Developer Tools Startups

ResponsiveAds provides a design platform for creating responsive digital advertisements that automatically adapt to different screen sizes and formats. The company serves marketing teams and designers who need to produce high-performing ad creatives at scale across multiple channels and platforms.

1 investor

Result is an operating system that helps entrepreneurs start and run businesses, offering tools for app development, payments, marketing, customer support, business analytics, legal incorporation, product design, market research, performance optimization, fundraising, and integrations with third-party services.

1 investor

Resultant is a consulting and technology services firm that helps organizations with technology strategy, data analytics, digital transformation, and custom application development. The company serves enterprises seeking to modernize operations and solve complex business problems through collaborative advisory and implementation services.

1 investor

RethinkDB is a distributed document database that enables developers to query JSON documents across multiple programming languages and integrates with modern web frameworks for real-time applications.

1 investor

Retrace is an open-source record-replay tool and AI debugger for Python that captures failed pytest and CI runs as replayable .retrace artifacts, letting an AI debug backwards from real runtime values to the root cause. It targets developers and coding agents debugging CI failures, flaky tests, and production crashes, with verification in VS Code.

1 investor

Rev AI provides a developer-first speech-to-text API delivering machine-generated transcripts from pre-recorded files or real-time audio streams across 57+ languages. It also offers voice AI insights such as sentiment analysis, topic extraction, summarization, and translation for developers and enterprises.

1 investor

REV1 develops AI-powered software that automatically converts 3D CAD models into production-ready 2D engineering drawings with geometric dimensioning and tolerancing annotations for mechanical engineers.

1 investor

ReversingLabs provides a cybersecurity platform for software supply chain and file security, analyzing and deconstructing software binaries to detect risks. It serves enterprises including Fortune 500 companies and cybersecurity vendors across software, banking, defense, retail, and insurance sectors, with its Spectra Core tracking over 40 billion searchable files daily.

1 investor

Revyz builds enterprise-grade tools for Atlassian Cloud administrators, providing configuration deployment management and data protection (backup) for Jira and Confluence environments. The company was acquired by data security firm Spin.AI in 2026, extending SaaS data protection and configuration management across Atlassian, Google Workspace, Microsoft 365, Slack, and Salesforce.

1 investor

VitalStrata provides AI software to help managed care organizations improve the accuracy of risk adjustment coding and documentation, making their operations more resistant to audit scrutiny.

1 investor

Rhino builds a system of record for enterprise business logic, rules, and decisions that are typically scattered across legacy systems and processes. The platform helps organizations modernize by cataloging and governing decision logic, enabling faster and safer digital transformation.

1 investor

RICOS develops computational science and machine learning technology to identify and visualize manufacturing challenges, helping companies optimize design and product development processes. The company serves manufacturing organizations seeking to accelerate processes through scientific analysis and simulation-based AI.

1 investor

Riften provides a routing layer that sits between a company's applications and large language model APIs, directing each request to the least expensive capable model and using self-hosted open-weight models where possible to reduce inference costs. It also uses the resulting task data to train private, company-owned models on recurring work, serving businesses that run AI-powered applications.

1 investor

RunInfra benchmarks machine learning models and serving engines across different GPUs, provides real performance measurements (latency, throughput, cost), and delivers a deployment-ready kit that runs on the user's choice of cloud infrastructure. The platform serves machine learning engineers and teams building inference workloads who need transparent, portable model deployment options.

1 investor

Snow Commander is a hybrid cloud management platform that automates resource provisioning, lifecycle management, and multi-cloud visibility across public and private cloud environments including AWS, Azure, GCP, and on-premises infrastructure.

1 investor

Rilevera builds a platform that uses AI to assist detection engineering teams in creating and managing security rules, enabling organizations to achieve comprehensive threat coverage without sacrificing rule quality.

1 investor

Rindler provides a platform that enables AI agents to reliably navigate and interact with any website, offering infrastructure for deterministic web access. The platform serves developers and organizations building AI agents that need to automate work across web-based systems.

1 investor

Rinstack is an AI-powered platform for building and managing cloud infrastructure, letting users generate Terraform-based infrastructure from natural language, run cost and security reviews, and deploy via CI/CD. It supports multiple cloud providers (AWS and Sakura Cloud, with Azure, GCP, and Oracle Cloud planned), integrates with Slack, and includes learning content aimed at users without infrastructure expertise.</parameter> <parameter name="founders">[]

1 investor

RISE Chain is a high-speed Ethereum Layer 2 blockchain offering roughly 1ms latency and over 50K TPS through a continuous block pipeline and preconfirmations. It provides native orderbooks (via MarketCore) and shared liquidity as EVM primitives, targeting onchain financial applications and trading.

1 investor

Rivet is a visual editor that lets product designers make UI changes and commit them directly to code, reducing the need for designer-engineer collaboration.

1 investor

Rivet provides infrastructure for AI agents and realtime applications, offering stateful compute primitives called Actors that run in Node.js or Bun backends. The platform supports deployment options ranging from local libraries to fully managed cloud services or self-hosted environments with compliance features like air-gapped and on-premises support.

1 investor

Roark builds a quality testing platform for voice AI agents using audio-based evaluation models. The platform allows teams to simulate calls before launch, score production conversations on audio, and validate fixes before customer deployment in healthcare, finance, insurance and other regulated industries.

1 investor

Robius is a software development company that builds custom software for both early-stage startups with limited budgets and MVPs and larger companies with defined project requirements. It provides cost estimation, project documentation, and delivery within agreed timelines and budgets.

1 investor

Iron, a MoonPay company, provides API-first stablecoin payment infrastructure including virtual accounts, fiat-to-stablecoin on/offramps, global payouts, checkout, and OTC services. It serves enterprises, PSPs, wallets, fintechs, exchanges, and treasuries building stablecoin-based payment flows.

1 investor