Vendar ranks 5 of 15 SEO agencies serving Chicago for B2B SaaS SEO: the ones with documented B2B SaaS SEO work on file, verified through September 2026. The top three by evidence-weighted score are Marcel Digital (63/100), Orbit Media (62) and Solid Digital (62). No paid placements; every position below cites its sources. 10 more Chicago SEO agencies have no B2B SaaS SEO claim on file yet and are listed unranked.
Ranked agencies have at least one claim from an outside source that names B2B SaaS work: pipeline or demo requests from organic, product-led content, comparison and alternative pages, or a named SaaS client; official case studies and third-party reviews weigh most, profile tags least. Full rubric 2026.09 and the scoring model: How we rank.
Grouped by the clients named in documented B2B SaaS SEO work: client reviews and case studies, not the agencies' own positioning. The number is the place in the ranking below.
Grouped by the clients named in documented B2B SaaS SEO work: client reviews and case studies, not the agencies' own positioning. The number is the place in the ranking below.
“Independent” means a third-party source names B2B SaaS SEO work. Each profile holds the claims with their sources; the points per criterion behind every position are in the machine-readable feed.
Chicago, IL, USA · team 10-49 · since 2003
HQ in Chicago · From $6,000/month no outside source
Marcel Digital's own B2B SaaS SEO case study for Medius, a spend management and AP automation software company, describes aligning SEO with its ideal… (marceldigital.com)
Chicago, IL, USA · team 10-49 · since 2001
HQ in Chicago · From $4,500/month no outside source
Orbit Media's own case study for Experity, a software company selling EMR software to urgent care clinics, reports a 91% year-over-year increase in demo requests and a 25-position gain in average ranking for priority keywo… (orbitmedia.com)
Chicago, IL, USA · team 10-49 · since 2007
HQ in Chicago · From $2,500/month no outside source
Portfolio covers web design, branding, marketing, nonprofit, and software integration projects for B2B SaaS, healthcare, fintech, and nonprofit clients. (soliddigital.com)
Chicago, IL, USA · team 10-49 · since 2017
HQ in Chicago · From $5,000/month no outside source
VisualFizz's own B2B SaaS SEO case study for Wise Systems, a dispatch and routing software company, describes technical cleanup, redirect mapping after a… (visualfizz.com)
Chicago, IL, USA · team 10-49 · since 2001
HQ in Chicago · From $10,000/month no outside source
Walker Sands' own case study for Sendbird, a chat and video API software company, describes a content and technical SEO strategy with new optimized pages and reports organic search traffic +54% and organic search conversion… (walkersands.com)
On the Chicago SEO list, but nothing on file names B2B SaaS SEO work. One sourced claim moves an agency into the ranking.
No B2B SaaS SEO claim on file yet.
Only Vendar profile tags name B2B SaaS SEO; no outside source on file yet.
Evidence-weighted ranking 2026.09.1: each agency is scored on the B2B SaaS SEO query from claims with sources. Evidence for this query 30 · Fit to this query 25 · Capability depth 15 · Reliability 10 · Transparency 10 · Reputation 5 · Market credibility 5, minus penalties; confidence is shown separately. Paid visibility never changes the order of a listing. The points, the claims and the limits behind every position are on its card above; the criteria, penalties, eligibility and ordering rules are on How we rank.
The buyer is a committee and the journey ends in a demo or a trial, not a cart. Comparison, alternative and use-case pages carry that traffic, and the work has to survive the product changing under it.