Developer Tools Startups funded by Y Combinator (YC) in New York 2024

At Aptible, we envision a world where developers achieve more with less infrastructure. We’re building the platform that empowers developers at companies of all stages of development to move beyond the traditional method of managing infrastructure—DIY with expert infrastructure and platform engineers on AWS, GCP, or Azure. We’ve done this through our secure, compliant, reliable, and scalable Platform as a Service that’s been used by thousand of developers, hundreds of companies, and dozens of publicly traded and unicorn companies since 2013.

We build the tools companies need to provide performant and scalable authorization for their applications. We’re founded by 3 successful entrepreneurs with expertise in enterprise software, most recently as leaders at Red Hat. Jake and Joey met on the APIs team at Google in 2010. They went on to found Quay, where Jimmy joined as their first hire. Over the past decade, they’ve changed the landscape for building and deploying software.

ReadMe provides every company the ability to easily create beautiful documentation, and build loyal, productive developer communities. With ReadMe, build developer portals that combine support, tutorials, topical guides and API exploration. ReadMe makes it trivial to keep docs up-to-date and has community oriented features that help drive adoption. Wanna see what it'd look like to work at ReadMe? Our careers page takes a stab at it! https://readme.com/careers

Mobot (YC W19) is a QA-as-a-service platform using actual mechanical robots to automate testing of repetitive functions on real mobile devices. Mobot's human-supervised robots make it possible to automate mobile app tests that emulators, virtual devices, and existing frameworks can't. This approach eliminates thousands of hours of manual testing, increases testing efficiency and physical device coverage, and captures more bugs in-app before app store launches than software can do alone.

We're making it easy, cheap and fun for startups to build on SMS again. Sendo is the most developer-friendly SMS API, with great documentation, a fast dashboard, helpful monitoring features, easier 10DLC compliance and much more. Save 40%+ compared to Twilio and other options, and get started sending messages in 1-2 days instead of waiting weeks for your 10DLC campaigns to get approved.

Eligible is the nation's first insurance billing platform built for builders. Founded in Mountain View California in 2011, Eligible's platform gives bootstrapping healthcare startups the scale of enterprise, and the Fortune 500s the agility of the hungry entrepreneur. Eligible has been listed as one of Business Insider’s 19 Hottest Startups to Watch and Katelyn has been featured in Forbes 30 Under 30 in Healthcare, Fast Company's Most Creative People in Business, and was named a Rising Star of Healthcare by Becker’s IT & CIO Review.

Avenue is a simple way for business teams to set up alerts from their database or data warehouse. Think Datadog / PagerDuty for operations teams. Operations teams create set-and-forget alerts on all their data, so they can be more proactive with their time (and monitor on more nuanced triggers than just what fits on their dashboard page). Avenue can improve response times to critical problems from several days to real-time by alerting directly on the data sources that customers already use.

Porter is the easiest way to deploy and scale your applications on AWS, Azure, and GCP. Connect your own cloud account, and Porter will provision and manage the underlying infrastructure for you - simply point at your repository and Porter will handle the rest, from building your application to autoscaling it. Under the hood, Porter manages the same kind of infrastructure that growth-stage companies use and allows you to scale without DevOps overhead.

Infield helps software teams keep their open source dependencies up to date. We’re automating away the toilsome work of reading changelogs, assessing risk, and upgrading packages so that software teams can focus on shipping features. We’re a small team of repeat founders passionate about making open source easier to use.

Atri Labs is Vercel for Python developers. We are an open-source web framework that helps Python developers create production web applications. We have $6k+ in ARR, 4k+ GitHub stars, and 15+ companies in production like Meta, Nvidia and Marqeta who use us to build their internal ML web apps.

Mobileboost is the leading AI Native Mobile Testing Tool featuring 1. Automated Testing: Generates test cases and tests your mobile app autonomously on detailed instructions or high level objectives. 2. Visual Recognition: Uses the visual output of your phone, eliminating the need for UI hierarchy dependency and element identifiers 3. Cross-Technology Compatibility: Works seamlessly with all technologies including web views and native phone elements. No source code access required.

ScratchDB is a platform that automates all aspects of managing an analytical database: server configuration, data ingestion, queries, replication, and sharding. We are built on top of Clickhouse with a developer experience that you'll love.

Decent's core product,[The Box](https://decent.xyz/), enables 1-click transactions using any token across chains. For example, a user can purchase an Optimism NFT off primary or secondary sales using USDC on Arbitrum. As applications splinter across an increasing number of rollups and app chains, wallets and dapps will have to meet users at their point of liquidity vs. expecting users to jump through hoops to arrive with tokens on the correct network.

We are building a cloud platform to help companies deploy and scale AI applications.

Instant is the modern Firebase. We make it easy to build realtime and collaborative applications like Notion or Figma.

Phind is an intelligent answer engine for developers. Focused on helping you solve challenging problems, Phind uses generative AI to get you from an idea to a working product. Connected to the internet and your codebase, Phind has the context it needs to get you the right answer.

Pluralith automates compliance by documenting cloud infrastructure directly from the codebase. Companies like Jefferson Health pay us to automate their infrastructure compliance and save 5h a week per infrastructure engineer. More simply put: We generate infrastructure diagrams directly from Terraform state.

Reflect is a no-code tool for automated website testing. Instead of building and maintaining complex Selenium tests, companies use Reflect to run automated end-to-end tests without writing code.

CodeStream's IDE plugins take the pain out of code reviews. With one command, request feedback on a snapshot of your repo, including uncommitted & unpushed code, allowing you to verify that your work-in-progress is on the right track. (You can also do it the old-fashioned way by committing & pushing at the end of your dev sprint, of course)

We help developers collaborate at scale and build better APIs. Optic’s open source tools makes it easy for developers to document API changes, review each other’s API changes during code review, and catch breaking changes before they reach production. **tl;dr** It’s version control but for behavior not code. We are taking the really successful ideas from Git / Code Review / CI and applying them to API descriptions and (future) other non-code artifacts. Engineers at [Snyk](https://snyk.io/) use Optic daily to make the new Snyk API great. Read their engineering blog: [Snyk's shift left approach to API development | Snyk](https://snyk.io/blog/snyk-api-development-shift-left/)