Developer Tools Startups

Probabl offers Skore, a tool that validates AI-generated scikit-learn machine learning pipelines by detecting data leakage, overfitting, and structural errors, and recommending appropriate metrics. It targets developers and data scientists using AI coding tools such as Pi, Cursor, and ChatGPT to generate code.

2 investors

Prompt-Driven Development is an approach that elevates prompt files to be the primary source artifact for software development, with code regenerated from prompts as needed to reduce maintenance costs. It targets developers seeking to reduce the 80-90% of development costs typically spent on code maintenance.

2 investors

Promptfoo develops security and testing tools for generative AI applications, serving engineering teams building AI products at scale.

2 investors

Proof of Play provides a platform for building and deploying high-performance decentralized applications and games on blockchain networks. The platform offers serverless infrastructure, composable development tools, and cross-chain interoperability to enable developers to launch onchain apps and games at scale.

2 investors

PropelAuth provides authentication and user management infrastructure for developers building B2B and B2C applications. The platform offers integrated tools for user identity, security, and relationship management to streamline the developer experience.

2 investors

Propexo builds data infrastructure for multifamily real estate, connecting property management systems and proptech tools through a centralized data warehouse and unified API. The platform serves real estate operators and developers who need to consolidate and access fragmented property data across multiple systems.

2 investors

ProsperOps provides a FinOps automation platform that continuously optimizes cloud commitments such as AWS Savings Plans and Reserved Instances to maximize discounts while limiting lock-in risk. It serves enterprise FinOps and engineering teams across AWS, Google Cloud, and Microsoft Azure.

2 investors

Proxima provides a data layer for blockchains and decentralized systems, letting developers stream, index, and build on blockchain data with cryptographic proofs. It supports use cases such as cross-chain DEXes, multi-chain indexing, real-time analytics, dynamic NFT metadata, and trustless oracles, sourcing data from chains like Ethereum, Polygon, and Binance Smart Chain.

2 investors

Pryon builds tools for enterprise customers to create and deploy agents powered by OpenAI's language models, focusing on the underlying components and architecture rather than simple assembly-line approaches.

2 investors

Upflowy (Psyke) offers a low-code/no-code tool for building and optimizing signup flows and web conversion funnels. It serves marketers and product teams looking to improve conversion rates.

2 investors

Pulse Labs provides AI-powered user research and feedback analysis tools for product teams to test features, gather insights, and make data-driven product decisions. The platform serves software and product development organizations across industries.

2 investors

PuppyGraph is a zero-ETL graph analytics engine that lets data teams query existing relational data stores as a unified graph model without a separate graph database or data migration. It is used for applications like fraud detection, cybersecurity, supply chain optimization, and life sciences analytics, and offers a free Developer Edition and a production Enterprise Edition deployable via Docker or AWS AMI.

2 investors

pyannote.ai provides speaker diarization, speaker identification, and transcription sync through a REST API and Python SDK, built on the open-source pyannote.audio library. Its models handle noisy, multilingual, and overlapping speech with sub-150ms latency and run on cloud, on-premises, or edge environments for voice AI pipelines.

2 investors

Pydantic offers an end-to-end AI engineering stack built around its open-source Python library, including Pydantic Validation, Pydantic AI (an agent framework), Pydantic Logfire (AI observability), and Pydantic Evals for testing LLM behavior. It targets software developers building type-safe AI applications across Python, TypeScript, Rust, and Go, with cloud or self-hosted deployment options.

2 investors

Pynt is an API security platform that provides API discovery, security testing, LLM API testing, and an MCP runtime firewall to detect business-logic vulnerabilities and shadow endpoints. It targets enterprise application security teams and integrates with CI/CD pipelines and tools like Postman, Burp Suite, and Selenium.

2 investors

PYOR provides blockchain data analytics for crypto protocols, DAOs, and institutional investors, offering custom dashboards, risk and governance insights, and developer tools. It builds data solutions covering ecosystems such as Avalanche, Arbitrum, Compound Finance, ICP, and Livepeer to support data-driven decisions.

2 investors

Grafana Pyroscope is an open source continuous profiling system that aggregates performance data and enables application teams to identify resource usage and performance bottlenecks down to the source code level. It integrates with Grafana and correlates profiling data with metrics, logs, and traces for comprehensive application observability.

2 investors

QC Design builds Plaquette, on-premises software for quantum hardware teams to design, simulate, and optimize logical qubits and fault-tolerance architectures under realistic hardware imperfections. It supports major quantum hardware platforms including superconducting qubits, neutral atoms, trapped ions, and photonic systems, offering error-correction code libraries, error models, decoders, and multiple simulation backends.

2 investors

QCentroid provides a platform for adopting quantum computing that enables organizations to integrate, deploy, and scale quantum solutions across their business. The platform offers end-to-end quantum workflow capabilities, from use case ideation through execution, with a qubit-agnostic approach that connects to multiple quantum hardware providers and algorithms.

2 investors

Qoitech makes the Otii product suite—hardware instruments and software for embedded engineers to measure power consumption, profile batteries, and estimate runtime in low-power IoT and electronics devices. The tools enable power optimization, battery validation, and automated testing across firmware builds.

2 investors

QPoint provides an endpoint security tool (Qcontrol) that installs as a single binary to discover AI agents running on a machine and capture their file access, tool calls, network requests, and process execution in real time. It offers audit trails and policy controls (via plugins) to observe, block, or rewrite agent actions, feeding events into existing SIEM, SOC, and compliance tooling for security teams.

2 investors

QualGent builds AI-native quality infrastructure for software testing and verification, enabling enterprises to validate AI-generated code and systems at scale with deterministic confidence. The platform uses multi-agent AI reasoning to plan, execute, and evaluate software behavior in production environments.

2 investors

Quali provides a self-service platform that lets technology teams develop, test, and deploy across multiple cloud environments while managing infrastructure complexity. It serves engineering and IT teams working with cloud infrastructure.

2 investors

Quantstruct automates software documentation creation and maintenance by integrating with development tools, codebase events, and support channels to generate and update technical documentation. It serves software development teams and organizations that need to keep their documentation current across multiple tools and workflows.

2 investors