ScaleUp Competitors

Y Combinator is the leading startup accelerator for entrepreneurs. Since 2005, YC has invested in over 5,400 companies, including Airbnb, Dropbox, Stripe, Reddit, Instacart, DoorDash, and Coinbase. Today, YC has built the most powerful startup community in the world alongside the products and programs to support founders for the life of their company.

LaunchDarkly is the runtime control layer for the AI era. For over a decade we have helped engineering teams control what ships in production, starting with feature management and evolving into the infrastructure that governs how software and AI agents behave after deploy. With CodeControl and AgentControl, teams can update agent behavior in milliseconds, automatically roll back when something drifts, and govern every agent and feature across the organization from one place. No redeploys required. LaunchDarkly processes more than 50 trillion flag evaluations per day and serves some of the most demanding engineering teams in the world, including over a quarter of the Fortune 500. Founded in 2014 in Oakland, California by Edith Harbaugh and John Kodumal, LaunchDarkly has been named to the Forbes Cloud 100 for five consecutive years, Fast Company's Most Innovative Companies list, and the Inc. 5000.

SeedLegals is where startups and small businesses get their legal work done and their funding over the line. We handle the documents and admin that slow founders down – from contracts and cap tables to funding rounds and share option schemes. By automating repeatable legal work, SeedLegals helps companies move faster and spend thousands less on traditional lawyers and accountants. For founders starting a company in the US, SeedLegals handles the process of forming a Delaware C-Corp. Founders with an existing US LLC can also convert it into the investor-ready structure typically needed to raise venture capital. For founders raising investment, our funding tools cover everything from one-off SEIS/EIS investments and top-ups to full funding rounds. Founders can prepare documents, manage investors and move their raise forward in one place. SeedLegals also makes it easy for investors to create, sign and store investment documents, manage portfolios, model exit scenarios, get SEIS/EIS tax relief compliance documentation sorted and store everything in one place. SeedLegals operates in the UK, US, France and Ireland, with offices in London, New York and Paris. Key facts: 📈 60,000+ startups, SMEs and investors use SeedLegals 💰 £3 billion+ raised on SeedLegals 🏆 UK's number 1 platform for funding rounds 📊 UK's number 1 platform for cap table management 🎯 UK's number 1 platform for EMI option schemes 🏢 Handles company incorporation and US LLC to C-Corp conversion 👥 130+ employees 🚩 Founded in 2016 📍 Headquartered in London, England SeedLegals was awarded Outstanding Customer Service and Product Excellence by Gartner Digital Markets in 2025.