Top Tech Startups in California, US in 2026

Kick Health helps smart, capable professionals overcome the fears that hold them back from being the very best versions of themselves. Our personalized telemedicine service offers easy access to sleep medicine and beta-blocker prescriptions, the insider's edge to blocking nervous symptoms like racing heartbeat, shaky hands, or trembly voice. Kick is partnered with leading experts from Stanford, Yale, and Harvard in psychiatry, medicine, and emotional fitness.

Give Lively is a tech company reimagining the future of nonprofit fundraising. Founded in 2015 on the belief that nonprofits, no matter their size, should not sacrifice their means to satisfy their missions, we build powerful and practical fundraising solutions that are free for nonprofits and intuitive for donors. Our dedicated and diverse team collaborates directly with nonprofits to develop tools that serve their needs and disburden them of for-profit fundraising software. Our free mobile-ready tech includes online appeals, event- and peer-based campaigns, donation by text, paying via digital wallets and much more. Nonprofits using Give Lively have raised more than $500 million for their critical work, saving $45+ million in tech fees and charges.

Botco.ai is a conversational AI platform built for healthcare and life sciences. We help enterprise teams deploy intelligent chat experiences that drive patient engagement, generate leads, and surface insights — all within a HIPAA-compliant infrastructure. We're a lean, remote-first team moving fast on hard problems. Botco.ai empowers businesses from a range of industries to deliver exceptional, trustworthy customer experiences that generate high quality pipeline, increase sales conversions, and accelerate revenue. Recipient of the Arizona Innovation Challenge "Most Outstanding Startup" award, best SaaS platform from the Arizona Commerce Authority (ACA), the TiE50 Award, and others, Botco.ai is transforming the way businesses communicate with their prospects and customers. For more information, visit botco.ai.

We are a tech consultancy, working with big fitness brands to design and build next-level fitness technology. We're entrepreneurs, having started 3 product-tech companies and 1 prior consultancy. We're ex-Silicon Valley and ex-Google. We're hands-on designers and product people who are passionate about the details and love creating epic product experiences. We are tri-coastal and nomadic -- living in inspiring places, traveling freely, and working with influential clients all over the world. Oh, and of course, we love working out. Join us to help build the next gen of epic fitness tech.

WindBorne Systems aims to deliver better weather forecasts built on a proprietary balloon-based atmospheric sensing platform. Their system can travel a quarter of the way around the world in a single flight and navigate to capture data with the highest impact, filling the huge gaps in traditional measurements. The company is backed by Khosla Ventures, and the team, led by a Thiel fellow and a Hertz fellow, was recognized by Forbes 30 under 30. They developed their world-record-breaking technology through four years of Stanford research, and are working to build the next generation of weather prediction with the mission of helping humanity adapt to the growing threat of climate change -- and the extreme weather that comes along with it.

Waste collection in the US is a 100 billion dollar industry that underpins the daily lives of every person and business. If successful, our software will simultaneously drive more sustainable waste processing practices and profitable economics for thousands of small and medium waste haulers, a win-win for planet Earth and SMBs.

Bold+Beyond is an agency that focus on brands rather than advertising, our core value is a mix of 50% strategy and 50% creativity. We are thrived to provide some of the most influential brands in the world from Fortune 500 companies (like L’Oréal, Lindt, Guerlain, Commerzbank, great agencies like Havas, Publicis, TBWA) to innovative startups (like HUM Nutrition, Clay AIR and Agnetix) with Business Consulting services and Creative Marketing Operations. Last year our clients raided more than $100M.

As an early pipeline tech talent accelerator, AOT creates equitable access to technology careers for 16-24-year-olds from historically excluded backgrounds who lack access to critical resources and opportunities. Since 2014, AOT has provided free, high-quality technology education and workforce readiness programs in New York City, Los Angeles, Miami, and Atlanta. Students gain in-demand skills in Web Development, Artificial Intelligence, UX Design, Product Management, Digital Marketing, Data Science, and Cybersecurity—paving pathways to higher education and careers in tech. To date, AOT has served over 5,300 students, facilitated more than 1,000 paid internships generating $4.1 million in wages, and distributed $2.4 million in stipends to remove financial barriers to participation. AOT alumni are twice as likely to attend college and five times more likely to pursue technology-related degrees compared to the national average. AOT partners with leading corporations, foundations, and community organizations to drive systemic change in tech education and workforce development. Recognized for its impact, AOT has been featured in Forbes, CNN, TechCrunch, The Huffington Post, BET, and other national media.

ReVolt Metals focuses on sustainable lithium recovery and processing, addressing the soaring demand for lithium in the green energy transition. With advanced electro-separation technology and DOE-licensed processes, we aim to recover lithium and other metals from Li-ion batteries, establishing a closed-loop, environmentally friendly metal recovery system. Our pilot line, planned for Silicon Valley, showcases our carbon-negative Li recovery process, winner of the R&D 100 Award in 2022. Join us on this journey to commercialize advanced technologies for metal recovery and contribute to a sustainable future.

Stealth mode hardware company backed by the world's best VC firms. Founded by Ex-Anduril leaders on a mission to save lives by creating the world's best interceptors