Developer Tools Startups

Provides the fabric that ties IoT devices together for better experiences.

2 investors

Simantic develops hardware simulation software that enables engineers and AI systems to test and debug embedded firmware without physical hardware constraints.

2 investors

Simli creates AI-powered facial avatars that can be customized to resemble users' faces, enabling personalized digital representations. The platform serves creators and businesses looking to generate realistic video content with custom avatars.

2 investors

Simperium builds a platform for syncing content across people and their devices, and released Simplenote as a showcase of the technology. The company was part of Y Combinator and has since been acquired.

2 investors

Site Bionics develops technology to enhance human experience by integrating physical-world tools with technology, allowing users to focus on human interactions. The company operates across multiple domains to improve how people interact with their physical environment.

2 investors

Siteimprove.ai offers an agentic platform for content compliance and performance, including its Search (SEO/AEO) product that makes website content discoverable and citable across search engines and AI answer engines like ChatGPT, Perplexity, and Google AI Overviews. It serves enterprise marketing and SEO teams with connected agents for accessibility, search, analytics, and content strategy.

2 investors

SiteManager is a browser-based website builder and content management platform that uses AI to assist with content creation and marketing tasks. It enables users to design and launch websites without coding, supporting features like multilingual content, dynamic content management, membership systems, forms, and external content integration.

2 investors

Sizeless provides an AI-powered mobile workflow for capturing construction trenches and utility connections with 3D precision. The software converts smartphone video scans into CAD-ready plans and GIS models for deep construction, district heating, and utility connection projects.

2 investors

SK8 provides a managed data integration layer that connects applications to 170+ systems using natural language, handling connectors, authentication, schema mapping, and syncing to deliver production-ready data infrastructure. It targets developers and enterprises, offering governance features such as audit trails, access controls, and SOC 2/GDPR/SOX compliance.

2 investors

SketchPro is an AI assistant that integrates directly into Autodesk Revit to automate construction documentation tasks for architects and engineering firms. The tool generates dimensioned floor plans, tagged elements, and standardized sheets while enforcing firm-specific standards and reducing repetitive work by approximately 10x.

2 investors

Skry is a US company that builds a blockchain analytics platform for aggregating and interpreting on-chain data pulled from multiple sources. It applies machine learning to surface patterns and risk signals, and exposes the results through APIs and visualization tools. The intended users are enterprises that need intelligence and risk assessment on blockchains and decentralized applications.

2 investors

Skygiraffe is an Israeli company that builds a platform for extending existing line-of-business systems to mobile devices. It uses a no-code approach, so organizations can create mobile apps that let staff view and update back-end data without custom development work. The product is aimed at enterprise IT teams supporting field and frontline employees.

2 investors

Skyramp is a testing platform that generates and executes automated tests for APIs, integrations, and user flows by analyzing application architecture and dependencies. It serves software engineering teams building complex applications with multiple integrations and interactive components.

2 investors

Slapdash is a productivity tool that connects a user's cloud apps in one place, providing a file-system layer and a fast keyboard-driven interface called the Command Bar. It aims to speed up everyday computer workflows across multiple applications.

2 investors

Smart Token Labs builds infrastructure for tokenization, including TokenScript (a smart token interface standard for composable tokens), AlphaWallet (an open-source EVM mobile wallet), and Smart Layer (a blockchain-based service network that executes token logic and integrates web services with token functionality). It serves token issuers and web service developers seeking to create and manage programmable smart tokens.

2 investors

Smithery builds infrastructure that enables AI agents to interact with and control external tools and systems through API integrations rather than traditional interface clicks. The company provides the underlying platform for agents to execute actions and access services across the internet.

2 investors

Smol Machines provides a runtime system for executing workloads in hardware-isolated Linux VMs with an open-source engine, supporting development workflows, code sandboxing, and portable executable packaging. It targets developers and organizations needing secure isolation and portability of applications across different environments.

2 investors

SnapMagic provides AI-assisted electronics design tools along with electronic component data used by electrical engineers at large organizations. The company serves electrical engineers worldwide for designing electronics.

2 investors

Soft Gear is a technology company specializing in server development for real-time online games, library provision, and metaverse development. It provides networking and server technology to support customers' online content, drawing on experience from the early days of online gaming.

2 investors

Software Defined Automation provides a platform for industrial operations that manages factory automation and control systems with AI-driven insights and built-in OT (operational technology) security. It serves manufacturing enterprises looking to centrally manage, monitor, and secure their industrial automation infrastructure.

2 investors

Solidity is an open-source programming language for writing smart contracts on the Ethereum blockchain, enabling developers to create decentralized applications with defined rules and logic. The language is governed by a core team and is part of the Argot Collective.

2 investors

Solvo provides a cloud security posture management (CSPM) platform with automated remediation to help security and engineering teams identify and address threats, vulnerabilities, and compliance issues across multi-cloud environments. It integrates with existing security and CI/CD tooling; the company was acquired by CYE.

2 investors

Sonic Labs administers the Innovator Fund, a 200 million S treasury allocation from the Sonic Foundation to accelerate adoption of applications on the Sonic blockchain and support new ventures building on-chain infrastructure and tools.

2 investors

Soracom operates a cloud-native IoT platform offering cellular and satellite connectivity, cloud integration, and AI services, with coverage across 500+ carriers in 200+ countries through a single platform and SIM. It serves startups and enterprises building connected products across industries such as agriculture, energy, transportation, manufacturing, healthcare, and retail.

2 investors