B2B Software and Services Startups funded by Y Combinator (YC) in Los Angeles 2026

Every month, our robots greet tens of thousands of Americans with a smile. They answer questions, upsell customers, and can be trained just like a human employee.

Endstack is a desktop OS optimized for humans and agents running in the cloud. Your desktop is powered by endOS, giving you a real desktop workspace in the browser backed by Linux in the cloud. Files, notes, browser tabs, native apps, terminals, and all your agents in one beautiful, familiar, interface. You get a powerful agent running 24/7, integrated at the system level into endOS that you can also reach via Slack, email, or SMS. Endstack desktops are also natively multiplayer, allowing for realtime collaboration with teammates.

Voker is the Agent Analytics Platform for monitoring and improving your AI agents. Companies like Dutch.com use our SDK to build better agents. Alex and Tyler met at a high-growth E-Commerce startup where Tyler was running Technology & Data. Together, they built AI products that bootstrapped the company profitably to $100MM in Revenue.

Merlin is an AI-powered ERP for construction companies. We provide construction companies with a single, AI-powered platform to manage their entire business operations. Our platform unifies project management, materials management, finance, estimating, and CRM—traditionally scattered across multiple systems—into one cohesive solution. For the first time, construction firms can automate and oversee every aspect of their projects in a single, intuitive system. Today, construction companies pay for 8-17 different tools - that we eliminate the need for. We reduce - Manual work by 60% - Cut software costs by $10,000 monthly - Complete projects 3x faster. Why Now? We're witnessing a perfect storm of factors: decades of stagnation in traditional ERP systems, a multi-billion-dollar industry built on misaligned incentives, and the transformative potential of AI. This confluence creates a rare cyclical opportunity for market upheaval. The last major shift in this space occurred in the 1990s with the advent of digital systems, and now, 30 years later, we're on the cusp of another seismic change. Customers are crying out for innovation and as AI reshapes the landscape, early customer signals indicate an eagerness for smarter, more efficient systems. It's a unique window of opportunity that opens perhaps once in a multi-decade chance to redefine an entire industry's operational backbone. Team: KS, a BITS Pilani grad and successful startup co-founder, and Ayantika, an IIT alumni and tech expert, bring extensive coding and product development expertise together bringing about over a decade of technical expertise. Sneha ( that’s me), with over a decade of experience in supply chain management and lean manufacturing within the construction industry, has lived the pain of using ERPs in this industry.

You closed your first few deals on handshakes and Stripe links. Now a customer wants a ramp-up, custom terms, or annual billing — and suddenly you're duct-taping spreadsheets to your CRM. Most CPQ tools are built for 500-person sales orgs with a dedicated RevOps team. Veles is built for you. AI agents handle quoting, approvals, and deal docs end-to-end so you can run a real sales motion without hiring a deal desk. It's free for founders just getting started, and pricing scales with the number of active contracts you manage — so we only grow when you do. No CRM consultant, no six-month rollout. Just connect Salesforce or HubSpot and start closing.

Oversteer is building browser agents to automate web tasks and turn them into reusable, deterministic APIs. You can integrate the API into any system and automate/integrate any website or portal.

Car washing is a $15B market in dire need of disruption. Legacy systems are costly, out of date, and inflexible. We are building modern solutions to help car wash operators manage and grow their business.

SpecCheck is an all-in-one solution that provides accurate prescription eyewear ordering and tracking, seamless billing, and streamlined communication between patients, eye doctors, and their lab partners. SpecCheck’s users work more efficiently and make fewer costly errors, increasing productivity and improving their overall workflow.

Dittofeed is an open-source alternative to platforms like Klaviyo and Customer.io. Self-host us for free, or use our low-cost cloud offering to automate messages across email, SMS, mobile push, WhatsApp, and more. We also offer solutions for embedding Dittofeed in your own SaaS! Instantly provide your customers with automated messaging tools.

Backed by a16z and YC, Metal offers super intelligence for fundraising. Our platform brings deep intelligence for core fundraising workflows (from identifying investors and researching / qualifying the "most likely" firms to relationship intelligence and managing the process).

Pirros is reshaping and revolutionizing how Architecture and Engineering firms manage design details. Our software empowers AECO design professionals (Architects, Engineers, Contractors, and Owners) to streamline their detail management process more effectively, reduce errors, and speed up project delivery. We’re building the system of record for detail management in a $12T+ industry that’s been underserved by technology for too long! About Us Backed by top-tier investors and angels (YC, Funders Club, PlanGrid, Elephant) - We closed our Series A of ~$17 million in 2025 - PROFITABLE, ~$6M ARR and growing revenue at +10% month-over-month - 300+ firms using us today, growing 10% MoM, 120% NRR - Co-founders both come from structural Engineering, so we have industry experience!

Stackup is transforming how businesses manage their on-chain operations by offering a smart account platform designed to simplify and automate complex blockchain tasks. As the need for seamless, secure, and efficient crypto transactions grows, Stackup provides centralized control over decentralized assets, allowing businesses to take charge of every detail of their operations with ease. Our platform integrates advanced security and adaptive features to eliminate the chaos of traditional crypto wallets, empowering businesses to manage their crypto stack in real-time. Whether you’re orchestrating large-scale transactions or ensuring complete transparency, Stackup’s solution brings order and precision to blockchain management—turning crypto chaos into structured, seamless business flow.

TeamOut is a retreat platform for team managers. We offer easy-to-book venues for team retreats. Managers spend months planning for a retreat. We help them do it in just a few days. How? We offer 20+ bedroom private places with robust Wifi that companies can book in a few clicks. This is an incredibly exciting time to meet with your team again, build memorable experiences that your team will remember forever.

Cinapse is reimagining the production schedule: the foundation of every film and TV project. We’re building the OS of Hollywood, starting with the tool that filmmakers use every day. Besides the script, nothing is more foundational to filmmaking. There’s no accurate budget without a schedule. No execution plan without one. The schedule is the map that takes us from idea to image. Cinapse helps filmmakers draw that map better, faster, and together.

Auto parts retailers get product data from hundreds of manufacturers that is inaccurate and inconsistent, often with big gaps in key values. They currently have a team of "catalog managers" who are required to process and enhance this data line by line, resulting in a week to months long lag between receiving product data and actually being able to start generating revenue from those products. Versable leverages AI to scan the web for tens of millions of auto parts listings, and uses a fine-tuned LLM with RAG to instantly process, enhance, and transform data. With just a part number, Versable is able to generate market-ready titles, product descriptions, and specs, in any format that's needed.

Massdriver helps engineering and operations teams build secure, production-ready internal developer platforms in minutes. With over 50+ infrastructure components engineering teams can build golden paths quickly on Kubernetes, serverless, or VMs. Get the flexibility product engineers need, with the auditing and security operations teams’ demand. We handle all the boring parts of cloud operations like IAM, secrets, continuous deployment, alerting, and monitoring so your team can focus on the product. Massdriver supports anti-lockin, by running in your cloud, and open-sourcing all of our infrastructure components.

Plai makes it easy to create, launch, and optimize ads with AI doing the heavy lifting. Brands use Plai across Facebook, Google, LinkedIn, and TikTok. Trusted across 100,000+ campaigns and 5B+ ad impressions.

Epsilon3 is the AI-Powered ERP, MES, and Test Management Software for Complex Engineering, Manufacturing, & Operations. We are a growing team of engineers from SpaceX, NASA, Google, and Stanford with unique experience planning and executing over 100 space missions. We are applying what we learned to develop web-based solutions that make building and operating advanced systems as efficient, error-free, and enjoyable as possible. Want to join a fully remote, US-based SaaS startup on a mission to solve complex problems in aerospace, energy, defense, maritime, and biotech? Apply today!

AI Tech Packs turns images into production-ready tech packs within minutes. We allow fashion brands to save hundreds of hours and thousands of dollars otherwise spent creating manual tech packs — which typically cost $100–$500 per style and take days or even weeks to complete.

Laylo powers drops for the world’s biggest musicians and events. The platform combines landing pages, messaging, link tracking, and more to drive sales and streams around the most important moments in entertainment.

Choosing the right tool for your tech stack is a soul-sucking exercise — countless hours in demos, endless spreadsheets, and the risk of a wrong choice. At Taloflow, our mission is to make technology selection effortless and low-risk for IT and software teams. Taloflow is backed by Y Combinator, YC Continuity, Wonder Ventures, Plug and Play Ventures, and Voyager Capital.

LogisticsOS provides route optimization and fleet dispatching algorithms as services to let any last-mile company offer same-day and next-hour delivery. We are the creators of the route optimization engine that both FedEx and USPS are using on production today. We increase profit per delivery by 15% and optimize thousands of deliveries in seconds using 30X faster algorithms.

Hellometer helps fast food owners' grow same store sales using security cameras to improve customer wait times. Speed of service is fast food's core value proposition (it’s literally in the name) and owners currently don't have a reliable way to measure it. We show them when and where they have slowdowns and for every 7s they improve service times, owners see 1% increase in revenue.

Paragon enables companies to build products that integrate with the SaaS ecosystem. With Paragon, software companies can integrate with hundreds of different SaaS apps in minutes while providing their customers with a seamless, unified integration experience

Oda is an AI agent for home design. Homebuyers and renters alike can use Oda to discover their interior design preferences, apply those preferences to their new home, and then find the best furniture, décor, and appliances aggregated from many different online retailers. Oda distributes its product to homebuyers and renters through partnerships with real estate companies and platforms. Real estate partners add Oda AI iFrames to their websites to showcase listed homes with AI-generated designs. Each AI iFrame is directly linked to an Oda board, allowing consumers to transition from an iFrame to Oda to further personalize the designs and create their dream home.

Release delivers staging environments as a service. With Release a staging environment is automatically generated with every Pull Request which removes the bottleneck most companies have when they only have a single staging environment.

*S19 and YCG F21* Engineering teams shouldn’t be in the dark when it comes to the performance of their mobile apps and user experiences. With our industry-leading mobile observability technology, Embrace aims to give SRE and DevOps teams better insight into what matters most – their users – by tying mobile performance data to backend observability insights. As the only user-focused, mobile-first observability solution built on OpenTelemetry, Embrace delivers crucial insights across both DevOps and mobile teams to illuminate real customer impact – not just server impact – to deliver the best app experiences. Customers like The New York Times, Marriott, Warby Parker, Masterclass, Home Depot, and Cameo love Embrace’s mobile observability platform because it makes extremely complicated and voluminous data actionable.

Plotdrive is the first continuous production system for narrative — infrastructure that transforms how long-form stories move from imagination to completion. Most books don’t fail for lack of talent; they fail when the workflow collapses somewhere between page 80 and page 300. Founded by brothers with backgrounds in high-stakes poker, VR, and narrative systems, we built what we couldn’t find: an engine that holds the entire shape of a story while authors work inside it. Writers see 5-10× gains in throughput without losing their voice. Manuscripts that sat untouched for years finally reach the finish line. Authors are using Plotdrive to break decade-long blocks. Publishers are using it to rethink how story pipelines should operate when continuity, context, and editorial craft can finally scale. The printing press made distribution industrial. We’re making completion industrial — creating the foundational layer for how narrative gets made at scale.

BlueCargo is building the automated solution for complex freight transactions. We envision a world where BlueCargo manages all financial transactions between logistics businesses, so they can focus on moving cargo. We help global shippers optimize their supply chain with accurate and automated financial and operational audits, and a tech first user experience. Our startup was founded by two female entrepreneurs, graduated from Y Combinator (2018 batch), and has raised a 4 million seed round followed by a $11m Series A. The company has two offices located in Los Angeles and New York. We are at the beginning of an exciting growth phase where we have already developed product-market fit, a working platform, and hundreds of daily active users. We are looking for a Senior Software Engineers to grow the team and deliver a product to bring us to the next level. If working to bring technology to the logistics industry sounds exciting, then we’d like to connect with you! We are looking for a highly experienced professional who has created several full stack web applications and has experience with AWS.

Flowspace couples powerful software with its national fulfillment network to enable brands to offer consistently fast, efficient delivery from every channel. Integrated within a network of +130 fulfillment locations nationwide, OmniFlow software offers an ecommerce command center for brand operators, empowering them with the visibility and insights needed to control operations and drive success.

Mobile-First CMMS/Enterprise Asset Management System UpKeep is asset and maintenance management — done the right way. We take a mobile-first approach to the traditional desktop-based enterprise software. We keep technicians out in the field working on the most pressing issues — saving precious time and money. Tracking the costs of assets over their lifetime is now easier than ever. We keep businesses more efficient and streamline their workflow by eliminating paper work orders. We currently have over 2,000,000 registered users from small businesses to large enterprises. We offer low-cost solutions with transparent pricing to a common problem that many companies face. Our vision is to provide the best mobile solution for asset and work order management in a space that is dominated by traditional enterprise software companies. We've raised a total of $50 million from Y Combinator, Battery Ventures, Bain Capital, Emergence Capital, and Insight Partners. -Assign work orders -Create and save tasks -UPC Label scanning -Create assets and assign work orders to assets -Preview for analytical graphs We are a Y Combinator-backed company (YC W17)

Gigwell is building the future of event bookings. Our platform is trusted by over 100,000 touring artists and venues using Gigwell to streamline the booking process - from managing offers and booking requests to handling electronic contracts and online payments. We have facilitated over $5B in gigs on our platform, in verticals ranging from DJs & Musicians to Public Speakers and Comedians. Leveraging a network of thousands of industry professionals and talent buyers, Gigwell is hyper-tailored to the workflow of a $200B industry that still operates on Excel spreadsheets and Word documents. Gigwell is the first integrated, vertical SaaS platform that integrates end-to-end workflow automation for artists, booking, and management agencies. We provide a simple solution for managing artist logistics, collecting and tracking payments electronically, negotiating contracts and talent availabilities, and monitoring revenue goals. We have been featured in TechCrunch, Billboard, DJ Mag, Mixmag, Hypebot, DJ Times, and Magnetic Magazine, and awarded the most promising startup from Nitey Awards and SF MusicTech’s StartUp Innovators Challenge.

Asseta is an online marketplace for used capital equipment and parts. We utilize innovative software to bring buyers and sellers together so you can efficiently and transparently collaborate during equipment transactions. Our web based platform ensures easy price discovery for interested parties and high touch customer service. Today over $100B is spent on used manufacturing equipment offline via brokers and middlemen. This huge but un-sexy market has yet to be transformed by technology. The incumbent firms rely on large sales forces and the fragmentation of the market to charge huge margins. We believe in a better solution. Founded in 2013, Asseta is Y Combinator backed startup based in Newport Beach. For more information, visit www.asseta.com. Check out our AngelLilst profile here: https://angel.co/asseta?ref=startup_card

inDinero is on a mission to reinvent small business operations, helping our clients understand their finances like never before. By combining a full finance team of bookkeepers, accountants, and CPA’s, with real time accounting software, we provide startups and small businesses the knowledge they need to understand their company's financial health and make better decisions with their money. Tax experts work with accountants under one roof to prepare and file our clients'​ taxes and maximize tax savings. We're a growing company with big ambitions and big opportunities for internal mobility. If you’re interested in one of our open positions and looking for your next big professional adventure, drop us a line at jobs@indinero.com.

Warrant is an open source authorization service that helps developers implement and enforce access control in their applications. Warrant serves as a dedicated, centralized platform for handling user authorization and access control so engineering teams can focus on building their core products.

Stacksi helps companies automate the process of answering enterprise security questionnaires so they can close deals faster and save their best engineers’ time for more strategic projects. Salespeople, CTOs, and CEOs of fast-growing enterprise startups can upload security questionnaires into our system. If the company already has written security policies, they can upload those documents, too. From there, Stacksi parses their documents, identifies gaps in their security policies vs. standards, and helps them establish a successful security program. Ultimately, we will help them 1) automate completion of security questionnaires, 2) quickly get through enterprise security audits and 3) improve their security posture.

Emerge is a suite of developer tools designed to supercharge mobile apps and the teams that build them. Our tooling is already used by many of the best mobile teams in the world like DoorDash, Square, Airbnb, Duolingo, Stripe, among others. Come help us make it even better!

WorkClout is enabling industrial labor to perform to their highest potential. WorkClout is a tool that helps industrial Operations & HR Teams make better decisions to improve production efficiency. WorkClout's SaaS tool centralizes on-the-job employee training, troubleshooting, safety/quality procedures, knowledge building, and performance tracking.

Polymail is an email platform for sales communication. Our platform - which includes email tracking, Salesforce sync, and calendar scheduling - empowers sales teams to increase conversion and shorten sales cycles while providing executives with transparency into sales activity. Backed by Y Combinator and based in Los Angeles, Polymail has helped thousands of customers transform their sales communication processes. For more information visit http://polymail.io

Lumi.com provides packaging and shipping supplies to online brands, from small businesses to leading ecommerce companies shipping millions of orders per month.

PipelineDB is an open-source PostgreSQL extension that enables realtime reporting use cases by continuously aggregating large streams of time series data down into summary data. It shines the most at larger scales, where storing lots of raw time-series data and aggregating it over and over again becomes inefficient. The amount of value that PipelineDB adds is directly proportional to the amount of continuous aggregation that an analytics use case can benefit from. PipelineDB should be used for analytics use cases that only require summary data, like realtime reporting dashboards. PipelineDB is not a good fit for exploratory analytics on siloed datasets.

140Fire is the fastest growing online video ad network. Brands and agencies utilize 140Fire for it's suite of engagement and data tools which make media buying 10x more effective when it comes to running video ads. Backed by Y Combinator, Mark Cuban, Jonathan Kraft and Skip Paul, 140Fire is based in Santa Monica and has 15 employees.

Google AdWords for music. Allowing bands and labels to bid for airtime and have their music streamed to qualified audience.

Flutter is recreating the magic of seeing someone in real-life for the first time, on your phone. Flutter lets you record short, ephemeral videos to express yourself and capture the attention of potential matches nearby. Users browse through nearby videos and, just like Tinder, like or pass on each one before moving on to the next. Here’s the catch: to actually match with someone, you have to be on the app at the same time and look into each other’s eyes for 15 seconds to see if there’s a spark. We help users play this game by sending push notifications when people they like are online. Video is so powerful. We've seen this with YouTube, Snapchat, Meerkat. And 15 seconds of live, two-way video can tell you so much more about a person than hand-picked photos and bios.