Functionize is a San Francisco-based AI test automation company building an agentic platform that lets enterprise QA teams design, run, and maintain software tests in natural language. Founded by Tamas Cser in 2014, the company uses machine learning and computer vision to slash test maintenance and accelerate releases for Fortune 500 customers.
Rainforest QA is an AI-powered, no-code software testing platform that helps product teams run regression and functional tests without building or maintaining brittle test frameworks. Founded in 2012 in San Francisco and backed by Y Combinator, the company has executed more than 42 million tests for over 10,000 startups and product teams.
Testlio is an AI-powered, fused software testing company that blends a global crowd of vetted human testers with automation and AI to help product teams ship software customers can trust. Born from a frustrated QA tester's hackathon idea, the company now runs end-to-end testing for brands including Microsoft, Netflix, PayPal, SAP and the NBA.
Summer Weisberg is the CEO of Testlio, an AI-powered managed crowdsourced testing platform headquartered in Palo Alto, California. Appointed to the role in February 2026 after serving as COO and Interim CEO, she brings over 15 years of experience spanning software engineering, enterprise testing, professional services, and customer success. Before Testlio, she held senior roles at CloudBees, CA Technologies, FedEx, and Silicon Graphics. An advocate for diversity in tech and a sharp critic of AI-for-AI's-sake, she champions human judgment in quality engineering - insisting that AI without a solid quality foundation just makes mistakes faster.