8 Best SEO Agencies for B2B SaaS (Compared on Pipeline Proof)

One of the case studies in this guide, covering a 2025 engagement (early 2025 to Q3 2025), reports a 385% rise in monthly organic conversions from a 41% rise in clicks. Read that again: a modest traffic gain produced almost ten times the growth in conversions. That's what good B2B SaaS SEO looks like, and it's the opposite of what most agencies sell you, which is a traffic chart that climbs while the sales team still asks where the demos are.

The gap between visible traffic and the pipeline you can't see is the most common reason a SaaS team goes looking for outside help. So this guide ranks agencies on one thing: whether they know which searches turn into trials, demos and SQLs, and whether they'll report on those numbers instead of sessions.

Below you'll find a verdict up front, a comparison table, an honest take on each firm (including who should skip it), and a "how to choose" section organized by the situation you're actually in. Everything below was checked on 15 Oct 2026 against agency websites, Clutch and public posts. Nobody here was hired or tested for this piece.

TL;DR: the verdict

If you only read one section, read this one.

1. Miraa is the pick if your site has been hurt by scaled AI content or you want bottom-funnel and AI-search pages on a fixed monthly price. Its newest case study (five sibling cold-outreach products) shows organic clicks up 117.7% year over year.

2. Omniscient Digital is the pick if the blog is already your main growth channel. Its Teambridge study is the best-documented pipeline result on this list.

3. SimpleTiger is the pick if you want SEO, AEO and PPC from a shop that only works with SaaS. Its Invoca case reports $500,000+ in pipeline from AI search alone.

The rest, in brief: Directive if SEO has to sit inside paid and RevOps; Siege Media if your category is won on links; Kalungi if you have no marketing team at all; RevenueZen if you need a written price before a call; Gripped if you're a UK SaaS past £2M ARR.

At a glance

How we chose these agencies

We looked for four signals on each agency's own site:

1. A SaaS or B2B software focus. Generalist shops with one SaaS logo didn't qualify.

2. Named SaaS clients or case studies. Anonymous "a leading SaaS company" claims count for less than a named brand.

3. Revenue-side reporting: language about signups, demos, SQLs, MRR or pipeline, as opposed to traffic alone.

4. A stated approach to AI search. Buyers now shortlist software in ChatGPT and Perplexity, so we checked whether each agency says how it handles that.

Not every agency shows all four. Where one is missing, the entry says so, and you can use the gap as a question on the sales call. Public pricing only broke ties, since plenty of good agencies quote on a call.

After Miraa, the order groups agencies by the problem each one solves best. An agency higher up isn't "better" than one further down.

Services and reviews side by side

1. Miraa

Miraa is a B2B SaaS SEO agency that also runs AEO. It works with B2B SaaS and AI companies and reports on demos, SQLs and pipeline from organic and AI search. Its angle on this list is cleanup: it is the one firm here that leads with recovering sites hurt by thin AI content, cannibalization, crawl waste and index bloat.

Services

Miraa offers ten services:

• Product-led SEO: pages built around what the product does, such as features, use cases and integrations.

• Content-led SEO: a revenue-first keyword plan that puts bottom-of-funnel topics ahead of volume.

• Technical SEO: crawling, rendering and indexing fixes.

• On-Page SEO: titles, headings, internal links and copy on pages that already exist.

• SEO Site Migration: protecting rankings through a redesign, re-platform or domain change.

• SEO Website Recovery: diagnosing and reversing traffic losses, including after scaled AI content.

• AEO/GEO: answer engine optimization and generative engine work across ChatGPT, Perplexity, Claude, Gemini and Google AI Overviews.

• Content Writing: expert-written SEO content.

• Link Building: earning links and mentions through digital PR.

• Agentic SEO/GEO: AI agents built into the search workflow.

Pricing

Every one of Miraa's three plans includes a pipeline view, so you can judge the work in demos. At $2,500/month, Basic Growth pairs agentic SEO strategy and bottom-of-funnel content with GEO, AI search visibility and a monthly pipeline report. At $3,500/month, Growth+ adds programmatic SEO, human-led content and lead magnets. At $5,000/month, Hyper-Growth adds custom agent development and a revenue attribution layer.

Reviews

No Clutch or G2 review profile found.

Clients

Named clients include Salesforge, Leadsforge, Mailforge, Zapmail, Icypeas, Upsolve, ResumeBuild and Wrenly. Miraa publishes four case studies (retrieved 15 Oct 2026). The newest one is named; the other three are not:

• Forge family (Salesforge, Mailforge, Warmforge, Primeforge, Infraforge): five sibling cold-outreach products with overlapping audiences. Miraa split the keyword map so each domain owns its own intent, then built competitor reviews, alternatives pages and pricing comparisons. Comparing Apr–Jun 2025 with May–Jul 2026 in Search Console, organic clicks rose 117.7% to 75,416 a quarter, impressions rose 339% to 19.6M, and average position moved from 23.5 to 9.4. Salesforge alone went from 27,750 to 47,493 clicks a quarter, and Ahrefs counted 2,100 Salesforge citations in Google AI Mode in Aug 2026.

• Marketing automation (email automation SaaS, unnamed): $1M to $3M ARR in 12 months and a 40% cut in CAC. A week-one audit found crawl-budget issues that had halved index coverage.

• Sales automation (LinkedIn automation tool, unnamed): 200+ qualified leads in the first 90 days and $2M ARR within 18 months.

• AdTech (AI ad platform, unnamed): $25K MRR in the first quarter and 45% of leads from organic discovery.

Summary

Miraa earns the top spot because its newest study is the kind of proof this list asks for: a named client, a defined date range, Search Console numbers and AI-citation counts in one place. Its recovery angle is also rare; most agencies here sell growth, not cleanup.

The honest cons: there are no Clutch or G2 reviews yet, so you're relying on Miraa's own write-ups and a reference call. Three of the four studies are anonymized. And a $2,500 entry plan is a real commitment for a pre-revenue team that still needs product-market fit more than search.

Good fit: SaaS teams with bottom-funnel searches to win, or a site dragged down by thin AI pages.

Poor fit: you're pre-launch, or you need third-party reviews before you shortlist anyone.

2. SimpleTiger

Search and paid media under one roof, for SaaS companies only: that's the whole SimpleTiger pitch, and it's rare to see a shop turn down every other vertical.

Services

• "Search Visibility (SEO + AEO)"

• Answer engine optimization

• PPC for SaaS

• Web design

Pricing

The pricing FAQ is unusually candid about how it sets fees. It says each SEO package "starts at 5% of revenue or funding at the respective growth stage" the package targets, and that the main difference between tiers is execution budget for content and links. The packages are custom, so you won't see a dollar number until a call.

Reviews

Clutch shows 4.9/5 from 32 reviews. Two recent reviews, quoted from the headline line Clutch shows for each (checked 15 Oct 2026):

• Feb 5, 2026, Business Director at an EMR company: "They are very organized and employ project management tools to ensure alignment and visibility."

• Dec 23, 2025, Co-Founder at Blueprint Solutions LLC: "SimpleTiger LLC has a very well-planned execution strategy."

Clients

Its Invoca case study (retrieved 15 Oct 2026) goes well beyond a headline ROI figure. SimpleTiger reports, for the first 10 months of AI search and traditional SEO work:

• 41:1 ROI

• $3M+ in revenue generated through AI and organic search in 2025

• 600,000+ organic site visits

• 22.5% share of voice in AI search

• over $500,000 in new pipeline from AI search alone

Derek Anderson, Content Marketing & SEO Manager at Invoca, is quoted calling the team "experts in their field and very responsive." A testimonial from SOMA Software sits next to its pricing FAQ.

Summary

SimpleTiger's Invoca study is one of the two strongest named results here, and the AI share-of-voice figure shows it already reports on AI search properly. Its pricing FAQ admits its SaaS-only focus "has its tradeoffs." The weak spot is transparency: a formula tied to your revenue isn't a number, so your cost stays unknown until a call.

Good fit: SaaS teams that want search and paid from one SaaS-only shop.

Poor fit: you need a fixed price on paper before you'll take a meeting.

3. Omniscient Digital

Omniscient Digital is an organic growth agency for B2B software companies. Its homepage says it gets brands recommended across AI and search engines, then turns that visibility into pipeline.

Services

SEO strategy, answer engine optimization, programmatic SEO, technical SEO, link building, digital PR and content production.

Pricing

Not published.

Reviews

Clutch lists 4.8/5 from 6 reviews (checked 15 Oct 2026). Two March 2026 review headlines:

• Mar 23, 2026, Sr Content Writer at Mozilor Technologies: "They provided a clear, research-backed direction along with detailed briefs that helped us move forward confidently."

• Mar 18, 2026, Head of Marketing at an IT company: "Their level of industry expertise, experimental approach, and the quality of the deliverables are impressive."

Clients

Omniscient names its clients. The most recent case with revenue numbers:

• Teambridge: Omniscient's Teambridge case study (engagement described as starting in early 2025, results through end of Q3 2025) reports $400,000 in qualified pipeline, a 385% increase in monthly organic conversions, 128% growth in top-20 rankings, an 89% increase in monthly search impressions and a 41% increase in monthly search clicks. Josh Hornthal, Head of Marketing at Teambridge, is quoted: "They took our unique positioning and messaging and turned it into an SEO program that drove qualified pipeline."

• Order.co and Convert also have case studies on the homepage, and Dave Gerhardt of Exit Five is quoted on content quality.

The homepage also quotes Jasper on blog-driven revenue, but its Jasper case study dates from 2022, so treat it as background.

Summary

Omniscient publishes the most complete pipeline story on this list, with a dated engagement and five separate metrics. That's the bar. The catch is cost: no public rate and only six Clutch reviews, so you'll have less outside evidence than with SimpleTiger or Siege.

Good fit: B2B software companies whose blog already drives signups and who want to push it harder.

Poor fit: your blog isn't a growth channel yet, or you need a price before the first call.

4. Directive

Directive (Directive Consulting, based in Irvine, California) is a B2B performance marketing agency. Its site says it has worked with "ambitious B2B businesses since 2013" and spends "$2.2M annually on marketing R&D."

Services

SEO and content sit next to paid media, creative and revenue operations. If your real problem is attribution (paid and organic stepping on each other, nobody trusting the numbers), an agency that runs both channels sees both sets of data.

Pricing

No figures on the site. Expect a scoped proposal, since SEO is usually sold as part of a wider program.

Reviews

Its Clutch profile shows 4.8/5 from 56 reviews, the most of any agency here (checked 15 Oct 2026). The newest is dated 2 Jan 2025, from iCIMS's Sr. Manager of Digital Experience & Performance, who called it "the strongest agency I've worked with to date." No review on the profile falls inside the last 12 months.

Clients

The homepage names no SaaS client. It links to a case studies library, so ask for SaaS examples at your stage.

Summary

Directive has the most Clutch reviews here, but the newest is from January 2025, and the homepage names no SaaS client. It makes sense when SEO is a line inside a paid and RevOps program, not when SEO is the whole job. A specialist will likely give you more senior time for the same money.

Good fit: mid-market and enterprise teams whose paid and organic numbers don't agree.

Poor fit: SEO is the only thing you need, or you want recent SaaS proof.

5. Siege Media

Siege Media is a content agency that now calls itself a full-service GEO agency. It is best known for content programs that earn links.

Services

Content marketing, digital PR, Reddit, affiliate partnerships and GEO. It suits crowded categories where you need data studies and tools that earn links on their own. Its research library includes work on how AI answers pick brands.

Pricing

Siege keeps its rates off this part of the site.

Reviews

Clutch shows 4.9/5 from 48 reviews. Two recent ones (checked on Clutch, 15 Oct 2026):

• Aug 31, 2026, Content Director at an online therapy platform: "They were punctual, thorough, and incredibly open to feedback." Over the year-long engagement (August 2025 to August 2026), the reviewer reports a more than 400% jump in AI visibility across the prompts it tracks most closely.

• Jul 10, 2026, Director of Paid Digital Advertising at Pacaso: "Siege Media's organization and documentation procedures are very impressive."

Clients

One Siege article walks through how Ramp tracks AI traffic, with Ramp's SEO, GEO and CRO lead, Eric Wu. On 13 Oct 2026, Siege posted on X that founder Ross Hudgens's new GEO book includes case studies from Zapier and Bluevine.

Summary

Siege is the agency to beat when links decide rankings. The August 2026 review reporting a 400%+ jump in AI visibility is recent and specific. It isn't SaaS-only, so the SaaS evidence is thinner than its overall record.

Good fit: brands in crowded categories where content quality and earned links win.

Poor fit: you need bottom-funnel comparison pages shipped fast more than you need linkable assets.

6. Kalungi

Kalungi works as an outsourced marketing department for B2B SaaS, built around its T2D3 playbook.

Services

Full outsourced marketing. SEO is one part of the go-to-market plan, next to demand generation, brand and paid. The homepage doesn't describe an AI-search approach, so ask about it.

Pricing

Kalungi quotes per engagement, which makes sense for an outsourced department whose scope varies widely.

Reviews

Its Clutch profile has no reviews yet, so the evidence here is Kalungi's own case studies.

Clients

The case studies reflect the outsourced-department model:

• DataGuard: "from zero marketing to a full growth engine in under six months," with "$4M in pipeline."

• CPGvision: "$4.7M in pipeline with 533% SEO growth."

• Beezy: "63% organic traffic growth" and "$2M in qualified pipeline."

• Avid is also named among its case studies.

Summary

Kalungi's pipeline figures are strong, but they come from its own case studies, since its Clutch profile has no reviews. It's really an outsourced marketing department with SEO inside it, which is exactly right for some teams and wasteful for others.

Good fit: early-stage SaaS with no marketing hire yet.

Poor fit: you already have a marketing team and only need SEO; you'd be paying for leadership you have.

7. RevenueZen

RevenueZen calls itself a GEO-focused B2B SEO agency, with content built from interviews with your subject experts.

Services

GEO-focused SEO, SME-interview content, content refreshes, audits and AI brand monitoring.

Pricing

Listed openly on its site (retrieved 15 Oct 2026):

• Foundation, $3,000/month: 4 articles, 3 page refreshes, an ongoing audit of your top 10 URLs and AI brand monitoring with a monthly report

• Growth, $5,000/month: 6 articles, plus schema and GenAI topic research

• Accelerate, $7,000/month: 8 refreshes a month and 4 links a month

The FAQ says you can go month to month, with 6- and 12-month terms at a discount, and that onboarding usually takes 30 to 45 days.

Reviews

Clutch shows 4.9/5 from 38 reviews (listed as RevenueZen by Eastern Standard). The newest review we found is from 1 Oct 2025, so none falls inside the last 12 months.

Clients

Clients are named on its case study pages. RevenueZen serves B2B companies broadly, so look for a case with a sales motion like yours.

Summary

RevenueZen is the easiest firm here to budget for: three written tiers, GEO included, and month-to-month terms. The trade-off is fresh evidence. Its newest Clutch review is from 1 Oct 2025, outside the last 12 months, and it serves B2B broadly rather than SaaS alone.

Good fit: budget-conscious B2B teams that want a price and a term before a sales call.

Poor fit: you need recent, SaaS-specific proof to justify the spend internally.

8. Gripped

Gripped is a London B2B marketing agency that has worked with SaaS, AI and tech companies since 2017. It focuses on companies "typically between £2M and £50M ARR."

Services

SEO and GEO next to paid search, paid social and ABM. Its homepage results lean on paid search and paid social; SEO and GEO are in the mix but aren't the headline.

Pricing

Gripped's site (retrieved 15 Oct 2026) says most clients spend £5K to £15K a month, and most marketing leaders invest £8K to £12K. One FAQ describes rolling contracts with three months' notice, while another says it works on 6 to 12 month engagements, so ask which term applies. It also gives timelines in writing: pipeline impact in 3 to 6 months and revenue impact in 6 to 12 months. Media spend is extra.

Reviews

Clutch shows 4.9/5 from 32 reviews. Two recent review headlines (checked 15 Oct 2026):

• Dec 19, 2025, Demand Marketing Manager at Terryberry: "The detail and insights from Gripped's monthly meetings have been very impressive."

• Nov 20, 2025, Digital Marketing Manager at an IT services company: "They consistently demonstrate a willingness to learn about our needs."

Clients

It names Ideagen, Epicor, Ravelin and Crownpeak among more than 160 companies. The homepage results come from paid channels, such as £1.3m in new pipeline in one quarter from paid search and social. If organic search is your priority, ask for SEO case numbers.

Summary

Gripped is unusually honest about timing, putting pipeline impact at 3 to 6 months in writing. But its showcased results come from paid search and social, and its FAQs disagree on contract length. Treat it as a demand agency that also does SEO.

Good fit: UK SaaS past £2M ARR running SEO next to paid and ABM.

Poor fit: organic search is your main bet and you want SEO-specific case numbers.

Price tags you can see before a call

Half the list puts numbers on its own site. The other half quotes after a discovery call. As of 15 Oct 2026:

Omniscient, Kalungi, Directive and Siege Media don't publish retainers. If budget is your first filter, start with Miraa, RevenueZen or Gripped, then ask SimpleTiger what its formula means for your ARR.

If you're evaluating SaaS SEO agencies, watch for these

Most of these firms will pitch you well. The differences show up in the details of the proposal and the answers to a few awkward questions. Watch for these red flags:

The first is a proposal with traffic targets but no pipeline line. If it promises sessions, rankings or "visibility" and never mentions demos, trials or SQLs, the agency will optimize for what it reports. Ask them to put a pipeline metric in the statement of work.

Next, look at how the keyword plan is ordered. One that opens with "what is [category]" posts and leaves "[competitor] alternatives" for month six is a traffic plan. If they can't talk about comparison and alternatives pages or other bottom-funnel URLs, assume that's what you're buying.

Be wary when every proof point is anonymous. "A leading SaaS company grew 300%" can't be checked. A named case with a revenue number can. SimpleTiger's Invoca study and Omniscient's Teambridge study (early to Q3 2025) set the bar on this list.

AI search reporting is another tell. Buyers shortlist software in AI assistants now. If an agency can't tell you whether demos from ChatGPT or Perplexity will be reported separately, the way SimpleTiger reports Invoca's AI share of voice, it hasn't built that reporting yet.

Then there's authorship. Google's spam policies target scaled content built to rank. Ask who writes, who reviews AI drafts, and ask for a name and a sample.

Finally, check the exit terms. RevenueZen's month-to-month option and Gripped's three months' notice are written down. Get the same in writing from everyone else before you sign.

Then ask these on every shortlist call:

1. Can you show me a named SaaS case with a revenue number, from a company at my stage?

2. Which pages on a past client's site led to closed-won deals, and how do you know?

3. What will the first 90 days ship, by URL type?

4. Who on my team do you need, and for how many hours a month?

5. What happens if pipeline doesn't move in the first two quarters?

A good agency answers these without a follow-up email. For a reporting setup you can hold any agency to, see the B2B SEO pipeline attribution guide.

The pipeline conversation a good agency starts

The best signal on a first call is often a question you didn't expect. A SaaS-native agency will usually want to see three things before it pitches a plan.

Start with your closed-won data. Which pages did recent customers touch before they booked a demo? Even a rough export from your CRM shows whether the blog, pricing, comparison pages or integration pages are doing the work. An agency that skips this step is guessing.

Then your sales cycle. A product with a two-week trial and a product with a nine-month enterprise cycle need different SEO plans. The first can judge content by trial starts within a quarter. The second needs to track influence on opportunities that close long after the first visit. Gripped's written timeline (pipeline impact in 3 to 6 months, revenue impact in 6 to 12) is a useful example of an agency being upfront about this.

Last, your competitors' bottom-funnel pages. Which "vs," "alternatives" and "best [category] software" pages already rank, and who owns them? If an aggregator or a competitor owns every one, the plan needs a different route in than if those results are thin.

If an agency asks for all three, you're likely talking to someone who reports on pipeline. If it asks for none, expect a deck about domain authority.

How the first year usually goes wrong

Even with a good agency, B2B SaaS SEO programs tend to fail in the same few ways. Knowing them in advance lets you write the guardrails into the contract.

The first failure is a calendar full of top-of-funnel posts. Definitions and "ultimate guides" are easy to brief and easy to rank, so they crowd out harder work. Six months in, traffic is up and pipeline is flat. The fix is a ratio: agree upfront what share of each month's output goes to comparison, alternatives, integration and use-case pages.

The second is that nobody sets up attribution before launch. If you start tracking demo sources in month four, you can't show what changed. Before the first page ships, make sure your forms capture a "how did you hear about us" answer and your CRM records the first and last organic landing page.

Third, scaled content quietly drags the site down. Publishing dozens of thin AI drafts can bloat the index and split rankings across near-duplicate URLs. That's the cleanup problem Miraa's recovery work and its case study's crawl-budget finding describe. Ask how many pages the agency plans to publish, how many it plans to merge or delete, and who signs off on each.

Fourth, AI search ends up in a separate silo. Some teams hire one firm for Google and another for AI answers, then watch them optimize different pages. Most agencies on this list run both together, so you rarely need two contracts.

And finally, the champion leaves. Agency programs often stall when the marketing lead who hired them moves on. Keep the keyword plan, briefs and reporting in your own workspace, so the work survives a change of owner on either side.

None of these are reasons to avoid hiring. They're reasons to put specific numbers and owners into the first statement of work.

How to choose: start from your situation

If you have no marketing hire and you're pre-Series A, pick Kalungi. A pure SEO shop will hand you a plan nobody internally can run.

If you have a marketing lead and clear bottom-funnel searches, pick Miraa or SimpleTiger. Choose Miraa for a fixed monthly price and bottom-funnel pages first; choose SimpleTiger if you also want PPC run by the same team.

If your blog already drives signups, pick Omniscient. It's built to compound a content engine that already works.

If your site lost traffic after a burst of AI-written pages or a migration, pick Miraa, and treat it as recovery before growth. Any agency you talk to should name the pages it would merge, redirect or remove before writing anything new.

If paid and organic numbers never agree, pick Directive, or Gripped if you're a UK team past £2M ARR.

If your category is full of well-funded competitors, pick Siege Media and budget for links and original research, not just pages.

If you can't sign anything without a written price and an easy exit, pick RevenueZen.

Where to start

Every agency here talks about pipeline. They differ in how much proof they publish. Use the comparison table to pick two or three, then ask each one for a case study from a company at your stage. If you need a specialist inside the same cluster, see the lists of technical SEO agencies for SaaS and SaaS link building agencies. If AI search matters as much as Google, the AEO agencies for B2B SaaS list compares who can show citation proof.

Related reading

• B2B SaaS SEO: The Pipeline-First Guide

• Fintech SEO agencies

• SEO agencies for sales automation software

• AEO agencies for agentic AI companies

• Comparison and alternatives pages

• What is AEO?