Developer Tools Startups

PubNub provides a platform for building real-time interactive applications with messaging, presence detection, and edge computing capabilities. The service enables developers to deploy scalable, globally distributed apps with low latency and high reliability for use cases including chat, virtual events, and IoT device control.

7 investors

QA Wolf builds an AI-powered testing platform that autonomously explores applications, writes test code, and executes tests in parallel for web, mobile, and native apps. The platform is designed for development teams to accelerate their QA cycles and enable faster shipping of software.

7 investors

Qloo offers an API providing access to a database of cultural entities along with consumer behavior and sentiment data, giving developers insight into global consumer affinities and taste-based recommendations. It is built on machine learning models and can be integrated into websites, internal systems, and mobile applications.

7 investors

Quiltt provides fintech infrastructure that connects builders to financial data aggregators and enrichment providers through a single integration. It targets fintech companies and developers working in open banking and personal finance.

7 investors

Quilt provides data management services that treat data like code, turning Amazon S3 into a versioned data hub for teams. Its offering includes a Python client, a web catalog for browsing and visualizing S3, and a CloudFormation backend for compute and identity management.

7 investors

Radar Protect provides fraud and compliance teams with real-time location and device signals — combining GPS, Wi-Fi, IP, Bluetooth, and sensor data — to detect GPS spoofing, account takeovers, device tampering, and promotional abuse. It offers prebuilt and custom fraud rules and jurisdiction verification for use cases such as online gaming/betting, fintech, and delivery platforms.

7 investors

Rafay builds infrastructure orchestration and workflow automation software for self-service compute consumption across GPU and CPU environments. The platform serves sovereign AI clouds, cloud service providers, and large enterprises seeking better kubernetes and AI workload management.

7 investors

Railway builds a cloud computing platform designed to reduce deployment friction and simplify the software development lifecycle. The service targets developers and engineering teams who want to deploy applications with minimal configuration overhead.

7 investors

Reactor provides real-time infrastructure and APIs for developers building with world models, running them on a globally distributed GPU network with sub-50ms streaming. It offers an SDK and model catalog for streaming interactive worlds, video, and audio, serving developers and enterprises building real-time generative media applications.

7 investors

Redis provides an in-memory caching layer that delivers sub-millisecond data access for real-time applications across on-premise, cloud, and hybrid environments. Its Redis Enterprise offering targets businesses needing high-availability, scalable caching with multiple caching patterns such as cache-aside, write-behind, write-through, and prefetching.

7 investors

Reducto provides document processing APIs that parse, classify, extract, and edit data from documents at enterprise scale. The platform combines OCR and vision language models to transform unstructured documents into structured data for AI teams across finance, healthcare, legal, and other industries.

7 investors

Reflex is a platform for building and deploying enterprise applications in Python, combining framework, infrastructure, and data connectivity in a single unified system. It enables teams to develop, deploy, and manage production applications without fragmented tooling or multiple specialized roles.

7 investors

Render provides cloud infrastructure and hosting services for software teams to deploy applications at any scale, from prototypes to large distributed systems, with a focus on reliability and uptime.

7 investors

Rive is a design and animation platform where creators build interactive experiences that run natively across web, mobile apps, games, and devices using an open-source runtime and GPU-accelerated vector graphics engine. It serves designers, animators, and developers who want to create and ship interactive content without handoffs between design and code.

7 investors

Rosebud AI offers a tool that lets people create browser games from text descriptions without coding skills, using generative AI. It targets anyone who wants to build games regardless of technical background.

7 investors

RSS3 builds products and open infrastructure for keeping public web information portable and readable, including Folo (a unified reading timeline), RSSHub (an open-source layer that converts sources into RSS feeds), and the $RSS3 token that links its data, applications, and ecosystem. It serves readers, developers, and contributors focused on open feeds and RSS-based reading workflows.

7 investors

Rune is a mobile app where users voice chat and play indie multiplayer games with friends, and where developers build those games using its SDK without writing backend code. It serves both gamers and game developers in the multiplayer gaming market.

7 investors

RunSafe Security develops cybersecurity software that hardens embedded systems and commercial/defense software against exploitation by disrupting the determinism attackers need to build reliable exploits. The company serves organizations across commercial and defense sectors seeking to protect mission-critical software and connected devices.

7 investors

Salt OS builds a platform for deploying and managing AI solutions on-premises for regulated enterprises, emphasizing data sovereignty and maintainability of AI workflows.

7 investors

Sapiom provides an execution engine and access network that lets AI agents use external capabilities — such as authentication, LLM inference, web search, voice, image and video generation, compute, databases, and messaging — through a single API key, with metered pay-per-use billing. It targets developers building AI agents in production, handling access, authentication, and billing across many vendors behind the scenes.

7 investors

Seldon provides a Kubernetes-native MLOps and LLMOps platform for deploying, scaling, and governing machine learning and AI models in production across any cloud or on-premise environment. The platform combines real-time inference serving, model monitoring, drift detection, explainability, and governance tools for VP Engineering, Chief AI Officers, and AI Platform Architects.

7 investors

SendHub provides an online business SMS messaging platform used by companies to communicate with mobile workforces and customers. It serves businesses ranging from small and medium-sized companies to large enterprises.

7 investors

Sentry is an application monitoring and error-tracking platform that developers integrate via SDKs to catch, root-cause, and fix errors and performance issues across development and production. It offers AI-based debugging and code review through its Seer agent, along with integrations for tools like GitHub, Slack, Jira, and Linear.

7 investors

Shinkai is a decentralized AI platform that lets users build and run autonomous agents across multiple AI networks (local, cloud, and decentralized models) while keeping identity, data, and payments under user control. It offers a browser runtime and a desktop runtime with a unified agent builder, an AI network router, agent collaboration, tool integrations, and x402 decentralized micropayments.

7 investors