Developer Tools Startups

LAYER builds WAVS, a framework for creating full-stack, multichain decentralized protocols that combine off-chain compute with on-chain verification. It provides developers with event-driven automated workflows to read from on-chain or off-chain data sources, run verifiable compute, and write to any blockchain, supporting use cases like AI agents, oracles, prediction markets, and cross-chain bridges.

1 investor

LeadDev is a media and events company producing content, conference talks, panels, and research reports on engineering leadership. It serves engineering managers, staff and principal engineers, and directors/VPs/CTOs, and runs the LDX3 festival in New York.

1 investor

Lean Solutions Group is a solutions provider that combines skilled human operators with AI-powered automation to handle business operations including scheduling, customer support, and back-office tasks. The company serves clients across industries to optimize workflows and reduce operational costs.

1 investor

1 investor

Leantime is an open-source project management system that allows users to install and run the software on their own servers. It provides task management, timeline/milestone views, time tracking, and reporting features for teams managing projects.

1 investor

LeanXcale is a SQL database designed for real-time analytics and scalable operational workloads with linear horizontal scalability from single servers to hundreds of nodes. The database serves enterprises and developers requiring high-ingestion, batch processing, and real-time aggregation capabilities.

1 investor

Leaping identifies the underlying causes of software bugs and automatically generates code fixes that have been tested, helping companies reduce the cost and customer impact of defects.

1 investor

Leen builds developer tools for security teams to improve their workflow and capabilities. The company aims to become a leading devtools provider focused specifically on the security market.

1 investor

Lekko built dynamic software configuration tools that let companies change application behavior in code without rebuilds or feature-flag issues, based on a system its team developed at Uber and Meta. The company and its engineering team have been acquired by Rippling.

1 investor

Lemony.ai offers CascadeFlow, a runtime that scores each step of an AI agent across cost, latency, quality, budget, compliance, and energy, then enforces actions in-process with low overhead. It targets developers and teams building and running AI agents.

1 investor

Leonardo Mattar is an independent visual designer and front-end developer who builds custom websites for clients using Webflow.

1 investor

LeoTrace makes LeoPrevent, a security tool that runs inside AI coding agents and automatically fixes security flaws and nearby technical debt in the same turn the code is written, before they reach code review. It integrates with coding agents such as Claude Code, Codex, GitHub Copilot, Cursor, and Devin, and complements existing scanners rather than gating the pipeline.

1 investor

Leto provides an IPFS gateway that serves content to end-users while generating anonymous, open analytics on how IPFS objects are requested across the network. It offers a dashboard and an open Analytics API for querying usage data within the IPFS ecosystem.

1 investor

Levo provides a runtime security platform that integrates API and AI security directly into the software development lifecycle, helping enterprises detect and prevent vulnerabilities before code reaches production. The platform serves large enterprises and regulated organizations across North America and India.

1 investor

LexIQ provides an LLM-agnostic architecture that integrates with multiple large language models and specialized models from various providers, enabling users to select and optimize their preferred models for specific use cases.

1 investor

Leyr provides API integration solutions for healthcare organizations in regulated environments, drawing on expertise from medical practice and fintech infrastructure.

1 investor

LigaAI is an AI-assisted R&D collaboration platform that connects engineering work with business goals, automating progress tracking, requirement management, and delivery planning. It integrates with DevOps and messaging tools to centralize user feedback and visualize team delivery metrics for product and development teams.

1 investor

Light Table is an interactive development environment (IDE) that lets programmers modify running programs in real time and embed content such as websites and games, with the aim of providing immediate feedback on how code behaves. The company's related effort, Eve, is described as a way to make computation accessible to a broader audience.

1 investor

Lightbend offers Akka, a platform for building agentic AI systems and applications that run within defined geographic, security, and infrastructure boundaries. It serves enterprises across industries such as insurance, finance, streaming, food delivery, agriculture, and payments.

1 investor

Lightboard provides on-demand design services through a vetted network of experienced designers and creative professionals. The company serves teams needing additional design capacity or full design team coverage for projects.

1 investor

Nine Sixteen provides pragmatic AI consulting and advisory services from former technical founders, helping companies explore and implement AI-first product strategies. They work across product development, workflow optimization, human-in-the-loop systems, and agentic platforms to integrate AI throughout the development lifecycle.

1 investor

LightBox builds applications for Android smartphones. Its main product, Lightbox Photos, links the phone's camera to social networking services so users can capture and share images directly.

1 investor

Lighthouse provides decentralized file storage built on IPFS and networks like Filecoin and Walrus, with encryption, token-gated access, and dedicated IPFS gateways. It offers an SDK and CLI for developers as well as a web application for individuals and enterprises to store, retrieve, and share files.

1 investor

Lightmeter helps B2B sales and marketing teams send emails at scale by providing email delivery services and mailserver automation. The company focuses on making the decentralized email network accessible to entrepreneurs through open standards and open source technology.

1 investor