the content work.

3. Omnius #

London, UK, with additional offices in Belgrade and Dubai. Founded 2021, team of 11–50.

Omnius focuses on SaaS, fintech, and AI companies specifically, with a founding team who spent over a decade inside software companies’ own marketing and demand-generation teams before starting the agency. Their client roster spans pre-seed startups through Nasdaq-listed companies, including Anna Money, Native Teams, and Global App Testing, and their service list leans into newer territory, SEO alongside GEO and AEO for AI-driven search specifically.

Genuinely good at: founder-level understanding of how SaaS and fintech companies actually buy and grow, plus an early, genuine investment in AI-search visibility rather than treating it as an afterthought bolted onto traditional SEO.

Worth weighing up: a newer agency than the others on this list, with offices spread across three cities. Worth asking directly who specifically would own your account day to day.

4. Impression #

Nottingham, UK, with offices in London, Manchester, and New York. Founded 2012, around 94 people.

Impression is a tech-focused digital marketing agency covering SEO, PPC, digital PR, analytics, and web development, with proprietary in-house tooling built to support a data-driven, experimentation-led approach. SaaS and tech sit alongside other sectors here rather than being the agency’s sole focus, but the tooling and technical depth are real.

Genuinely good at: scale and breadth, with real engineering investment behind the SEO offering rather than just headcount. A reasonable option if you want SEO handled alongside PPC, digital PR, or a web rebuild under one roof.

Worth weighing up: SaaS is one vertical among several for a 94-person, multi-office, multi-service agency. Worth confirming your account gets a specialist who actually understands trial-to-paid SaaS research journeys, rather than a generalist applying ecommerce or retail instincts to a software product.

5. Grow & Convert #

US and Europe, remote team, no stated HQ. Founded 2015 per its own about page (a directory lists 2017), around 20 writers and strategists.

Grow & Convert is a done-for-you content, SEO, and AI-search agency built by Devesh Khanal and Benji Hyam, publishing under the name since 2015. Its SaaS offer is built on what it calls the Pain Point SEO framework: bottom-of-funnel keywords like product category, comparison, and alternatives terms, backed by expert interviews, technical audits, link building, and conversion tracking. Its client list is unusually long for an agency this size, with Geekbot, Rainforest QA, ProductLed, Wrike, and LastPass among the names. Published results include +1,745 free trial signups for Geekbot and top-three rankings for 26 buying-intent keywords for Rainforest QA, self-reported and without published methodology.

Genuinely good at: content built to convert rather than to collect traffic. It argues buying-intent keywords convert at 4–5% or more, against under 1% for typical top-of-funnel content, and every service on its SaaS page is organised around that idea.

Worth weighing up: no published pricing or minimum, it asks for your blog traffic range before it’ll talk, and the team is spread across the US and Europe with no stated HQ. Ask who actually writes and reviews your content, what timezone overlap looks like, and how much of the team’s day-to-day is SaaS versus its non-SaaS clients.

6. Breaking B2B #

Location, founding year, and team size are not published anywhere I could find.

Breaking B2B is a B2B SaaS SEO and AEO agency led by Sam Dunning, who launched the brand after leaving his previous agency in January 2024. It works only with B2B and SaaS companies and says it turns away local businesses. Its pitch is a 90-day revenue plan targeting what buyers search when they’re ready to speak to sales or comparing alternatives, with content drawn from your own subject-matter experts and niche-relevant link building. Clients include Vidyard, RB2B, ClickHouse, Chili Piper, and Ahrefs, with self-reported results of +77% non-branded traffic for RB2B, 10x organic traffic for Fibbler, and 2x organic leads for Kubaru.

Genuinely good at: commercial focus. The whole offer is framed around pipeline and revenue rather than rankings, and it says engagements run with a senior team and no juniors.

Worth weighing up: plans start at $4k/month, with $7k+/month quoted as the average for a fast-growth programme on six or twelve month terms, a US-dollar, enterprise-leaning price point. Ask what the entry tier actually gets you, and who specifically would work on your account, since none of the basics (location, founding year, team size) are published anywhere to check against.

Questions to ask on the discovery call #

Run every agency on your shortlist through the same set of questions. The answers will tell you more than any homepage will.