Developer Tools Startups
4,617 companies tagged Developer Tools, with their investors and founders.
Quarter20 provides software for engineering documentation that auto-updates with design changes and uses a tagging system to turn documents into a queryable database. It targets teams building complex hardware and robotic systems, from industrial equipment to medical devices.
2 investors
QuestDB is an open-source time-series database designed for high-performance analytics and low-latency querying of temporal data. It serves financial institutions, trading platforms, and enterprises requiring real-time data processing.
2 investors
Quickbase offers a no-code/low-code platform for building connected applications that automate manual processes, manage projects, resources, and workflows, and link office and field teams. It targets operations teams looking to replace spreadsheets and disconnected systems with custom apps.
2 investors
Quokka provides mobile app security analysis for iOS and Android applications without requiring source code, detecting vulnerabilities, privacy risks, and compliance issues in apps and their supply chains. The platform is designed for enterprises to identify and remediate zero-day exploits across their mobile app ecosystems.
2 investors
RackN is a technology company presenting its core values and workplace culture on this page. The page describes principles such as long-term systems thinking, ownership, and collaboration but does not detail the company's specific products or services.
2 investors
Radix is a Web3 and DeFi platform built around a purpose-built "Digital Asset Engine," offering the Scrypto asset-oriented programming language and Radix Engine for developers to build decentralized applications, plus the Radix Wallet with human-readable transactions and multi-factor account recovery for end users. It targets both DeFi developers and mainstream crypto users.
2 investors
Raftt provides on-demand ephemeral Kubernetes development environments with hot reload, remote container debugging, and real-time collaboration. It is a developer tooling product aimed at software engineering teams working with containerized applications.
2 investors
Ragie provides a context engine with APIs for document indexing and retrieval, parsing (agentic OCR), and entity extraction to supply AI agents, assistants, and applications with accurate context. It offers a managed RAG pipeline with hybrid search, native data connectors, and an MCP server, serving teams from startups to enterprises across sectors such as legal, productivity, and sales.
2 investors
Railway is a cloud deployment platform that connects to a code repository and handles build, configuration, networking (SSL, load balancing, public/private endpoints), scaling, and observability. It targets software development teams looking to deploy and monitor applications without managing infrastructure.
2 investors
rakam is a product analytics tool that connects directly to a company's data warehouse and dbt project, converting user-interface questions into SQL to provide ad-hoc reporting features such as segmentation, funnel, retention, and flow analysis. It serves marketing, finance, product, and data teams, offering verticalized interfaces so non-technical users can explore event data without relying on technical teams.
2 investors
Ramen VR is a game development studio that previously created the VR game Zenith: The Last City for Steam and Oculus Quest, and is now building an unannounced game along with developer tools such as Aura. The company focuses on solving problems in game development.
2 investors
Random Labs develops Slate, an autonomous coding agent that can engage in extended work sessions on complex programming tasks.
2 investors
ReadyAI provides structured, machine-readable intelligence extracted from websites, transcripts, and documentation for AI agents and applications. The platform indexes web content into standardized formats and offers data enrichment services for developers, researchers, and enterprises.
2 investors
Regatta is building a database designed for AI agents and modern applications, leveraging foundational expertise in distributed systems and data infrastructure.
2 investors
Regression Games is building products at the intersection of gaming and technology, drawing on expertise in machine learning, infrastructure, frontend design, and game development. The company is led by a small engineering team with backgrounds in software and AI.
2 investors
Relace builds specialized small language models and infrastructure for coding tasks including retrieval, merging, and code generation, serving software development teams looking to accelerate development and reduce errors in engineering workflows.
2 investors
Release creates isolated staging environments for each pull request, allowing engineering teams to test code changes in parallel rather than sharing a single shared staging instance.
2 investors
Remyx provides a decision layer that ranks candidate improvements for AI coding agents against a team's codebase, constraints, and past results, then recommends the highest-confidence change or explains why to hold. It integrates via a scoped GitHub App and turns evaluation results, experiment history, and production outcomes into a shared system for prioritizing ML and code improvements.
2 investors
Reprompt builds a digital replica of Earth using AI and location technology. The company serves customers seeking advanced geographic and spatial intelligence capabilities.
2 investors
Request Network is an open-source, non-custodial payment protocol that lets businesses accept and send stablecoin and crypto payments across multiple EVM chains and Tron, with funds moving directly wallet-to-wallet and a transaction reference attached for reconciliation. It serves crypto-native businesses such as iGaming operators, SaaS companies, and payment service providers via an API, dashboard, and payment links, charging fees starting at 0.25% per transaction.
2 investors
Requesty is an AI gateway that routes requests across 600+ LLM models with intelligent routing, cost optimization, and real-time analytics. It provides observability, caching, failover, governance, and PII detection for enterprises managing multiple AI providers.
2 investors
Rerun is building a multimodal data stack for embodied AI, providing tools used by companies developing AI applications in the physical world. It offers developer tooling for handling and visualizing multimodal data used in robotics and physical-world AI.
2 investors
Resend provides an email sending platform for developers to build and send modern email templates that reach the inbox reliably. The platform addresses the technical challenges of email delivery across different email clients.
2 investors
Resonate is an open-source (Apache 2.0) implementation of the Distributed Async Await / durable execution protocol, letting developers write ordinary async functions that run reliably with retries, timeouts, and crash recovery handled automatically. It runs as a single binary alongside a developer's existing stack, storing state in their own Postgres or NATS, aimed at engineers building production distributed systems.
2 investors