MentionFox lists 79 Developer tools companies for 2023. Of them, 79 are Y Combinator companies (the newest batch here is Summer 2023, with 33).
Companies79
Y Combinator79
Other years
All years (678) 2026 (89) 2025 (82) 2024 (91) 2022 (64) 2021 (83) 2020 (54)
Developer tools startups in 2023
| Company | What it does | Date | Amount | Round / stage | Record |
|---|---|---|---|---|---|
| Automorphic | Infuse knowledge into language models with just 10 samples | Summer 2023 | Y Combinator batch | Y Combinator listing | |
| Cedana | Fast, reliable, reproducible AI with GPU live migration | Summer 2023 | Y Combinator batch | Y Combinator listing | |
| Chatter | Dead simple LLM testing and iteration | Summer 2023 | Y Combinator batch | Y Combinator listing | |
| Continue | Pioneering open-source coding agent | Summer 2023 | Y Combinator batch | Y Combinator listing | |
| Core | Your AI butler that understands you really well and proactively acts… | Summer 2023 | Y Combinator batch | Y Combinator listing | |
| Corgea | Corgea finds, and fixes insecure code and packages autonomously | Summer 2023 | Y Combinator batch | Y Combinator listing | |
| Dioxus Labs | Web, Desktop, and Mobile apps with one codebase in Rust | Summer 2023 | Y Combinator batch | Y Combinator listing | |
| FlowiseAI | Open source GenAI development platform | Summer 2023 | Y Combinator batch | Y Combinator listing | |
| Glide | Crypto Deposits, Wallet Funding, and Pay-with-crypto Infra | Summer 2023 | Y Combinator batch | Y Combinator listing | |
| Hiro | Agents that handle security work | Summer 2023 | Y Combinator batch | Y Combinator listing | |
| Inconvo | Build chat-with-data agents for customer-facing applications | Summer 2023 | Y Combinator batch | Y Combinator listing | |
| kapa.ai | The fastest way to build AI assistants on technical content | Summer 2023 | Y Combinator batch | Y Combinator listing | |
| Metoro | AI SRE For Teams on Kubernetes | Summer 2023 | Y Combinator batch | Y Combinator listing | |
| Minded | Cursor for AI Agents | Summer 2023 | Y Combinator batch | Y Combinator listing | |
| Mocha | Build and publish web apps in minutes | Summer 2023 | Y Combinator batch | Y Combinator listing | |
| Morph | Fast Models Optimized for Coding Agents | Summer 2023 | Y Combinator batch | Y Combinator listing | |
| OpenPipe | Turn expensive prompts into cheap fine-tuned models | Summer 2023 | Y Combinator batch | Y Combinator listing | |
| Opensteer | Specialized agents for real work | Summer 2023 | Y Combinator batch | Y Combinator listing | |
| ParadeDB | Unify application data, vectors, and full-text search in one Postgres | Summer 2023 | Y Combinator batch | Y Combinator listing | |
| Parea | Test, evaluate & observe your LLM applications | Summer 2023 | Y Combinator batch | Y Combinator listing | |
| PeerDB | Fast, native ETL for Postgres 🐘 🚀 | Summer 2023 | Y Combinator batch | Y Combinator listing | |
| RecipeUI | The open source Postman alternative. | Summer 2023 | Y Combinator batch | Y Combinator listing | |
| refine | Open-source Retool for enterprise | Summer 2023 | Y Combinator batch | Y Combinator listing | |
| Repaint | Build a website by chatting with AI | Summer 2023 | Y Combinator batch | Y Combinator listing | |
| Silimate | Fast, efficient agents for chip design and debug | Summer 2023 | Y Combinator batch | Y Combinator listing | |
| Smobi | Send texts your customers actually want over RCS | Summer 2023 | Y Combinator batch | Y Combinator listing | |
| sudocode | orchestrate your coding agents with sudocode | Summer 2023 | Y Combinator batch | Y Combinator listing | |
| Sweep | The best AI coding assistant for JetBrains | Summer 2023 | Y Combinator batch | Y Combinator listing | |
| Tempo | Visual Editor for React, powered by AI | Summer 2023 | Y Combinator batch | Y Combinator listing | |
| Terracotta AI | AI-powered Infrastructure as Code PR reviews | Summer 2023 | Y Combinator batch | Y Combinator listing | |
| Tiptap | The open-source document editor for humans and AI agents. | Summer 2023 | Y Combinator batch | Y Combinator listing | |
| Trainy | Infrastructure for managing GPU clusters for training/serving. | Summer 2023 | Y Combinator batch | Y Combinator listing | |
| Tremor | The UI toolkit for Dashboards | Summer 2023 | Y Combinator batch | Y Combinator listing | |
| Aqueduct | Create, edit, and share procedural material graphs. | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| Arroyo | Cloud-native stream processing | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| Automat | Agentic automation that understands context, recovers, and improves. | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| BuildJet | High-performance computing cloud | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| Chima | Building infrastructure tools to help large companies customize their… | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| Cloudchipr | The #1 Actionable FinOps Platform | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| co.dev | Turn your ideas into full-stack apps | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| DataSuite | Dataset Management for AI Trainers | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| Depot | Software delivery built for machine scale. | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| Designbase | Design and build great interfaces | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| DrDroid | Your best friend in production. | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| Escape | Offensive security for the teams that are 100x outnumbered | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| Extend | Production-ready document processing | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| EzDubs | Real-time speech translation | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| Fastgen | Webflow for the Backend | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| Fern | Instantly offer SDKs and API Docs | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| Helicone | LLM Observability for Developers | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| highlight.io | The open source, fullstack monitoring platform: stop guessing why… | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| IcePanel | Design and explain complex software architecture. | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| Infinia | Move money programmatically - built for developers | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| Infisical | Unified platform for secrets, certs, and privileged access management | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| Inkeep | Build AI Agent teammates and automations in code or no-code | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| LiteLLM | Winter 2023 | Y Combinator batch | Y Combinator listing | ||
| Nango | A single API for all your integrations | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| Odigos Technologies Inc. | Enterprise-Grade OpenTelemetry | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| Omnistrate | Transform any software to multi-cloud SaaS in minutes not years | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| OpenInt | Open Source Embedded Product Integrations | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| Pierre | Pierre is a new, opinionated, git platform. | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| PlayAI | Our mission is to make Voice AI accessible and useful to all. | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| PoplarML | Deploy Machine Learning Models with One Command | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| Portalform | Build and host internal tools | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| Propexo | Plaid for Commercial Real Estate | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| Reflex | The operating system for building mission-critical enterprise apps. | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| Relace | Models and infra for coding agents | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| Resend | Email for developers | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| Sage AI | Your self-generating, self-maintaining code knowledge base. | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| Skyhook | PaaS-like experience with the power of Kubernetes, on your cloud | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| SpecCheck | Unifying how the optical industry does business. | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| SuperAPI | Programmable API gateway that makes APIs cacheable | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| Teclada | Remote Shell Access in the Browser | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| Texel.ai | Run AI pipelines 10x faster | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| Traceloop | Know what your LLM is doing — and why it’s failing | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| Trigger.dev | Build and deploy fully‑managed AI agents and workflows | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| Versori | Agentic integrations & automations for enterprise | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| Vocode | Open source Voice AI | Winter 2023 | Y Combinator batch | Y Combinator listing | |
| Wild Moose | Automating root cause analysis with generative AI | Winter 2023 | Y Combinator batch | Y Combinator listing |
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Figures come only from the record linked in each row; a blank means the record gives none. How these lists are built.