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The Customer Success Outsourcing Registry

The companies listed below are offering Customer Success outsourcing and/or Fractional Customer Success Leadership services.  For a list of specific outsourcing services together with the names of the companies who provide them, please see The Customer Success Outsourcing Catalog page.  Companies marked with an asterisk are members of The Customer Success Advisors program.

A listing on this page does not in any way constitute an endorsement of any company by The Customer Success Association.

Updated:  6/5/2025

Interim / Fractional Customer Success Executive Leadership   [ Case Study ]

Looking for experienced Customer Success Executive leaderhip on a fractional or interim basis?  Click here for a list of the firms that provide such services..

The Success League* The Success League *     [ Case Study ]

The Success League is a global consulting and training firm focused on developing customer success programs that drive revenue. Since 2015, we have helped hundreds of companies improve their customer experience, and thousands of CS professionals build their careers.  One of our team of experienced customer success leaders can step in as a fractional leader if you:

      • Need to Fill a Leadership Gap
      • Have a Leader Who Needs Help
      • Want to Structure Your CS Program Pre-Hire

* Snowise Technologies *

Snowise TechnologiesWho We Are:  Snowise Technologies is a boutique customer success firm founded by Stephen Wise, a veteran CS leader with experience at GitHub, Chef Software, and early-stage DevOps startups. We specialize in helping growth-stage companies build and scale modern Customer Success motions—without hiring a full-time headcount.

What We Offer:  Our fractional CS leadership services give your clients:

✅ A digital-first post-sales strategy tailored to their product and customers
✅ Executive-level guidance on onboarding, retention, and account growth
✅ Rapid playbook deployment, tooling setup, and health scoring frameworks
✅ Human-touch CS models that don’t require a team of 10 to run

Ideal For:

RevOps and CX consultants needing a trusted post-sale expert
VC firms and accelerators supporting early-stage portfolios
Fractional CFO/CTO partners who need a CS complement
SaaS and DevTools companies scaling from founder-led onboarding


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AB SaaS Impacts GmbH

Aspireship

Azzas Customer Care

Bandalier

Barlev Success

Batteries Included

Baton

Cebra Consulting

CloudTask

CSInTheValley

Customer Success Academy

Customer Success Architects

Dana Soza

Ellacott Consulting

Escalent

ESG

Everetics 

Growth Molecules™

GTM Advisors

KD McAlly Group

Klynk

KO Knows Consulting

Lewandowski Success Consulting   

MarketSource

MarketStar

Marley Wagner Consulting

NST Success Consulting 

Otis Alderley

RecastSuccess

Regalix

RetentionworCX

Ruffday Services

Service Excellence Partners 

ServiceSource

SGE Solutions

* Snowise Technologies *  (Consulting / Training / Fractional CS Leadership)

Success Calibrators    (Consulting / Interim Staffing)

Success Chain      (Consulting / Training / Interim Staffing)

SuccessEngine

Success To Scale  (Consulting / Training / Interim CS Leadership )

The Customer Success Company

* The Success League *     [ Case Study ]

Thornton Advisory Solutions   (Consulting / Training / Fractional CS Leadership [ Outsourcing)

UpgrAIde    (Training / Interim Staffing)

Wigmore IT Group

WMC Partners

Xperience Alchemy

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To Be listed

If you are a consultant, trainer, recruiter, or outsourcer offering services to the global customer success community, please download and fully complete the application form found on this link.  (There is no charge for a basic listing, which consists of your company name and a link to the appropriate page of your website.)

  [  Application for a free Listing in The Customer Success Resource Registry  ]