a/b-testing
(10)
Sherpa
Sherpa is a San Francisco startup building an AI agent that makes websites improve themselves. It installs with a single line of code, studies how visitors behave, generates on-brand variants of pages and flows, runs A/B tests on live traffic, and ships the winners - all without a designer, developer, or analyst in the loop. Founded in 2026 by ex-Lindy engineers Ethan Kinnan and Norbu Sonam and backed by Y Combinator (Spring 2026 / P26 batch), Sherpa also optimizes sites for AI agents, tuning agent-facing pages so that assistants recommend a company more often. Early customers report 15-35% lifts in their primary conversion metric within the first 30-60 days.
Product Genius
Product Genius is a Cambridge, Massachusetts AI company that builds a personalized, TikTok-style shopping feed for Shopify stores. Its platform, powered by what the company calls Large Interaction Models (LIMs), learns from each shopper's swipes, clicks and scrolls to assemble an individualized homepage of products, videos, reviews and Q&A. Founded by MIT PhD and deep-learning hardware pioneer Ben Vigoda, the company grew out of roughly $35 million in DARPA research and reports a median +20% lift in revenue per session, with controlled A/B tests showing a 36% average revenue lift across 25 brands including Betsey Johnson.
SamCart
SamCart is a SaaS checkout and direct-to-consumer selling platform built for digital creators, course sellers, coaches, and online entrepreneurs. Founded in 2014 by brothers Brian and Scott Moran, it turns a high-converting one-page checkout into a revenue engine with one-click upsells, order bumps, subscription recovery, and course hosting. Now repositioned as an AI-first 'digital business platform,' SamCart says it has helped 75,000+ sellers process billions in sales - focused on maximizing revenue per customer rather than simply driving more traffic.
Talkable
Talkable is a San Francisco-based B2B SaaS company that builds referral and loyalty marketing programs for e-commerce brands. Founded in 2010 as Curebit and backed by Y Combinator, the platform turns existing customers into marketers by rewarding them for referring friends. It offers referral tracking, incentive management, A/B testing, segmentation, fraud detection, and real-time analytics, and is used by 250+ retail and D2C brands including TOMS, Rothy's, L'Occitane and Alo Yoga.
JustAI
JustAI (formerly Just Words, legally Choice AI Inc.) is a San Francisco AI-native marketing platform that turns lifecycle content into an always-on experimentation engine. Its AI agents - strategy, creative, decisioning and data - predict high-value moments, generate on-brand message variants across email, SMS and push, test them against real users, and shift traffic to the winners while compounding learnings across campaigns. Founded in 2024 by Neha Mittal (ex-Twitter and Pinterest growth lead) and Jeff Hara, the company graduated from Y Combinator's Winter 2024 batch and works with consumer brands including Grammarly, ClickUp, Notion, Lemonade, Coursera and Thumbtack.
Replo
Replo is a San Francisco-based software company that lets ecommerce marketing teams design, launch, and test high-converting Shopify pages without writing code. Built around a visual drag-and-drop editor, hundreds of templates, live product-data integration, and increasingly AI-driven page generation, Replo targets mid-market direct-to-consumer brands that need custom landing pages and marketing funnels fast - without hiring engineers. Founded in 2021 by ex-Uber and PlanGrid engineers Yuxin Zhu and Noah Gilmore, the Y Combinator-backed startup has grown to thousands of ecommerce customers.
AB180 - 에이비일팔공
AB180 is a Seoul-based marketing technology company building an AI stack for full-funnel app and game growth. Its flagship product, Airbridge, is a people-based mobile measurement and attribution platform (MMP) that connects ad spend to real revenue across web, app, PC and CTV, with AI-driven predictive LTV, fraud protection and deep linking. Founded in 2015, AB180 serves 600+ apps and games in more than 30 countries.
PostHog
PostHog is an all-in-one, open-source developer platform that bundles product analytics, web analytics, session replay, feature flags, A/B testing, experiments, surveys, error tracking, a customer data platform, and a data warehouse into a single stack engineers can self-host or run in the cloud. Founded in 2020 by James Hawkins and Tim Glaser through Y Combinator, it lets product engineers track usage, ship features, and keep customer data in one place rather than stitching together a dozen SaaS tools. The company reached unicorn status in 2025 with a $75M Series E at a $1.4B valuation.
LaunchDarkly
LaunchDarkly is a feature management platform that lets software teams release, target, and measure code changes behind feature flags. Founded in 2014 in Oakland by Edith Harbaugh and John Kodumal, the company turned the homegrown 'if/else' toggle into an enterprise control plane used by more than 2,000 customers including Atlassian, IBM, Square, NBC, and Ryanair.
Uniform
Uniform is the composable, AI-powered digital experience platform that lets enterprise marketing and engineering teams orchestrate content, commerce, and personalization across every channel - without ripping out the systems they already own.