These are the 8 agencies in the directory closest to LeanScale on category, industries, stack, team size and starting price, most similar first.
LeanScale ranks #1 in AI Sales Agencies. It quotes on request. Its best fit, in our words: Venture-backed software companies that need CRM, reporting and AI workflows operated by an embedded team, and that are not buying booked meetings.
Best forCompanies that need SDRs working next month and want the CRM, workflow and reporting behind them built by the same firm.
Also ranked in AI Sales Agencies; works with SaaS companies; both build on Salesforce, HubSpot and Clay.
If the problem is that there is nobody to make the calls, demandDrive is a reasonable answer, and a better one than most staffing-shaped vendors because it can also build the CRM, workflow and reporting layer the sellers work inside. That combination, plus HubSpot Diamond status and operating history back to 2011, makes it the best evidenced firm in the outsourced group here.
The main cautionThe core business is recruiting, training and renting out SDRs, so the AI framing overstates how much of delivery is software
HQ
Waltham, United States
Team
51-200
Pricing
From $5k$5,000+ minimum project size (Clutch-displayed); nothing published on its own site
Best forTeams that want GTM engineering and outbound run as an ongoing subscription and do not need to own the system at the end of it.
Also ranked in AI Sales Agencies; works with SaaS companies; both build on Salesforce, HubSpot and Clay.
The engineering menu is credible and the tooling is more serious than the category average, with Snowflake and n8n sitting alongside the usual Clay and Apollo stack.
The main cautionPublishes no statement that the client owns what gets built, unlike its closest peers here
HQ
New York, United States
Team
Not published
Pricing
From $5k$5,000+/month with a three-month minimum (Clay partner directory); own site sells content and outbound as subscriptions and RevOps and ABM as sprints, with no figures published
Best forBuyers who want both a revenue system and people to work it, and who will specify in the contract how much of each they are paying for.
Also ranked in AI Sales Agencies; works with SaaS companies; both build on Salesforce, HubSpot and Clay.
FullFunnel is a genuine hybrid, and that is neither a criticism nor an accident: a company that needs a system built and has nobody to run it can get both from one vendor here, on a one-month commitment that is unusually short for this tier.
The main cautionSells white-labeled SDR and AE teams next to its engineering work, with Clutch putting 15% of the business in sales outsourcing, so a buyer expecting a system can be sold sellers
HQ
Boston, United States
Team
11-50
Pricing
From $5k$5,000+/month with a one-month minimum (Clay partner directory and HubSpot's directory), the shortest commitment among Clay's top-tier partners
Best forRevenue leaders who want a HubSpot or Salesforce revenue system built and documented by an outside team, and who need to know the cost before the first call.
Also ranked in AI Sales Agencies; works with SaaS companies; both build on Salesforce, HubSpot and Clay.
RevPartners is the clearest buy in this category for a company that wants a revenue system rather than rented sellers.
The main cautionOne Clutch review against a 2020 founding and a team HubSpot's directory puts at 250 people
HQ
Not published
Team
51-200
Pricing
From $2kPublishes a full rate card: HubSpot Sales Hub Fast Track from $1,500; RevOps as a Service $9,850-$27,000/month on a six-month initial term plus a $5,000 onboarding fee; Clay implementation $25,000 one-time
Best forCompanies that want outbound campaigns run for them at volume and will use the agency's own advice to settle workspace ownership in the contract.
Also ranked in AI Sales Agencies; works with SaaS companies; both build on Salesforce, HubSpot and Clay.
Best forCompanies with $10,000 a month to commit to GTM architecture and CRM transformation, and no objection to the firm now sitting inside a larger marketing services group.
Also ranked in AI Sales Agencies; works with SaaS companies; both build on Salesforce and Clay.
The work sits at the architecture end of this category and the credentials behind it are real: Clay lists The Kiln at Elite Studio tier, and Clay is itself a named client, which is a specific kind of reference.
The main cautionNo longer independent: a banner on its own site states it was acquired by 2X in January 2026, and standalone team size is no longer published
HQ
Brooklyn, United States
Team
Not published
Pricing
From $10k$10,000+/month with a three-month minimum (Clay partner directory); the highest published entry price among Clay's top-tier partners
Nebor suits a European B2B company that wants a Clay-based outbound engine and CRM cleanup built inside its own accounts by a small team that does the work itself.
The main cautionThe outside record is ten G2 reviews, nine under the former name, and two may come from insiders: the newest Utmost Agency review is signed Yannick K., matching co-founder Yannick Kok, and the only Nebor review is signed Colin B., matching the Colin Bakker who wrote the seller overview.
HQ
Haarlem, Netherlands
Team
2-10
Pricing
MixedPublishes no prices; quotes on request. Its site describes a one-time setup fee plus monthly monitoring, and Clay's partner directory lists any budget with a three-month minimum engagement.
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