Developer Tools Startups

Manufact provides a platform and open-source SDK for developers to build, test, and deploy MCP (Model Context Protocol) applications and servers for AI agents and chat interfaces like ChatGPT and Claude. The platform includes hosting, debugging tools, analytics, and publishing checks to help teams get their MCP apps to marketplace stores.

3 investors

Manus is an AI agent platform that automates complex workflows and business processes for teams without requiring additional headcount. It enables users to build full-stack applications with automated coding, database, deployment, and payment integration.

3 investors

Marlin is a protocol offering TEE-based coprocessors for decentralized compute, allowing blockchain computations to be delegated to offchain microservices with proofs and attestations verified onchain. Its products include Oyster (serverless coprocessors and confidential VMs) and Kalypso (a ZK proof marketplace), serving developers building dApps, oracles, decentralized exchanges and frontends.

3 investors

Martian is an AI research lab focused on understanding machine intelligence, working on model interpretability, feature geometry, and the mathematics of what large language models learn. It commercializes its interpretability research through products that scale with LLM usage.

3 investors

Massive is a web access API that routes HTTP requests through millions of opted-in volunteer devices in 195+ countries, letting AI agents, models, and data pipelines fetch live web content, render JavaScript-heavy pages, and retrieve structured search results with geo-targeting. It serves developers and enterprise teams building AI and data-collection workflows.

3 investors

Mattermost is a secure team collaboration platform designed to complement Microsoft Teams and Microsoft 365, providing on-premises or private cloud deployment with advanced customization, data control, and integration capabilities for mission-critical and highly regulated environments.

3 investors

Maya Labs builds AI systems that can generate and modify code autonomously, enabling non-programmers to create software solutions. The company focuses on AI-driven program synthesis and self-programming machines.

3 investors

Medplum provides a data infrastructure and interoperability platform for developers building healthcare products and services. The platform offers secure, compliant infrastructure to enable healthcare innovators to develop applications more efficiently.

3 investors

Memfault provides an embedded observability platform for teams building IoT and edge devices, offering crash reporting, cloud-based software delivery, and performance monitoring. The platform allows firmware engineers to debug and manage connected device fleets at scale.

3 investors

Memori builds an LLM-agnostic memory infrastructure layer that captures agent execution and conversations, classifying them into structured, persistent state (facts, preferences, rules, and summaries) for AI agents in production. It offers targeted recall, semantic search, memory graphs, analytics, and a hosted Memori Cloud, serving developers and enterprises building AI agent workflows.

3 investors

Mend.io provides visibility and governance tools for identifying and managing shadow AI and software supply chain risks in organizations. The platform helps development teams and security practitioners secure AI and software dependencies across their systems.

3 investors

Meroxa builds real-time data integration and streaming tools to help organizations liberate data from silos and create data-driven applications. The platform serves enterprise organizations seeking to access, move, and process real-time data.

3 investors

Mesmer builds an operating system for engineering teams that uses AI and ground-truth data from code and tickets to provide visibility into engineering work and automate management tasks. The product serves engineering leaders and CTOs seeking to understand organizational productivity, identify bottlenecks, and capture AI-related productivity gains.

3 investors

Mesta builds payment infrastructure that combines fiat currencies and stablecoins into one system for moving money across currencies, blockchains, and borders. It targets businesses making cross-border and B2B payments, with a focus on compliance and API-based money operations.

3 investors

Metaschool offers hands-on, project-based learning tracks and templates for developers to learn Web3, blockchain, and AI development by building real projects. Its courses cover technologies such as OpenAI APIs, NextJS, and blockchain ecosystems including Aptos, Sui, MANTRA, Core, and Fuel Network.

3 investors

Meticulous automatically detects regressions in web applications by replaying user sessions at scale, helping front-end developers build more reliable software. The platform uses distributed replay systems and algorithms to identify code path coverage and differentiate meaningful test sessions.

3 investors

Metis builds a post-training and continual-learning layer for enterprise agents, enabling autonomous systems to operate reliably on real tools and workflows. Their product Insight uses first-party data to train agents through reinforcement learning, allowing them to improve over time while remaining observable and safe.

3 investors

Metorial provides a platform for enterprises to connect AI agents and employees to 1,000+ integrations and internal tools with built-in governance, access control, and security. The platform enables organizations to deploy customer-facing agents, internal assistants, and AI workforces while maintaining control over who can access which tools and systems.

3 investors

Meya offers a chatbot platform for building, developing, and deploying conversational apps across Android, iOS, and web. It provides tools to connect systems, script flows, and code custom components, with one-click deployment and developer support.

3 investors

Mimica provides AI-powered process mining and mapping software that analyzes user interactions to automatically generate process maps and identify automation opportunities for large enterprises. The platform helps organizations visualize workflows and improve operational efficiency.

3 investors

Mio provides interoperability across collaboration platforms, enabling users to send messages, manage identities, share files, and initiate meetings across different systems.

3 investors

ModelML builds machine learning solutions for the financial services industry, leveraging expertise from senior professionals across banking and investment management.

3 investors

Modelcode builds Morph, an AI system for large-scale code modernization that plans, executes, and verifies migrations of production codebases through reviewable milestones, automated code review, and functional verification. It serves engineering teams handling language upgrades, framework migrations, and architecture modernization across industries such as healthcare, aerospace and defense, enterprise SaaS, and e-commerce.

3 investors

Moderne provides a unified source of truth for enterprise codebases, enabling teams to query and manage code across portfolios ranging from single repositories to 100,000 codebases. The platform serves large enterprises managing complex software infrastructure.

3 investors