Developer Tools Startups

Sequel provides a virtual event platform that runs webinars on a company's own website rather than third-party destinations, capturing first-party engagement data including attendance, watch time, polls, and CTA interactions that integrate directly into CRMs.

5 investors

Shadeform is a GPU cloud marketplace that enables users to deploy high-performance GPUs across 30+ cloud providers worldwide through a unified platform. The service offers centralized billing, support, and pricing optimization for AI workloads, allowing customers to save up to 90% compared to major cloud providers.

5 investors

SigNoz provides observability and monitoring tools that help DevOps engineers and developers reduce noise and extract actionable signals from their systems. The platform serves engineering teams working with microservices and distributed systems.

5 investors

SimpleHash provides NFT indexing and data infrastructure for blockchain applications, helping companies reduce costs and improve customer experience in the crypto ecosystem.

5 investors

Simplex provides automated provider enrollment management for healthcare networks, handling CAQH profile setup, payer applications, and compliance tracking across multiple states and insurers. The platform uses AI agents to submit applications, monitor status, fix corrections, and deliver final enrollment determinations with full audit trails.

5 investors

Simplismart provides a machine learning inference platform for deploying and auto-scaling AI models, supporting LLMs, vision-language, diffusion, and speech models from a library of 150+ open-source models or custom weights. It offers deployment across public clouds, private VPCs, or on-premise setups with custom CUDA runtime optimization, rapid auto-scaling, and enterprise-grade uptime and security.

5 investors

Sloyd provides AI-powered 3D creation tools combining parametric geometry and generative AI, enabling creators to produce 3D models for games, virtual worlds, 3D printing, and digital experiences. The platform serves game developers, designers, and 3D printing enthusiasts who need to create professional 3D assets quickly.

5 investors

SmartBear provides a platform for software testing, design, and observability that helps development teams ensure application integrity throughout the development lifecycle. The company serves software development teams at scale.

5 investors

SnapTrade provides a brokerage API that enables developers and founders to build investing tools and trading platforms. The company serves software developers and financial application builders seeking to integrate with broker accounts.

5 investors

Snips develops embedded, on-device voice recognition technology; it was acquired by Sonos and continues operating in Paris as the Sonos Voice Experience team. The company focuses on bringing voice recognition to audio and connected devices.

5 investors

Spacebackend builds software infrastructure for integrating multi-vendor aerospace and defense hardware systems, automating the translation of hardware specifications into flight-ready software to collapse integration timelines. The company serves aerospace, defense, and space companies seeking to accelerate the integration and deployment of complex mission-critical systems.

5 investors

Spine is an AI research platform that orchestrates multiple AI models as parallel agents to conduct deep research and generate client-ready deliverables including reports, presentations, and spreadsheets. It serves investors, consultants, legal professionals, medical researchers, and founders across various industries.

5 investors

Subsquid provides permissionless, cost-efficient access to large-scale Web3 onchain data, aimed at decentralized application developers building across multiple blockchains. It operates as a data infrastructure platform in the crypto/Web3 space.

5 investors

Stack Moxie provides monitoring and alerting for critical marketing processes and workflows. The company helps teams identify and quickly resolve issues in their marketing operations.

5 investors

Stackery provides tools for building, deploying, and operating serverless applications on AWS, including support for AWS SAM, Lambda, SNS, and HTTP APIs. It targets software engineers and development teams working with serverless architectures.

5 investors

StackOne provides infrastructure for AI agents to integrate with and act across business applications through optimized connectivity, execution, and security features. The platform serves companies and developers building AI agents into products or using off-the-shelf agents like Claude Code.

5 investors

Standard Cyborg builds cloud and edge tools that let developers and non-developers create, deploy, and improve computer vision applications. It focuses on making computer vision technology accessible for building perception applications.

5 investors

Standard Kernel develops AI infrastructure software that automatically generates high-performance kernels for hardware accelerators like GPUs and TPUs, addressing the bottleneck of kernel optimization in AI workloads.

5 investors

StarSling builds AI-native continuous integration for GitHub Actions, providing fast runners and agents that analyze workflows, logs, and telemetry to automatically open pull requests optimizing CI pipelines. The platform targets software development teams seeking to reduce DevOps bottlenecks and accelerate deployment cycles.

5 investors

Streem provided unlimited cloud storage for media files, letting users store, stream, and share movies, photos, music and other content across devices without using local disk space. The company was acquired by Box in June 2014.

5 investors

Succinct builds cryptographic products and tools that enable proof of identity, ownership, and actions on the internet. The company serves developers and organizations across digital assets, privacy, media, cybersecurity, AI, and identity use cases.

5 investors

Sudo provides an account management platform with APIs and a dashboard for creating and managing local and international virtual bank accounts, letting users hold funds, manage cash flow, and perform domestic and cross-border transfers. It also offers card management tools for businesses building financial products.

5 investors

Superagent provides autonomous security research to identify, fix, and disclose software vulnerabilities in code and AI agents. The platform delivers patches as pull requests for software teams to review and deploy.

5 investors

Svix provides a webhooks-as-a-service platform that enables companies to send webhooks reliably and at scale. It serves developers and API teams across all company sizes looking to integrate real-time data infrastructure into their applications.

5 investors