Developer Tools Startups
4,617 companies tagged Developer Tools, with their investors and founders.
DagsHub is a web platform built on open source tools for hosting, discovering, and collaborating on machine learning and data science projects. It provides version control and project management oriented toward data science teams and the open source ML/DS community.
2 investors
Dalus provides a collaborative systems engineering platform for hardware development teams to model complexity, manage requirements, and preserve engineering knowledge using SysML v2. The platform offers requirements management, system architecture design, analysis & verification, and AI-powered capabilities for engineering teams in regulated industries.
2 investors
DataArt is a software development company that provides AI and technology consulting and custom software engineering services to help clients advance their technology roadmaps.
2 investors
Datafree provides "reverse-billed" mobile connectivity that lets businesses make specific websites, apps, and platforms accessible to users without consuming their personal mobile data or airtime. It serves enterprises, educators, and organizations reaching frontline and blue-collar workforces, customers, and communities, with reverse billing across major South African networks.
2 investors
Datasaur provides AI data infrastructure that enables organizations to deploy AI systems while protecting sensitive data and maintaining privacy. The company serves regulated enterprises in healthcare, finance, and public services.
2 investors
DbVisualizer is a universal database client and SQL tool that connects to a wide range of relational and non-relational databases, offering an advanced SQL editor, data visualization, inline editing, exporting, Git version control, and an integrated AI assistant. It targets developers, analysts, and database professionals who work across multiple database platforms.
2 investors
Decawork provides an operating layer for IT teams to deploy, govern, and maintain AI agents running across a company's systems. It handles agent identity, scoped access to internal systems, spending caps, approval gates, and audit records so agents stay controlled from onboarding through audit.
2 investors
Deepchecks offers an enterprise LLM evaluation platform that unifies testing, observability, and monitoring for AI systems in production. It lets AI teams compare prompt/model/agent versions, set up auto-scoring pipelines, create LLM judges and datasets, and integrate LLM app testing into CI/CD.
2 investors
DeepSim provides a physics simulation platform that automates complex setup procedures to accelerate engineering design workflows. The platform uses GPU-accelerated computation to enable engineers to run simulations at unprecedented scale without sacrificing accuracy.
2 investors
DeepSky provides AI agents that handle research, drafting, content creation, and code development tasks for teams. The platform integrates with existing team workflows and tools, delivering live applications and artifacts that update as business needs change.
2 investors
Deeptrace is an AI-powered observability platform that automatically investigates production alerts by analyzing logs, traces, metrics, and code to identify root causes and reduce mean time to resolution.
2 investors
Deeptune builds simulation environments (training gyms) where AI agents can practice performing tasks like coding and spreadsheet work to improve performance. The platform serves frontier research labs and provides pre-built environments mimicking popular software like Slack and Salesforce.
2 investors
Defer is a managed background job processing platform for Node.js that allows developers to move computationally expensive tasks outside the request-response cycle. The service provides an operational dashboard and API designed to reduce setup overhead compared to piecing together open-source or cloud infrastructure solutions.
2 investors
Delineate builds AI agents that help pharmaceutical companies design clinical trials more quickly by converting existing trial research into specialized datasets, reducing the time scientists spend on trial preparation.
2 investors
Den builds AI agents that learn from individual conversations and can respond to messages on behalf of their owners via text or phone. The product targets individuals who want a digital representation that can handle communications when they are unavailable.
2 investors
Design Arena is a platform that evaluates and ranks AI models' design and UI generation capabilities through crowdsourced pairwise comparisons. Users vote on anonymized outputs from competing models to build community-driven leaderboards of AI performance.
2 investors
Designbase offers an interface design tool that converts visual designs into code, aimed at small teams and resource-constrained organizations.
2 investors
Designlab provides training and workshops for design and product teams, focusing on skills in AI, design systems, and emerging tools. The company delivers both cohort-based courses and live workshops tailored for UX/product professionals and cross-functional teams.
2 investors
Desktop Commander is a local AI agent application that executes tasks on a user's computer — opening folders, running commands, writing and editing files, connecting apps, and automating workflows from plain-English prompts. It works with any AI model, keeps files local, and is also available as an MCP server to extend existing AI clients.
2 investors
DEV is an online community where software developers share knowledge and help one another. It runs on Forem, an open-source platform for building communities, and has partnered with Major League Hacking (MLH).
2 investors
DevArmor connects to issue trackers to analyze development tickets in context, adding security recommendations and automatically generating threat models, controls, and guardrails for both human developers and AI agents. It targets application security teams in regulated, fast-moving industries such as financial services, fintech, and insurtech.
2 investors
Devii converts SQL databases (MySQL, PostgreSQL, Oracle, SQL Server, and others) into GraphQL APIs, automatically generating schemas, queries, mutations, CRUD operations, and policy-based access control. It targets developers and businesses building AI-ready applications as a managed backend infrastructure.
2 investors
DevZero is a Kubernetes platform that optimizes large-scale container environments through telemetry, machine learning, and automation to reduce resource waste and costs. It serves engineering teams and developers managing Kubernetes infrastructure.
2 investors
StreamingFast (dfuse) builds blockchain data infrastructure, including the Firehose extraction layer and Substreams, a parallelized streaming engine that lets developers write Rust modules to index and transform full blockchain histories and sink the data to destinations like PostgreSQL, Kafka, or subgraphs. Its open-source, chain-agnostic tools serve blockchain developers, indexers, and data analysts, and it is a core developer on The Graph.
2 investors