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Get in touch with your favorite YC companies and founders

^*YCRM is not affiliated with Y Combinator

Companies

A list of all YC companies and their contact information.

Name	About	Emails
Reach Labs S15	Long range, wireless energy distribution that scales	Sign-In An account is required to download data from YCRM. Almost There! YCRM requires a one-time $30 payment to get access. What You Get Unlimited downloads for 30 days 5000+ YC founders' email, LinkedIn, and Twitter Access to the latest YC batches Access to all CRM data enhancements Get Access View Sample Payment Successful Congrats! You now have unlimited access to the YCRM database for 30 days. If you have any questions or run into issues, please don't hesitate to reach out. We are here to help.
SunFarmer S15	Reliable and affordable solar energy in developing countries.	Sign-In An account is required to download data from YCRM. Almost There! YCRM requires a one-time $30 payment to get access. What You Get Unlimited downloads for 30 days 5000+ YC founders' email, LinkedIn, and Twitter Access to the latest YC batches Access to all CRM data enhancements Get Access View Sample Payment Successful Congrats! You now have unlimited access to the YCRM database for 30 days. If you have any questions or run into issues, please don't hesitate to reach out. We are here to help.
Industrial Microbes W15	We design and build microbes to make chemicals greener at lower cost.	Sign-In An account is required to download data from YCRM. Almost There! YCRM requires a one-time $30 payment to get access. What You Get Unlimited downloads for 30 days 5000+ YC founders' email, LinkedIn, and Twitter Access to the latest YC batches Access to all CRM data enhancements Get Access View Sample Payment Successful Congrats! You now have unlimited access to the YCRM database for 30 days. If you have any questions or run into issues, please don't hesitate to reach out. We are here to help.
BuildScience W15	The operating system for commercial buildings.	Sign-In An account is required to download data from YCRM. Almost There! YCRM requires a one-time $30 payment to get access. What You Get Unlimited downloads for 30 days 5000+ YC founders' email, LinkedIn, and Twitter Access to the latest YC batches Access to all CRM data enhancements Get Access View Sample Payment Successful Congrats! You now have unlimited access to the YCRM database for 30 days. If you have any questions or run into issues, please don't hesitate to reach out. We are here to help.
Zeitview W15	Inspection software for renewable energy & sustainable infrastructure	Sign-In An account is required to download data from YCRM. Almost There! YCRM requires a one-time $30 payment to get access. What You Get Unlimited downloads for 30 days 5000+ YC founders' email, LinkedIn, and Twitter Access to the latest YC batches Access to all CRM data enhancements Get Access View Sample Payment Successful Congrats! You now have unlimited access to the YCRM database for 30 days. If you have any questions or run into issues, please don't hesitate to reach out. We are here to help.
Bright W15	Sunrun for the developing world	Sign-In An account is required to download data from YCRM. Almost There! YCRM requires a one-time $30 payment to get access. What You Get Unlimited downloads for 30 days 5000+ YC founders' email, LinkedIn, and Twitter Access to the latest YC batches Access to all CRM data enhancements Get Access View Sample Payment Successful Congrats! You now have unlimited access to the YCRM database for 30 days. If you have any questions or run into issues, please don't hesitate to reach out. We are here to help.
Helion Energy S14	Building the world's first fusion power plant	Sign-In An account is required to download data from YCRM. Almost There! YCRM requires a one-time $30 payment to get access. What You Get Unlimited downloads for 30 days 5000+ YC founders' email, LinkedIn, and Twitter Access to the latest YC batches Access to all CRM data enhancements Get Access View Sample Payment Successful Congrats! You now have unlimited access to the YCRM database for 30 days. If you have any questions or run into issues, please don't hesitate to reach out. We are here to help.
GBatteries W14	Enabling li-ion batteries to charge ultra fast without compromising…	Sign-In An account is required to download data from YCRM. Almost There! YCRM requires a one-time $30 payment to get access. What You Get Unlimited downloads for 30 days 5000+ YC founders' email, LinkedIn, and Twitter Access to the latest YC batches Access to all CRM data enhancements Get Access View Sample Payment Successful Congrats! You now have unlimited access to the YCRM database for 30 days. If you have any questions or run into issues, please don't hesitate to reach out. We are here to help.
Nuclear Software W25	GitLab for Hard Tech.	Sign-In An account is required to download data from YCRM. Almost There! YCRM requires a one-time $30 payment to get access. What You Get Unlimited downloads for 30 days 5000+ YC founders' email, LinkedIn, and Twitter Access to the latest YC batches Access to all CRM data enhancements Get Access View Sample Payment Successful Congrats! You now have unlimited access to the YCRM database for 30 days. If you have any questions or run into issues, please don't hesitate to reach out. We are here to help.
Astro W25	The world’s first AI energy developer	Sign-In An account is required to download data from YCRM. Almost There! YCRM requires a one-time $30 payment to get access. What You Get Unlimited downloads for 30 days 5000+ YC founders' email, LinkedIn, and Twitter Access to the latest YC batches Access to all CRM data enhancements Get Access View Sample Payment Successful Congrats! You now have unlimited access to the YCRM database for 30 days. If you have any questions or run into issues, please don't hesitate to reach out. We are here to help.

Data updated on 4/28/2025