# Y Combinator's Developer Tools Investments: 81 Startups in Its Portfolio (2026) > The 81 Developer Tools startups Y Combinator has backed, by stage: $516M raised between them. From the rounds we track; updated nightly. Source: https://millionrounds.com/portfolio-maps/y-combinator-developer-tools-portfolio (Millionrounds; every figure on the page links to its filing or article) ## Pre-seed and seed 58 - [Intrinsic](https://millionrounds.com/company/intrinsic) - [Speedscale](https://millionrounds.com/company/speedscale) - [Orthogonal](https://millionrounds.com/company/orthogonal) - [Nango](https://millionrounds.com/company/nango) - [Bun](https://millionrounds.com/company/bun) - [*N* Nebula](https://millionrounds.com/company/nebula) - [Mentum](https://millionrounds.com/company/mentum) - [Estimote, Inc.](https://millionrounds.com/company/estimote-inc) - [Vocode](https://millionrounds.com/company/vocode) - [Frigade](https://millionrounds.com/company/frigade) - [Openbase](https://millionrounds.com/company/openbase) - [Metriport](https://millionrounds.com/company/metriport) - [Fastgen](https://millionrounds.com/company/fastgen) - [PreFlight](https://millionrounds.com/company/preflight) - [CodeAnt AI](https://millionrounds.com/company/codeant-ai) - [Second](https://millionrounds.com/company/second) - [FeaturePeek](https://millionrounds.com/company/featurepeek) - [Reploy](https://millionrounds.com/company/reploy) - [Curvenote](https://millionrounds.com/company/curvenote) - [webapp.io](https://millionrounds.com/company/webapp-io) - [Storylane](https://millionrounds.com/company/storylane) - [Planar](https://millionrounds.com/company/planar) - [RecipeUI](https://millionrounds.com/company/recipeui) - [Onu](https://millionrounds.com/company/onu) +34 more ## Series A 11 - [Reflex](https://millionrounds.com/company/reflex) - [Junction](https://millionrounds.com/company/junction) - [Salsa](https://millionrounds.com/company/salsa) - [Resend](https://millionrounds.com/company/resend) - [FrankieOne](https://millionrounds.com/company/frankieone) - [Enode](https://millionrounds.com/company/enode) - [Merico](https://millionrounds.com/company/merico) - [Rootly](https://millionrounds.com/company/rootly) - [Rocket.Chat](https://millionrounds.com/company/rocket-chat) - [Warmly](https://millionrounds.com/company/warmly) - [Malga](https://millionrounds.com/company/malga) ## Stage not reported 7 - [Same](https://millionrounds.com/company/same) - [Flexpa](https://millionrounds.com/company/flexpa) - [Svix](https://millionrounds.com/company/svix) - [Apto Payments](https://millionrounds.com/company/apto-payments) - [Dataform](https://millionrounds.com/company/dataform) - [AGAPÉ](https://millionrounds.com/company/agape) - [PolicyFly](https://millionrounds.com/company/policyfly) ## Series B 5 - [FIDEL API](https://millionrounds.com/company/fidel-api) - [Method Financial](https://millionrounds.com/company/method-financial) - [Mintlify](https://millionrounds.com/company/mintlify) - [Courier](https://millionrounds.com/company/courier) - [Memfault](https://millionrounds.com/company/memfault) ## Segment by segment ### Pre-seed and seed 58 startups · $107M raised - [**Intrinsic**](https://millionrounds.com/company/intrinsic) Intrinsic is an advisory and valuation firm providing time-critical transaction support and valuation advice. United States $18M - [**Speedscale**](https://millionrounds.com/company/speedscale) Speedscale is a software company based in Atlanta, founded in 2020 and backed by Y Combinator. United States $9.0M - [**Orthogonal**](https://millionrounds.com/company/orthogonal) Orthogonal is a publishes long-form essays and stories on how software & data science are transforming multiple industries. United States $7.8M - [**Nango**](https://millionrounds.com/company/nango) Nango is an open-source platform that enables B2B SaaS companies and AI agents to build, run, and maintain product integrations wi United States $7.5M - [**Bun**](https://millionrounds.com/company/bun) Bun operates fast food joints that provides burgers with plant-based meat. United States $7.0M - [*N* **Nebula**](https://millionrounds.com/company/nebula) Nebula is a music company where artists earn money for their royalties. United States $6.5M - [**Mentum**](https://millionrounds.com/company/mentum) Mentum is an API for fintech companies that offers investment services. United States $4.2M - [**Estimote, Inc.**](https://millionrounds.com/company/estimote-inc) Estimote, Inc. United States $3.4M ### Series A 11 startups · $164M raised - [**Reflex**](https://millionrounds.com/company/reflex) The Reflex technology platform connects top-retail associates with retailers when they need staffing help. United States $28M - [**Junction**](https://millionrounds.com/company/junction) Developers at leading digital health companies, from Metabolic clinics to Longevity, use Junction to remotely access granular heal United States $21M - [**Salsa**](https://millionrounds.com/company/salsa) Salsa, founded in 2021 by Juan Barroso and John Kramer, is an embedded payroll provider based in San Francisco, California. United States $20M - [**Resend**](https://millionrounds.com/company/resend) Resend is a developer-first email infrastructure platform founded in 2023, evolving from an open-source project started in 2022. United States $18M - [**FrankieOne**](https://millionrounds.com/company/frankieone) FrankieOne is a global regulatory technology company based in Melbourne, Australia, founded in 2017 by Simon Costello and Aaron Chipper. Australia $15M - [**Enode**](https://millionrounds.com/company/enode) Enode is a SaaS technology company based in Oslo, Norway, founded in 2020. Norway $15M - [**Merico**](https://millionrounds.com/company/merico) Merico develops code analytics technology to support engineering teams in understanding and optimizing productivity and code quality. United States $12M - [**Rootly**](https://millionrounds.com/company/rootly) Rootly is an AI-native on-call and incident management platform founded in 2020 in San Francisco, California. United States $12M ### Stage not reported 7 startups · $39M raised - [**Same**](https://millionrounds.com/company/same) Same is a SaaS company that offers a software platform for non-coders to build real products, websites and apps online. United States $14M - [**Flexpa**](https://millionrounds.com/company/flexpa) Flexpa allows digital health apps to connect to new patient access APIs. United States $8.6M - [**Svix**](https://millionrounds.com/company/svix) Svix is an open-source webhooks-as-a-service platform founded in 2021, designed to help companies send, receive, and test webhooks United States $7.8M - [**Apto Payments**](https://millionrounds.com/company/apto-payments) Apto Payments is a card issuance platform that enables companies to design and launch card programs. United States $5.6M - [**Dataform**](https://millionrounds.com/company/dataform) Dataform manages data pipelines in data warehouse. United Kingdom $2.0M - [**AGAPÉ**](https://millionrounds.com/company/agape) Agape is leading the community of shoe lovers. United States $1.0M - [**PolicyFly**](https://millionrounds.com/company/policyfly) PolicyFly is a New York-based insurtech company founded in 2018. United States $500K ### Series B 5 startups · $206M raised - [**FIDEL API**](https://millionrounds.com/company/fidel-api) Fidel API is a global financial infrastructure platform that provides developers with a suite of APIs to connect payment cards, su United Kingdom $65M - [**Method Financial**](https://millionrounds.com/company/method-financial) Method Financial is a financial connectivity API for consumer liability data + payments United States $42M - [**Mintlify**](https://millionrounds.com/company/mintlify) Mintlify is an AI-native documentation platform designed to help companies create, host, and manage developer-facing documentation. United States $37M - [**Courier**](https://millionrounds.com/company/courier) Courier is a notification infrastructure platform designed to enhance product-to-user communication. United States $35M - [**Memfault**](https://millionrounds.com/company/memfault) IoT reliability platform that gives developers a more scalable & sustainable process to transform the way they build & operate dev United States $27M **How this map is made.** Every startup here works in Developer Tools and has raised money in a round we track that names Y Combinator as an investor. Each sits under the stage of its latest round. Rebuilt nightly; updated 15 November 2026. ## More portfolio maps [All portfolios](https://millionrounds.com/portfolio-maps) [Sector portfolio **Y Combinator's AI portfolio** 1,143 startups · $44B](https://millionrounds.com/portfolio-maps/y-combinator-ai-portfolio)[Sector portfolio **Y Combinator's Fintech portfolio** 338 startups · $24B](https://millionrounds.com/portfolio-maps/y-combinator-fintech-portfolio)[Sector portfolio **Y Combinator's Big Data & Analytics portfolio** 201 startups · $3.4B](https://millionrounds.com/portfolio-maps/y-combinator-big-data-analytics-portfolio)[Sector portfolio **Y Combinator's Healthtech portfolio** 150 startups · $4.2B](https://millionrounds.com/portfolio-maps/y-combinator-healthtech-portfolio)[Sector portfolio **Y Combinator's IT Services portfolio** 148 startups · $840M](https://millionrounds.com/portfolio-maps/y-combinator-it-services-portfolio)[Sector portfolio **Y Combinator's Web3 & Crypto portfolio** 139 startups · $7.4B](https://millionrounds.com/portfolio-maps/y-combinator-web3-crypto-portfolio) ## Raising from investors like Y Combinator? 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