Top Tech Startups in United States in 2026

Radixiy is an IT solutions provider headquartered in San Jose, California, United States, founded by technology leaders who spent 20+ years in the IT industry building software solutions for enterprise-level customers. We are innovators, problem-solvers, and trusted partners in digital transformation. With a passion for technology and a commitment to excellence, we specialize in building custom software solutions that help businesses thrive in an ever-changing digital world. Our team brings together expertise across industries, blending creativity with technical precision to deliver scalable, secure, and future-ready applications. From startups to enterprises, we collaborate closely with clients to understand their vision, tackle their unique challenges, and transform ideas into impactful solutions.

ResponsePro is a done-for-you SMS speed-to-lead and missed-call recovery platform for local service businesses. Contractors, roofers, HVAC companies, and landscapers lose jobs every day to slow response times and missed calls. ResponsePro fixes that automatically — texting new leads back in under 1 second and recovering missed calls via SMS, 24/7. We run fully compliant, production-ready infrastructure so our clients just get more jobs. No setup headaches. No technical lift on their end. We're an early-stage company growing fast and looking for hungry founding team members who want ground-floor residuals in a wide open market.

Tabbed is building a frictionless payments layer for hospitality that removes the most broken part of dining: closing the check. Tabbed connects diners and restaurants through a location-aware platform that automatically discovers checks, syncs directly with point-of-sale systems, and enables one-tap or fully automatic payment. No QR codes, no waiting for staff, and no disruption to existing restaurant workflows. For diners, Tabbed makes paying effortless. Open the app, dine as usual, and leave when ready—Tabbed handles the rest. For restaurants, Tabbed integrates directly into existing POS systems, ensuring checks are securely linked to guests and payments are captured reliably, even in fast-paced or high-volume environments. Under the hood, Tabbed solves complex coordination across location, payments, and POS systems to deliver a consistent, reliable experience across venues. The result is faster table turns, improved guest satisfaction, and a modern dining experience that feels seamless from start to finish. Tabbed’s goal is to become the default way people pay in hospitality—ambient, invisible, and trusted—while giving restaurants better insight into their guests and operations without changing how they work.

Effective AI is on a mission to transform the future of work by building AI that tackles complex knowledge tasks. Founded by Abhay Mitra (ex-CTO at Nirvana Insurance) and Kunal Singhal (ex-Meta, Grammarly, and Founding Engineer at Wisdom AI), we’re a small, passionate team based in San Francisco that thrives on collaboration, curiosity, and bold problem-solving. Our culture values ownership, continuous learning, and transparency, giving every team member a chance to make a meaningful impact from day one.

Sovi.AI is a forward-thinking AI technology platform dedicated to democratizing digital content creation. We build intuitive, AI-driven tools that allow users to produce high-quality videos and interactive media seamlessly across web and mobile ecosystems. Driven by continuous innovation, we are building a thriving creator economy that bridges cutting-edge technology with real-world applications. As we scale, we are actively looking for exceptional interns and talented creators to join our core team, bring fresh perspectives, and help us shape the next frontier of AI-driven media.