Top 38 SaaS Companies in Los Altos, United States, May 2026

Los Altos, California, United States

Fast Simon brings integrated AI conversion optimization to automate manual work and replace expensive, complicated, long implementations by point vendors. Designed from the ground up for automation & self-service, Fast Simon delivers AI-Search, Collection filters, Merchandising, Personalization, Similar Styles, and Complete-the-Look to increase merchants’ conversion rate and AOV. Our integrated platform not only replaces point solutions, but also delivers a superior experience due to the number of data streams fed into its AI engine. Fast Simon uses shopper behavior signals, store signals, and merchant policies to deliver personalized search, collections, upsell, cross-sell, ad-platforms, data feeds, and campaigns. Fast Simon, Inc. is an independent US corporation based in Silicon Valley, California.

Los Altos, California, United States

Introducing the first complete FP&A solution that uses probability science and risk-derived planning to give actionable insights and recommendations. Say hello to the only FP&A platform that turns your data and financial model into real business value. Finally, your team gets the fully-fledged FP&A system they deserve, complete with real-time data sync, forecasts, scenario management, robust models, and more. All at scale. You’ll also benefit from our extensive reporting capabilities, which offer a complete snapshot of your business performance, from high-level views to the most granular drill-downs. But we’re so much more than just the technology we bring to the table. Trusted by some of the biggest and fastest-growing names in the world like Lattice, HiBob, Claroty, GlassBox, we’re game-changers on a mission to change the world of FP&A. And that’s because of our team. We’re a group of seasoned techies and experienced CFOs working to reinvent FP&A with the technology it deserves. Because all companies need a better, science-backed way to grow. And that’s the fintastic difference.

Los Altos, California, United States

Developer of an Application Performance Acceleration technology designed to activate data set I/O. The company's software puts primary I/O on an SSD cache in the server to achieve performance acceleration equivalent to all flash arrays which works without replacing existing spindle based storage, enabling enterprises to move computer to the cloud, while keeping storage secure in their data center.

Los Altos, California, United States

Antaris is the world's first platform that dramatically simplifies the design, simulation, and operation of satellite constellations. It offers seamless, end-to-end solutions designed to simplify every step of the journey from initial design to operation.

Los Altos, CA, United States

FunnelStory is a Revenue Platform for Sales and Customer Success teams. Our Time-traveling AI turns your product usage data into revenue gold. B2B Sales have been transformed in the last decade. Still, revenue intelligence infrastructure in most B2B companies lacks product usage-based intent data, which is crucial for self-serve trials, digital customer success, and customer lifecycle marketing use cases. In a few cases where it does exist partially, it is often painfully excruciating, time-consuming engineering work that an organization requires to make it a reality. For example, in the field of customer success tools that rely on product usage, conversation, and support data, an average implementation requires 3-6 months of effort and breaks down like a house of cards on product feature updates. Consequently, B2B firms struggle to scale self-serve trials and digital customer success and that causes wasted efforts on bad opportunities, incorrect sales forecasts, and missed revenue opportunities (conversion, expansion, upsell) FunnelStory is the solution to this problem. FunnelStory's time-traveling AI scours data - actions, whispers, even tickets - to learn what makes best customers thrive. It then crafts flawless funnels, nudges accounts toward success and signals sales when accounts are primed to grow. FunnelStory has been adopted by forward-looking and high-growth companies, many of which have been mentioned in the LightSpeed Cyber60 report for 2023. You can learn more at www.funnelstory.ai

Los Altos, California, United States

Accelerate your sales with BSPK, the premiere clienteling tool for salespeople. In the best personal shopping experiences, brands make the customer at the center of the dialogue and deliver offers that are targeted uniquely to them. To ensure a connected and engaging customer experience, empower your salespeople, and leverage data to create one-to-one personalization that will turn customers into brand evangelists. At BSPK, we want to inspire a much more connected and frictionless shopping experience with the customer at the center. BSPK is the only global solution in clienteling, providing salespeople with the tools they need to sell in today’s digital retail landscape.

Los Altos, California, United States

AMODIT is an innovative workflow system, which learns from users and models processes automatically. It implements patent-pending method of adaptive workflow modeling. Using artificial intelligence it predicts user's behavior. Avoiding costly pre-deployment analysis greatly reduces costs of deployment and minimizes maintenance costs.

Los Altos, California, United States

Napkin empowers anyone to communicate their ideas visually. With Napkin, you can transform written content into customizable visuals that can be used across Google Docs, Slides, Canva, Slack, Word, PowerPoint, Email, Text, and more. Founded by Pramod Sharma and Jerome Scholler, the creators of AI gaming company Osmo, Napkin emerged from their frustration with lengthy documents and lackluster presentations despite making learning fun for millions of kids. Experiencing firsthand the power of compelling visuals, they founded Napkin to make it easy for anyone to level-up their business communication through compelling visual storytelling. Try it out at napkin.ai

Los Altos, California, United States

The world's largest Business Knowledge Graph enabling you to - Find companies to do business with - Learn everything about them - In seconds

Los Altos, California, United States

4iQ and Alto Analytics have joined to become Constella Intelligence. Visit constellaintelligence.com to learn more. Constella Intelligence is a leading global Digital Risk Protection business that works in partnership with some of the world’s largest organizations to safeguard what matters most and defeat digital risk. Its solutions are broad, collaborative and scalable, powered by a unique combination of proprietary data, technology and human expertise—including the largest breach data collection on the planet, with over 100 billion attributes and 45 billion curated identity records spanning 125 countries and 53 languages.