Developer Tools Startups

Mason develops AI tools to help draft code-compliant building blueprints, targeting architects and construction professionals. The platform automates compliance checking and blueprint generation using machine learning.

1 investor

Mathpix develops AI-powered document conversion technology that recognizes handwritten equations, tables, chemical structures, and multilingual text. The platform serves millions of individual users and thousands of enterprises needing to digitize and make documents searchable.

1 investor

Maxxwell is an orchestration tool for developers running many parallel AI coding sessions (such as Claude Code and Codex), consolidating them into one window and running a "conductor" session that monitors each lane, keeps stalled ones on track, and surfaces only the events that need human decisions. It runs locally with no sign-up or server.

1 investor

MCP Manager builds a gateway to make Model Context Protocol ready for production and enterprise deployment. The company serves organizations implementing AI agents by providing infrastructure and integration expertise.

1 investor

MEA is a full-service creative agency that develops websites, mobile applications, and digital experiences for enterprise and government clients. The firm specializes in omnichannel customer experience design, strategic marketing, branding, and integrated digital services.

1 investor

Mechadoc translates hardware and software regulatory requirements into technical specifications for engineers to implement, enabling product compliance across multiple regions and industries.

1 investor

Mechanize builds simulated environments and evaluation benchmarks for training and testing frontier coding agents on software engineering tasks such as building features, deploying applications, and debugging code. The company uses these environments as reinforcement learning signals, with a long-term aim of automating knowledge work across the economy.

1 investor

Andy is an AI software-delivery agent that takes a one-line request through requirements, planning, coding, review, and release inside a single thread, opening pull requests while people retain decision-making control. It integrates with GitHub and Slack and is aimed at product and engineering teams.

1 investor

Meetstream.ai offers a single API for deploying meeting bots that join, record, transcribe, and stream real-time data from Zoom, Google Meet, and Microsoft Teams. It targets developers and teams building AI-powered meeting agents, handling the recording and integration layer so they can focus on building intelligence on top.

1 investor

Melder is an AI-powered Excel assistant that generates formulas, creates charts and visualizations, and cleans data automatically. It serves business professionals and analysts who work with spreadsheets and financial data.

1 investor

Meltano is an open-source ETL platform that lets data teams build and run data pipelines across databases, files, SaaS tools, and APIs, with 600+ pre-built connectors and code-based version control. It integrates with dbt for transformation and orchestration tools like Airflow and Dagster, targeting data teams managing data movement at cloud scale.

1 investor

Memberstack is a membership platform that enables developers to add user accounts and payment processing to custom applications built on Webflow. The service is used by builders to launch membership sites and gated content without coding.

1 investor

Membrane builds an AI-powered integration platform that enables software products to automatically connect with and adapt to other applications. The platform serves SaaS and AI product teams seeking to reduce integration complexity and backlogs.

1 investor

A software company building AI tools to make code creation accessible, founded by former leaders of DataFleets (a privacy-focused data platform acquired by LiveRamp for $100M+). The team brings expertise in large-scale language models, privacy-preserving computation, and enterprise software.

1 investor

Memo is a communication platform designed for professionals seeking focused, intentional messaging as an alternative to email and chat tools. It emphasizes high-value messages to reduce noise and help users reclaim time from constant notifications.

1 investor

Memorable develops technology that frames AI agent reasoning as a graph search problem.

1 investor

Memvid provides an enterprise AI platform that unifies company data across multiple tools into a unified knowledge layer, enabling AI-powered search and autonomous agents to automate workflows and business operations. The platform is designed for enterprises seeking to reduce operational costs and improve team productivity through intelligent automation.

1 investor

MergeBase develops a software composition analysis platform that identifies vulnerabilities in software supply chains, serving development teams throughout the full lifecycle from code creation to deployment and runtime.

1 investor

Mergent provided infrastructure for background jobs and workflow execution, offering high-reliability job scheduling and queueing services for developers. The company has been acquired by Resend as of 2025.

1 investor

Aviator provides a configurable merge queue for software engineering teams that manages pull requests at scale across monorepos and polyrepos, with features like PR batching, auto-rebasing, stacked changes, and AI-based flaky test detection. It supports Bazel builds and offers on-premise installation for regulated industries or GitHub Enterprise users.

1 investor

Merkle Manufactory is a software company that contributes to the Farcaster protocol and builds clients for it. Farcaster is a decentralized social networking protocol.

1 investor

Mesa provides a versioned, POSIX-compatible filesystem for AI agents, offering Git-like branching, version history, checkpoints, and human-in-the-loop reviews alongside a fast mountable filesystem. It targets developers building agent applications, supporting parallel agent swarms, large-file storage, and self-hosted enterprise deployments.

1 investor

D2iQ (formerly Mesosphere) provided Kubernetes automation and management technology for enterprise cloud-native and hybrid multicloud environments; it is now part of Nutanix, with its DKP product evolved into the Nutanix Kubernetes Platform (NKP). NKP unifies Kubernetes and Nutanix infrastructure to manage containers, VMs, and data across clouds.

1 investor

MetalSoft provides bare metal orchestration software that enables provisioning, re-provisioning, and management of servers across multiple vendors and generations as a service. The platform automates datacenter infrastructure operations with capabilities for lifecycle management, asset tracking, compliance enforcement, and AI-driven optimization.

1 investor