Y Combinator
AcceleratorGlobal (US-based)World's most successful startup accelerator. Invests $500K in select batches 4x/year. Portfolio includes Airbnb, Stripe, OpenAI, Coinbase.
Sequoia Capital
Venture CapitalGlobalLegendary VC backing YouTube, Airbnb, Stripe, WhatsApp. Arc program for pre-seed/seed founders with mentorship and network access.
Andreessen Horowitz (a16z)
Venture CapitalGlobal (US-based)Speedrun program offers up to $1M for new startups. 150+ companies funded. Full operator support for talent, GTM, recruiting.
First Round Capital
Venture CapitalUSSeed-stage specialist. Backed Notion, Roblox, Uber, Square. Works closely with founders in earliest years.
General Catalyst
Venture CapitalGlobal$43B+ AUM, 800+ portfolio companies. Multi-stage with seed, growth, and creation services. Focus on AI, health, fintech.
Techstars
AcceleratorGlobal25+ accelerator programs globally (London, NYC, Berlin, Tokyo, etc.). 3-month program with mentorship and funding.
500 Global
AcceleratorGlobalFormerly 500 Startups. Global accelerator with programs in US, LatAm, MENA, Asia. Rolling applications.
Index Ventures
Venture CapitalEurope, USEuropean roots, global presence. Backed Revolut, Roblox, Dropbox, Figma. London, SF, NYC offices.
Balderton Capital
Venture CapitalEuropeEurope's leading VC focused exclusively on European-founded tech. Portfolio: Revolut, GoCardless, Darktrace, Contentful.
Antler
Accelerator / VCEurope, Asia, GlobalOperates in 7 European locations. Supports pre-seed to pre-idea stage. Helps founders find co-founders and validate ideas.
2048 Ventures
Venture CapitalUSPre-seed and Seed specialist. $500K–$3M checks. Focus on Vertical AI, Deep Tech, Health, Bio. NYC & Boston.
M13
Venture CapitalUSSeed and Series A. Full-stack partner with operators to help founders scale. Focus on disruptive software.
Accel
Venture CapitalEurope, USGlobal VC. Early backer of Facebook, Spotify, Slack, Dropbox. London and Palo Alto. Seed to growth.