Developer Tools Startups

Qiita provides platforms for engineers to record, share, and collaborate on technical knowledge and documentation. The company operates in the developer tools and knowledge-sharing space.

1 investor

Qlerify provides AI-guided development process guidance and stakeholder alignment tools to help teams understand workflows and identify improvements.

1 investor

Qodex is an autonomous AI agent that reviews code changes and runs API, UI, and security tests against a company's live application, turning filed bugs into runnable scenarios. It targets software engineering and QA teams, posting findings and status checks on pull requests using standard Playwright and HTTP scenarios that customers own.

1 investor

Qoral is an AI-native operating layer for game development studios that unifies data across tools like Jira, Perforce, pull requests, builds, and Slack into a single view. It surfaces delivery risk, regression patterns, and coordination gaps while automating repetitive coordination work for engineering leaders, producers, technical directors, and studio leadership.

1 investor

QPerfect develops quantum emulation software and fault-tolerant quantum control tools (MIMIQ and QLU) that bridge the gap between current quantum simulators and real quantum computers. The company serves researchers and organizations deploying quantum computing systems across industries.

1 investor

Qt Group provides tools spanning UI design, software development, quality assurance, and deployment to help its customers improve productivity across the product development process. The company serves software and application developers with cross-platform development software.

1 investor

Quack AI offers a VSCode extension that lets project maintainers define contribution guidelines and guides developers through the contribution flow inside their IDE, with analytics to identify and fix bottlenecks. It targets software development teams managing open-source or internal contribution workflows.

1 investor

Quacks was an AI-powered QA testing startup that built a computer-use agent ("taskagent") and a dashboard for automated software quality analytics and testing. The company has since shut down, and its assets were re-acquired by its former co-founder.

1 investor

Quality Match helps companies collect and manage machine learning training datasets for computer vision applications. The company serves automotive and medical imaging businesses requiring high-quality annotated data.

1 investor

QuantConnect operates an open-source platform for algorithmic and quantitative trading, giving self-directed investors and emerging funds access to research tools, datasets, brokerage integrations, and backtesting across multiple asset classes. Its LEAN engine serves as infrastructure for quant investment, supporting over 100 funds and billions in assets under management.

1 investor

RhymeQ offers RHYME, a tool that lets software developers build quantum applications in Python using their existing IDE and AI assistant, without requiring gate-level physics knowledge. It targets software developers working in quantum computing.

1 investor

QuarkXR provides a cloud-based platform for creating digital twins, enabling real-time 3D collaboration, and visualizing construction projects in immersive environments for architects, engineers, and construction teams. The platform supports import of BIM models from Revit and other sources, facilitating remote design reviews, progress tracking, and stakeholder engagement throughout the project lifecycle.

1 investor

Quash is an AI-powered QA platform that automates mobile app testing through natural language prompts, replacing manual and slow testing processes for development teams. The platform uses intelligence to execute test flows like a real user, reducing the time and manual effort required in quality assurance.

1 investor

Qubitra is building a marketplace platform that connects researchers, builders, and enterprises with vetted quantum applications, tools, and infrastructure to reduce barriers to quantum prototyping and accelerate validation of quantum use cases.

1 investor

Querier is a data integration and query platform that connects to multiple databases and APIs to manage data access and permissions. The service is designed for teams that need to query and audit data flows across various data sources.

1 investor

Query Vary provides a no-code platform for building workflows that connect software inputs to large language models and output integrations, enabling tasks like data extraction from transcripts, documentation chatbots, and form-to-report automation.

1 investor

QuestorAI is an application security tool that detects vulnerabilities in near real-time, prioritizes high-confidence issues, and proposes verified remediations for developer review and approval. It can autonomously handle the full detect-and-fix cycle within scope limits set by the user.

1 investor

Quetzal provides a platform for translating and internationalizing software products with context awareness and consistency, targeting engineering teams building global applications.

1 investor

Quickwit builds data infrastructure for search and analytics at scale, serving teams that need to process and query large volumes of structured data efficiently.

1 investor

Quikk is an integration partner that helps businesses and developers connect to financial providers and digital services across Africa through APIs, offering technical support and guidance to speed up integration cycles. It focuses on the East African/African financial services market.

1 investor

QuilrAI provides endpoint-level security for AI coding tools that run locally on developer machines, intercepting and governing file access, shell commands, context window contents, and secret exfiltration before they execute. The platform protects enterprises by installing as a lightweight system daemon that monitors Claude Code, Cursor, GitHub Copilot, and other agentic AI tools.

1 investor

Quine is a platform that matches developers to paid open-source contribution opportunities based on their skills and facilitates earning rewards through solving GitHub issues and building AI applications. It serves open-source developers and organizations looking to incentivize code contributions.

1 investor

Quint builds an executable specification language and tooling that turns a system's intended behavior into verifiable evidence, with an open-source language and a product called Quint Studio for validating behavior from design through production. It targets engineering teams working on correctness-critical systems such as AI infrastructure, blockchain/fintech protocols, and distributed cloud infrastructure.

1 investor

Red Hat provides container orchestration and virtualization software, including OpenShift, a platform for managing applications across hybrid cloud environments. The company serves enterprises needing to modernize infrastructure, migrate virtual machines, and consolidate containerized and traditional workloads on a unified platform.

1 investor