Developer Tools Startups

Curvenote builds an open-core platform for sharing and publishing scientific research with dynamic, interactive content rather than static PDFs, enabling researchers to preserve code, data, and reproducibility in their published work. The platform serves academic and research institutions globally and contributes to open-source science communities.

3 investors

Cybellum provides automated red team and vulnerability detection software that identifies and validates coding weaknesses in proprietary and third-party code to reduce security risks across product lines. The platform helps manufacturers and enterprises scale security testing, reduce false positives through dynamic validation, and ensure products meet regulatory compliance before market release.

3 investors

Cybret builds a security engine that detects complex business logic vulnerabilities in software, focusing on unintended interactions across API endpoints, permissions, states, and data paths that conventional tools and LLM-based scanners miss. It combines a custom engine for breadth with frontier AI models for depth to find and label vulnerabilities that arise from how components interact across a wider system.

3 investors

Cycle Labs offers Cycle®, an end-to-end test automation platform that uses a human-readable scripting language (CycleScript) to automate regression, volume, and load testing across enterprise supply chain systems such as ERP, Warehouse Management, and Order Management systems. It provides prebuilt test libraries for platforms like Blue Yonder and Infios WMS and serves enterprises including Fortune 500 companies across industries such as food distribution and automotive manufacturing.

3 investors

Dagger is a programmable CI/CD engine that runs pipelines inside standard OCI containers, letting developers define their pipelines as code in their application's programming language via SDKs. The same pipeline can run locally, on a CI runner, or on any container hosting service, with built-in caching and Docker ecosystem compatibility.

3 investors

DAGWorks provides open-source Python frameworks—Hamilton for ML and data pipelines and Burr for AI agent applications—that include built-in observability, lineage tracking, and versioning to help developers monitor and maintain AI systems in production.

3 investors

Dappier operates an agent storefront that publishes prices, payment instructions, and setup so AI agents can purchase autonomously or with human approval. The storefront supports multiple payment methods, lets agents set up a payment method instantly without signup, and handles payments directly rather than requiring API calls.

3 investors

Darklang is a programming language and development platform designed to build CLIs and cloud applications with minimal complexity. It eliminates traditional development infrastructure requirements like build systems, dependency management, deployment pipelines, and database configuration.

3 investors

Data Mechanics built a managed data engineering platform running Apache Spark on Kubernetes. The company was acquired by NetApp in 2021 and integrated into the Spot.io portfolio as "Ocean for Apache Spark".

3 investors

Dataform provides tooling for data teams to build, version-control, and deploy SQL data pipelines inside cloud data warehouses such as Snowflake, BigQuery, and Redshift. The company was acquired by Google Cloud in December 2020.

3 investors

Datature provides an enterprise computer vision platform that helps organizations turn visual data into actionable insights, aimed at improving operational efficiency and reducing costs. It serves industry customers seeking to build and deploy AI-based image and video analysis.

3 investors

DBOS provides a durable workflow platform with observability and management tooling, letting developers view, cancel, resume, fork, and export application workflows through its Conductor console. It targets software teams building fault-tolerant applications that need to trace and recover long-running or failed workflow executions.

3 investors

DBtune offers agentic AI that automatically tunes PostgreSQL databases to improve query performance and transactions per second while reducing cloud and infrastructure costs. It targets teams managing PostgreSQL databases seeking to lower operational expenses and free up engineering resources.

3 investors

decent.land builds onchain data infrastructure — an "onchain data center" for storing, verifying, and computing with blockchain data at scale, secured by Arweave and HyperBEAM. It runs HyperBEAM nodes and custom devices and offers tools such as file sharing and a cloud drive with optional permanence for Web3 developers.

3 investors

MyDecisive builds SmartHub, a real-time observability and telemetry control platform that captures critical bottlenecks, filters out healthy-data noise, redacts PII at the source, and automates incident-response workflows to reduce MTTR. It targets engineering and operations teams managing their monitoring stacks and observability budgets.

3 investors

Deck provides developer infrastructure for building computer-use AI agents that authenticate as end users, operate web apps, desktop, and legacy software through real interfaces, and return structured results. It includes a credential vault, built-in authentication handling MFA and CAPTCHA, isolated sandboxes for parallel agents, and a console and API for developers.

3 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.

3 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.

3 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.

3 investors

DeepWeave builds Loom, an AI-native optimization platform that augments the backend (physical) design stage of chip design, targeting power, performance, area, and yield through design-technology co-optimization within existing EDA flows. It serves semiconductor design teams and fabless companies and works alongside their existing toolchains and PDKs, with design partnerships including GlobalFoundries.

3 investors

Definity builds agentic AI capabilities for data engineering teams to design, operate, and manage data pipelines and platforms at scale. It targets enterprise data infrastructure and platform teams.

3 investors

Delphinus Lab builds ZKWASM, a zero-knowledge proof system that compiles WebAssembly application logic into provable computations, and operates zkwasmhub for hosting ZKWASM decentralized applications. It targets developers building provable dapps and games on blockchain infrastructure.

3 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.

3 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.

3 investors