Top Tech Startups in California, US in 2027

Epia Neuro is a neural technology company developing intent-driven systems designed to restore function and independence for people living with neurological conditions. Its platform integrates implantable neural interfaces, adaptive algorithms, and assistive devices to translate neural intent into real-world action. The company’s initial focus is stroke-related motor impairment, with expansion in cognitive decline and other neurological disorders, focusing on long-term solutions for the growing aging population.

Sparcle builds AI that enterprises can run inside their own walls. Bolt is a desktop workspace for Windows, Mac and Linux. One hotkey opens search, files, notes, a browser and 80+ utilities that run on your machine with no model call. When Bolt's AI runs, it masks secrets and personal data before anything leaves the device. Bolt is free for individuals and needs no account. Aeira is self-hosted enterprise search that checks each person's permissions before a document can be retrieved, so AI answers only use what that person may see. Enterprise deployments run on your infrastructure, with your own models and keys. Every consequential action is recorded in a signed audit trail that an auditor can verify offline. We are a small founding team in Sunnyvale, California, working on privacy, security and trust for AI at work. Founded in 2025. Download Bolt: sparcle.app/download

We are building the next generation of AI-powered global supply chain technology. Our mission is simple: Help businesses operate smarter through AI, automation, and intelligent supply chain management. We are not just selling software. We are helping companies: 1.) Increase efficiency 2.) Reduce operational costs 3.) Improve customer satisfaction 4.) Scale globally 5.) Enter the AI-powered business era

Pylon is the modern alternative to Zendesk, optimized for B2B. We bring together everything a post-sales teams team needs including a ticketing system, B2B omnichannel integrations (Slack Connect, Microsoft Teams), modern chat widget, knowledge base, AI support bot, account management, customer marketing, and more.

From a simple brief to live, high-performing content, all in one place. The creative work AI has automated is now a common foundation, and building your own version of it earns you nothing the studio next door does not also have. Adopt the harness instead, and spend your team's time on the part that differentiates.

CatchBack is a trading card platform that combines the excitement of pack opening with technological tooling. You purchase digital packs, open them to reveal cards backed by physical cards stored in our secure vault. You can trade, sell, or request physical delivery of your cards at any time. Users can also create custom packs where they pick their exact hits and odds, and buy and sell cards in our marketplace with just a $1 charge for completed sales.