customer-success-software
(3)
ClientSuccess
ClientSuccess is betting that the most important sale begins after the contract is signed - when onboarding, product use, human judgment and renewal risk finally have to live in the same room.
Gainsight
Gainsight is a San Francisco-based enterprise software company that pioneered the customer success software category. Its platform helps B2B and SaaS companies retain customers, drive product adoption, and grow recurring revenue by unifying customer data, surfacing account health and churn risk, and orchestrating the post-sale journey. Founded in 2009 and led for over a decade by Nick Mehta, Gainsight serves more than 2,000 companies and, following its 2020 majority acquisition by Vista Equity Partners at a $1.1 billion valuation, has moved aggressively into human-first, agentic AI with products spanning customer success, product experience, communities, education, and its Staircase AI customer intelligence layer.
ChurnZero
ChurnZero is a customer success platform that helps subscription and B2B SaaS businesses reduce churn and grow revenue from existing customers. It unifies customer data, health scores, automation playbooks, and AI agents so customer success teams can spot risk early, drive product adoption, and manage renewals and expansion at scale. Founded in 2015 and based in Washington, D.C., it serves thousands of customer-facing teams and is consistently ranked among the top-rated customer success tools on G2.