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The Business-in-a-Box Built for People Who Hate Paperwork
Prime Corporate Services has turned the scattered chores of starting a company into one guided relationship. Its bet is simple: a live adviser can be more useful than another filing form.
Stable
Stable is an AI-powered virtual mailbox and business address service that turns the office mailroom into software. Founded in 2019 and part of Y Combinator's Winter 2020 batch, the company gives distributed and remote-first businesses a permanent U.S. address, scans and digitizes incoming physical mail, and automates downstream workflows like check deposits, registered agent filings, and routing. More than 15,000 businesses - from startups to enterprises like Gusto, Brex, and DoorDash - use Stable to handle mail from anywhere.
Sarah Ahmad
Sarah Ahmad is the CEO and co-founder of Stable, an AI-powered virtual address and mailbox platform that lets distributed companies run a real business from anywhere. Launched out of Y Combinator in early 2020, just as the pandemic emptied offices, Stable digitizes physical mail, handles registered-agent duties, and automates check deposits for more than 15,000 businesses, from day-one startups to S&P 500 names like DoorDash and Realty Income. A Northwestern engineer who sold custom MySpace layouts at age 10 and folded her first startup before founding her second, Ahmad leads with a blunt creed: listen obsessively, decide with confidence.
doola
doola is a New York-based fintech that helps entrepreneurs anywhere in the world start and run a U.S. business. Its 'Business-in-a-Box' platform bundles LLC and C-Corp formation, EIN registration, U.S. business banking access, bookkeeping, tax filing, compliance and e-commerce analytics into one back office, plus an AI Co-Founder. Founded in 2020 and backed by Y Combinator, doola has served 15,000+ founders across 175+ countries and is pushing agentic company formation directly into tools like ChatGPT, Claude, Replit, Lovable and Vercel.