B2B Software and Services Startups funded by Y Combinator (YC) in Seattle 2024

May 2024

Browse 30 of the top B2B Software and Services startups funded by Y Combinator. Headquartered in Seattle, these are some of the hottest and fastest-growing startups.

We also have a Startup Directory where you can search through over 5,000 companies.

  • Mixpanel
    Mixpanel (s2009)Active • 410 employees • San Francisco, CA, USA
    Mixpanel is analytics for builders that need answers from their data at their fingertips. When everyone in the organization can see — and learn from — the impact of their work, they are poised to make better decisions. Companies like OpenAI, Netflix, Pinterest, sweetgreen, CNN, samsara, Uber, and Yelp use Mixpanel to understand their customers, measure progress, and endeavor to make better decisions.
  • Awtomic
    Awtomic (s2020)Active • 11 employees • Seattle, WA, USA
    Awtomic powers DTC brands with an easy-to-use subscription management and discovery platform. Starting with a Shopify app, we'll give merchants the subscription product power of premium subscription brands like Dollar Shave Club and Ipsy. As we grow our support for more eCommerce platforms and merchants, we'll help customers discover new brands through cross-sells and make it easier for them to manage their subscriptions in one place.
  • Latchel
    Latchel (w2019)Active • Seattle, WA, USA
    Latchel is the only end-to-end platform that automates maintenance coordination and delivers best in class resident amenities. We service over 80,000 homes across over 400 customers in all 50 states of the US. We’re growing rapidly and need a Product Designer to continue our rapid growth trajectory.
  • Theneo
    Theneo (w2022)Active • 15 employees • San Francisco, CA, USA
    Next-Gen API Documentation with AI Brilliance. Generate Stripe-like API docs in just a few seconds.
  • LunaSec
    LunaSec (s2019)Active • 4 employees • Seattle, WA, USA
    LunaTrace isn't just another security scanner that blasts you with vulnerabilities. LunaSec has developed a hosted Open Source dependency security tool that is smarter, faster, and quieter than any other. It's backed by a team of security experts who monitor the latest attacks, write remediation guides, and help you patch in hours instead of weeks. In under 2 minutes, for free, you can generate your own vulnerability report to gain insight into the security + compliance of your software by clicking here: https://lunatrace.lunasec.io/ Email us at: contact@lunasec.io Our GitHub: https://github.com/lunasec-io/lunasec
  • highlight.io
    highlight.io (w2023)Active • 8 employees • Irvine, CA, USA
    highlight.io is the open source, full-stack monitoring platform. With just a few lines of code, Highlight makes it easy to understand what's slowing down your users and swiftly address errors and regressions on your web app. Imagine that you have a customer reporting an issue on your web app. With highlight.io, you can playback their exact interactions to reproduce the bug and get notified of any future errors that could happen. That being said, we’re just getting started! We have plans to go way deeper into your observability stack to give you all of the visibility you need. Join us on this journey: - Star us on GitHub (https://github.com/highlight/highlight) to keep up with releases and news. - Join our Discord (https://highlight.io/community) to share product feedback and thoughts.
  • RescueTime
    RescueTime (w2008)Active • 15 employees • Seattle, WA, USA
    RescueTime helps you set boundaries, protect focused work time, and achieve work/life balance by shedding light on how you spend your time, improving your focus, and helping you find more time for the things that matter most. We are a distributed company with members spread throughout the United States.
  • Humanly
    Humanly (w2020)Active • 30 employees • Bellevue, WA, USA
    Our mission is to empower the world’s hiring teams to grow engaged, high-performing organizations - by delivering human connection at scale through innovative technology, commitment, and fairness. High-volume hiring is extremely broken - it is inefficient, ineffective, and biased. Our mission is to fix what is broken. We believe great hiring processes are centered around quality conversations between candidates and employers and a future where every candidate’s journey starts with a conversation - a future where candidates are considered without bias or archaic artifacts like resumes and cover letters.
  • Worklytics
    Worklytics (w2018)Active • 9 employees • Seattle, WA, USA
    Worklytics identifies leading drivers of employee engagement, without the need for repetitive surveys. It does this by passively analyzing anonymous collaboration data, in tools like Google Workspace and Slack, and detecting patterns that lead to greater employee satisfaction. Worklytics uses these insights to promote positive organizational change by proactively nudging leaders and managers.
  • Gordian Software
    Gordian Software (w2019)Active • 20 employees • Bellevue, WA, USA
    Our APIs enable the world's leading travel organizations to delight travelers and increase revenue. Our customers are companies like Priceline, Hopper and Trip.com, and we support over 140 airlines including partnerships with Lufthansa Group, United Airlines, and Singapore Airlines. Gordian has grown rapidly and serves more than 60 million passengers per month. Launched in 2017, Gordian is backed by Y Combinator, Accomplice, Vinyl, Kinnevik, DST Global Partners, Latitude, and Naval Ravikant. For more information, visit gordiansoftware.com
  • Cypher
    Cypher (w2022)Active • 10 employees • Palo Alto, CA, USA
    Stablecoins have enabled a new paradigm of companies and employees around that world that have raised capital in USDC and also pay their employees around the world in USDC. For these businesses and professionals, the financial stack for expenses management, payouts and accounting has new challenges and Cypher is solving this.
  • Dyspatch (w2014)Active • 20 employees • Victoria, BC, Canada
    Dyspatch by Sendwithus is a powerful communications platform built around advanced email content management. Our platform simplifies transactional email creation with a robust API, an easy to use editor, and built-in device testing, allowing for truly collaborative email strategy and execution. A centralized hub for email creation, approval, and publishing, our cloud-based solution empowers Product, Marketing, CRM, and Loyalty teams to efficiently build and test meaningful, dynamic communications without involving developers or deploying code. And with built-in support for 300+ locales, your teams can seamlessly manage localized content for global communications. Easily connect your cloud email provider or customize your integration to connect to your digital messaging service. Upload your existing templates in minutes. And from there, you’re well on your way to optimizing every email you send.
  • AeonCharge
    AeonCharge (w2022)Active • 16 employees • Seattle, WA, USA
    AeonCharge is building a roaming hub to connect every EV charger and electric vehicle on the road. We’re the largest aggregator in the country, with 76% market coverage and access to over 70,000 charging stations.
  • Shelf Engine
    Shelf Engine (s2018)Active • 40 employees • Seattle, WA, USA
    Shelf Engine helps businesses increase sales by accurately predicting the perfect amount of perishable goods to order, thus reducing food waste.
  • Intuned
    Intuned (s2022)Active • 4 employees • Kirkland, WA, USA
    Intuned is an AI enabled cloud platform to author, deploy, and monitor integrations to extract web data and execute browser automation. We enable engineers to build reliable integrations to access data and complete actions on other web services when official APIs are not available or complete.
  • Mason
    Mason (w2016)Active • 65 employees • Seattle, WA, USA
    Mason is the fastest way to take smart devices from idea to end user. Whether building a single-use device from scratch or scaling a line of smart products, with Mason it’s 20x faster and 10x less costly to build, deploy and scale. Digital transformation is a modern requirement but operating a hardware-dependent initiative is hard – thousands of hours and millions of dollars are at stake. The Mason Smart Device Platform is the only fully managed infrastructure for developing and delivering dedicated devices. It offers flexible usage-based pricing for fleets of devices and manages the underlying complexity of all associated backend services, making software delivery on a smart product line—whether it’s a tablet, wearable or new form factor—as simple as delivering software in the cloud. This frees innovators to focus on what matters: application development, feature specification and UX. Granular access to add, remove or lock down capabilities makes it possible for highly customized products to be built as envisioned. Mason offloads hardware investment risks and logistics, including inventory procurement, warehousing and supply chain management. With options like zero-touch provisioning, devices can work perfectly out of the box without end user intervention. Remote fleet management, troubleshooting and automated software updates by Mason ensure security and positive end user experiences. Organizations of all sizes rely on Mason to bring innovations and hundreds of use cases to market without reinventing the wheel. Smarter from start to finish with Mason.™ AWARDS * 2023: Best Places to Work & Best Startups to Work For, Built In Seattle * 2022: Best Places to Work & Best Small Places to Work, Built In Seattle * 2022: IoT Health & Wellness Innovation of the Year, IoT Breakthrough * 2022: Bronze Stevie® Award - Emerging Technology, The 2022 American Business Awards® * 2021: Deloitte Technology Fast 500™, Deloitte * 2019: Tech Impact Awards, Mobile - Silver, Seattle Business magazine Follow us on LinkedIn | https://www.linkedin.com/company/mason-america/
  • Oneloop
    Oneloop (s2022)Active • 2 employees • Seattle, WA, USA
    OneLoop finds relevant leads that are already interacting with your company, using data from product signups, website activity, and social interactions on places like LinkedIn and GitHub. We mix all this information to find and highlight the best-qualified prospects for you to sell to. We help PLG companies boost their revenue by finding enterprises already using their product and reach out to at the optimal time.
  • Chordio
    Chordio (s2022)Active • 2 employees • Issaquah, WA, USA
    Chordio is a generative product design assistant that transforms text descriptions into designs, helping product development teams remove design bottlenecks. For example, a product manager at a tech company uses Chordio to generate and evolve three options for a new feature concept, then iterate and align with the team on the design in a single workshop instead of over multiple sessions.
  • Watto AI
    Watto AI (s2023)Active • 3 employees
    Watto AI uses LLMs to generate McKinsey quality reports in seconds. Customers use us to generate anything from high-quality marketing reports, custom white papers to product documents and more.
  • Dagger
    Dagger (w2019)Active • 22 employees • San Francisco, CA, USA
    Dagger is a programmable CI/CD engine that runs your pipelines in containers. Develop your pipelines as code, in the same programming language as your application. Choose your SDK and start coding! Dagger executes your pipelines entirely as standard OCI containers. This has several benefits: - Instant local testing - Portability: the same pipeline can run on your local machine, a CI runner, a dedicated server, or any container hosting service. - Superior caching: every operation is cached by default, and caching works the same everywhere - Compatibility with the Docker ecosystem: if it runs in a container, you can add it to your pipeline. - Cross-language instrumentation: teams can use each other's tools without learning each other's language.
  • treble.ai
    treble.ai (s2019)Active • 38 employees • São Paulo, State of São Paulo, Brazil
    We help companies build and scale marketing campaigns through WhatsApp, reaching their customers anywhere in the world with engaging conversations. With our platform, businesses can create and send conversations massively to users and get analytics to improve their campaign performance over time, increasing conversion in every stage of the funnel.
  • Uberduck
    Uberduck (w2022)Active • 4 employees • Seattle, WA, USA
    Uberduck makes audio and video generation APIs and tools for product companies, brands, agencies, and musicians. Vocal samples and full songs produced by our text-to-speech, text-to-singing, text-to-rapping, lyric video generation, and voice conversion technologies power: - AI remixes and original songs for musicians ranging from hobbyists to the largest DJs in the world. - Personalized musical content in marketing campaigns. - A variety of music-related consumer experiences built on top of our APIs.
  • Strac
    Strac (w2022)Active • 6 employees • Bellevue, WA, USA
    Strac DLP (Data Loss Prevention) is an AI Company that eliminates data leaks from SaaS, Cloud, Endpoints and Generative AI apps by automatically detecting and remediating the most sensitive customer data like SSN, DL, Passport, Bank Statements, etc. across all communication channels like Office 365, Gmail, Slack, Onedrive, Google Drive, Zendesk, Salesforce, ChatGPT, Chrome, Jira, Web Applications, Mac, Endpoints, etc.
  • Nimbus
    Nimbus (w2021)Active • 3 employees • Seattle, WA, USA
    Our mission is to enable FANG-like observability for every organization in the world. We're starting with an optimization engine to reduce datadog costs by an order of magnitude without manual effort from developers.
  • Aurelian
    Aurelian (s2022)Active • 2 employees • Seattle, WA, USA
    Aurelian automates non-emergency calls to police departments. Our AI-powered operator instantly routes, triages, and resolves calls so citizens get exactly what they need and 9-1-1 dispatchers get to focus on emergencies. Upwards of 80% of total call volume faced by public safety agencies are administrative calls e.g., citizens trying to pay parking tickets or reporting a power outage. Aurelian lessens this burden and lets 9-1-1 dispatchers deal with actual emergencies.
  • Strobe
    Strobe (w2022)Active • 15 employees • Victoria, BC, Canada
    Strobe connects first-party social APIs with modern LLMs so you can quickly find and evaluate influencers in your community. We’re launching with Instagram and rolling out integrations with LinkedIn, YouTube, and other platforms soon.
  • Backdrop
    Backdrop (w2023)Active • 2 employees • San Francisco, CA, USA
    We are starting out with our global expense management software for the entertainment industry, which still rely on spreadsheets and paper receipts to manage the $650B+ they spend each year.
  • Demo Gorilla
    Demo Gorilla (w2022)Active • 2 employees • San Francisco, CA, USA
    Demo Gorilla is a browser extension for live SaaS demos that tells your sales team exactly what to say to sell your product. Keep everyone on the same page with the best customer stores, competitive talking points and feature explanations. Collect insights across product, engineering, marketing, and sales experts to ensure your sales team always knows exactly what will close this deal. - Automatically get relevant talking points for the part of the product you're on and who you're talking to - Track notes and metrics back in to your CRM - Share slides and images in line while demoing to set the stage - Clean up your UI to keep attendees focused
  • Cuboh
    Cuboh (s2019)Acquired • 50 employees • Victoria, BC, Canada
    We build software to help restaurants manage their third-party delivery online orders.
  • Worksphere
    Worksphere (w2021)Acquired • 6 employees • Seattle, WA, USA
    Worksphere helps companies manage a hybrid workplace where employees work from the office and from home. We allow employees to reserve a desk, know who will be in office, and better coordinate in-person meetings. Companies can let go of unused office space and save money.