Fundraising Fox

Developer Tools Startups

4,614 companies tagged Developer Tools, with their investors and founders.

Not Diamond

Not Diamond provides an intelligent model router for coding agents that predicts which language model to use for each input, aiming to reduce inference costs while maintaining accuracy. It targets engineering teams and AI developers, integrating with existing model gateways and harnesses through a stack-agnostic API.

6 investors

Oasisprotocol

Oasis provides infrastructure for building private and verifiable applications using hardware-secured enclaves that keep data encrypted and produce cryptographic proofs of execution. It offers confidential smart contracts with EVM compatibility, an offchain confidential compute framework with onchain attestation, and policy-enforced encrypted vaults, targeting developers building crypto and DeFi applications such as trading bots, MEV-resistant swaps, and tokenized securities.

6 investors

Observe

Observe provides observability software that helps engineers troubleshoot distributed applications, consolidating logs, metrics, and traces into a single platform built on Snowflake. The company serves enterprise software engineering teams managing complex infrastructure and applications.

6 investors

Onlook

Onlook builds developer and design tools that bridge the gap between creative teams and implementation, using AI to enhance the creative process.

6 investors

Paragon

Paragon provides integration infrastructure that enables B2B and AI product companies to quickly ship customer-facing integrations, including data ingestion, API connectors, and agent actions. The platform offers pre-built connectors, custom connector building, and orchestration tools for third-party app interactions.

6 investors

Pigeonly

Pigeonly provides technology products that enable families and friends to communicate affordably with incarcerated individuals through low-cost phone calls, photo sharing, letters, postcards, and greeting cards. The company also operates Pigeonly Corrections, which works with correctional facilities to screen incoming mail for contraband while preserving family communication channels.

6 investors

Pinecone

Pinecone provides a vector database and knowledge engine that enables AI applications with semantic search and retrieval capabilities. It serves developers and enterprises building AI applications across industries.

6 investors

Plexe

Plexe provides infrastructure for deploying machine learning models to production, serving millions of inferences daily. The platform enables teams to move from development to production in weeks rather than quarters.

6 investors

Portainer

Portainer builds a container management platform that simplifies deployment and administration of containerized applications. The platform serves developers and operations teams across organizations of all sizes.

6 investors

Prezent

Prezent is an enterprise communication and presentation productivity platform powered by AI that helps teams increase communication effectiveness and reduce presentation production time and costs. The platform serves large organizations in the F2000.

6 investors

Probely

Probely is a security testing platform that discovers APIs and web applications, finds their vulnerabilities, prioritizes them, and provides guidance on how to fix them. It serves development and security teams that need to assess the security of their web apps and APIs.

6 investors

Project Discovery

ProjectDiscovery offers Neo, an autonomous AI-powered security testing platform that continuously scans web applications, APIs, and cloud infrastructure to identify and verify vulnerabilities with high accuracy and minimal false positives.

6 investors

QA Wolf

QA Wolf builds an AI-powered testing platform that autonomously explores applications, writes test code, and executes tests in parallel for web, mobile, and native apps. The platform is designed for development teams to accelerate their QA cycles and enable faster shipping of software.

6 investors

Quicknode

Quicknode provides blockchain infrastructure services that enable developers and enterprises to build and deploy decentralized applications across multiple blockchains. The platform offers fast, reliable node access and developer tools for Web3 projects ranging from wallets and Layer 1 protocols to gaming and fintech applications.

6 investors

Quiltt

Quiltt provides fintech infrastructure that connects builders to financial data aggregators and enrichment providers through a single integration. It targets fintech companies and developers working in open banking and personal finance.

6 investors

Rafay

Rafay builds infrastructure orchestration and workflow automation software for self-service compute consumption across GPU and CPU environments. The platform serves sovereign AI clouds, cloud service providers, and large enterprises seeking better kubernetes and AI workload management.

6 investors

Rasa

Rasa builds a conversational AI platform that extends large language models with business logic, enabling enterprises to develop AI agents that handle high-volume interactions securely. The platform is designed for organizations that need reliable automation for customer and business interactions.

6 investors

Recall.ai

Recall.ai provides meeting recording and transcription APIs and SDKs that capture individual speaker audio for accurate, multi-speaker transcripts. The platform serves developers and enterprises building meeting intelligence, legal tech, and AI assistant features into their products.

6 investors

Red Canary

Atomic Red Team is an open source, community-maintained library of small security tests mapped to the MITRE ATT&CK framework, letting security teams validate their ability to detect threats across Windows, macOS, Linux, and cloud environments. It is developed by Red Canary and includes tools such as the PowerShell-based Invoke-Atomic execution framework and Atomic Test Harnesses.

6 investors

Reducto

Reducto provides document processing APIs that parse, classify, extract, and edit data from documents at enterprise scale. The platform combines OCR and vision language models to transform unstructured documents into structured data for AI teams across finance, healthcare, legal, and other industries.

6 investors

Rive

Rive is a design and animation platform where creators build interactive experiences that run natively across web, mobile apps, games, and devices using an open-source runtime and GPU-accelerated vector graphics engine. It serves designers, animators, and developers who want to create and ship interactive content without handoffs between design and code.

6 investors

Roboflow

Roboflow provides tools for developers to build and deploy computer vision applications, including image annotation, model benchmarking, and dataset management. The platform serves software engineers and enterprises who need to create vision-based applications.

6 investors

Sanity

Sanity provides a content operations platform built on a structured content database where JSON documents and code-defined schemas power web, mobile, and AI agent applications through a single API. It offers a customizable content studio, programmable automation, content agents, and enterprise governance for teams managing content across multiple brands and channels.

6 investors

Scylladb

ScyllaDB is a NoSQL database built for data-intensive applications requiring high throughput and predictable low latency, powering real-time AI systems at billion-scale data volumes.

6 investors

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