Developer Tools Startups

Respan provides infrastructure for teams to trace, evaluate, and monitor AI agent workflows in production at scale. The platform helps developers and enterprise teams operate large language model applications reliably through observability and quality improvement tools.

2 investors

Restate is a lightweight runtime that turns AI agents, workflows, and backend services into durable processes with durable execution, consistent state, and reliable communication. Built on a Rust runtime, it lets developers write resilient distributed applications that automatically resume after failures, running on servers, containers, or FaaS via self-hosting or Restate Cloud.

2 investors

Retab provides end-to-end document automation that turns files such as PDFs, scans, spreadsheets, and emails into typed data using APIs that understand layout, tables, and schemas. It targets developers and operations teams needing document pipelines with parsing, extraction, validation, human review, confidence scoring, and audit trails, including enterprise deployment controls.

2 investors

Revyl provides mobile testing and verification infrastructure for development teams, capturing runtime evidence from iOS and Android builds. The platform enables teams to run end-to-end mobile workflows, track app behavior, and generate shareable evidence for verification across release pipelines.

2 investors

Rewind.ai is a platform that provides access to 400+ AI tools and models—including self-hosted open-source models (Qwen 2.5, FLUX, Kokoro, Whisper) and external models (GPT-4, Claude, Gemini)—through a single token-based system with a free tier. It runs inference on its own GPU infrastructure and bills external model usage per token at provider cost with no subscription.

2 investors

Rex.Fit makes a wearable camera device that uses computer vision to automatically track food intake and nutrition, alongside an API that fitness facilities integrate for nutritional analysis.

2 investors

Rhino.fi builds stablecoin and digital money infrastructure used by global financial products. The company provides reliable systems combining technology, fintech, security, and growth expertise for financial applications.

2 investors

Riptides provides identity, access control, and audit trails for AI agents and traditional workloads, enforcing security at the Linux kernel level so workloads receive short-lived, just-in-time credentials instead of holding long-lived API keys. It targets security and platform teams and integrates with existing secret stores, cloud IAM, and observability tools via SPIFFE, Kubernetes metadata, and federation with AWS and GCP.

2 investors

Rally Protocol provides a mobile SDK for React Native developers to build blockchain features and applications. The company targets mobile developers seeking to integrate blockchain functionality into their apps.

2 investors

Rollup provides software and workflows designed to accelerate the development and iteration of complex hardware systems across industries including aerospace, robotics, and nuclear technology.

2 investors

Rubic is a cross-chain and privacy aggregator that enables any-to-any crypto swaps and bridging across 70+ blockchains by aggregating 340+ DEXs, bridges, and intent protocols. It offers API/SDK tools for Web3 dApps to build their own crypto exchanges, along with private, no-KYC swap functionality for traders.

2 investors

RudderStack provides real-time event data transformation, letting engineering and data teams modify, clean, enrich, and govern event data in flight using JavaScript or Python before it reaches downstream tools. Its Transformations feature supports data privacy, quality controls, custom integrations, and advanced use cases like real-time personalization and activations.

2 investors

Runlayer builds a trust and safety layer that enables enterprises to deploy AI agents and integrations across their organizations securely. The platform makes enterprise AI adoption manageable by providing control and safety guardrails between enterprises and their AI infrastructure.

2 investors

RunWhen builds AI-powered tools and workflows for engineers to automate incident response, infrastructure management, and operational tasks across diverse technology stacks including cloud platforms, Kubernetes, databases, and mainframes. The platform enables teams to rapidly deploy thousands of specialized engineering tools tailored to their specific applications and infrastructure.

2 investors

Ryvn provides infrastructure and platform software for enterprises operating mission-critical systems in healthcare, finance, defense, and other high-consequence domains. The company enables organizations to deploy and manage software at scale across isolated customer environments.

2 investors

Sagittal AI builds Neo, an AI system that automates tasks across the software development lifecycle by integrating with tools like Jira, GitHub, Linear, and Confluence to complete work, run reviews, and enforce coding and security standards. It targets enterprise and regulated development teams, offering compliance with security frameworks (NIS-2, NIST, OWASP, IEC 62443) and sovereign UK/EU deployments.

2 investors

Sail Research provides AI inference infrastructure with per-request completion windows that let customers trade off speed against cost, targeting AI agent workloads that consume large volumes of tokens. It offers an API for large-scale, bursty inference traffic aimed at developers building long-horizon and background agents.

2 investors

Sanctum provides staking infrastructure for the Solana blockchain, including liquid staking tokens (LSTs), white-label validators, and custom LST launches for projects and exchanges. It also offers a liquidity engine for yield on SOL and Web3 DevOps tooling for transaction delivery and RPC request handling.

2 investors

Stream is a private voice ring device that enables universal dictation and speech-to-text capture across iOS and Mac applications, designed for users who need to record thoughts and ideas hands-free.

2 investors

Saphira automates functional safety analysis, risk modeling, and compliance evidence generation for hardware and robotics teams. The platform generates HARAs, TARAs, FMEAs, and safety cases to help companies meet ISO and regulatory standards before certification review.

2 investors

Provides developer tools and SDKs for the Nx video management system (Nx EVOS/Nx Meta), including a RESTful HTTP Server API, a Metadata SDK for integrating third-party video analytics, Video Source and Storage SDKs, and the Nx AI Manager for deploying AI/ML models. Serves developers, OEMs, resellers, and software vendors building video analytics and camera integration solutions.

2 investors

Scalekit provides OAuth integration and token management infrastructure for AI agents to authenticate and securely access third-party applications like Gmail, Slack, Salesforce, and 100+ others. The platform handles delegated OAuth flows, credential storage, and tool execution on behalf of users, enabling agents to take actions within target apps using user-specific permissions.

2 investors

ScatterSpoke is an AI copilot that collects and analyzes team feedback from software engineering events such as retrospectives, standups, post-mortems, and developer experience surveys, turning it into themes, impact estimates, and prioritized action items. It integrates with tools like Jira, Slack, and Teams and serves engineering teams and leaders looking to improve developer experience and productivity.

2 investors

Scramjet Cloud Platform is a distributed data processing platform for deploying and running data integration programs across multiple locations and environments with minimal configuration. It enables developers to run custom code on diverse infrastructure, from small devices to cloud clusters, with automatic data connectivity between programs.

2 investors