Developer Tools Startups

Source develops an edge-first data management stack that enables developers to build applications across distributed devices and offline environments without reliance on centralized cloud infrastructure. The platform is designed for developers and organizations seeking to maintain sovereignty over their data and computing infrastructure.

2 investors

Nintex offers a no-code platform for building custom applications and automating business processes, letting teams create apps with drag-and-drop tools that connect multiple data sources and orchestrate workflows. Its capabilities include workflow automation, document generation, eSignature, and process mapping for business teams.

2 investors

Sovereign SDK is a blockchain development framework that enables developers to customize rollups with flexible configuration options, including transaction prioritization and custom authenticators. The platform prioritizes performance with sub-millisecond transaction confirmations and supports switching between different data availability layers and zero-knowledge virtual machines.

2 investors

Spark Automation provides 5-axis CNC milling, precision fabrication, automation integration, and test development services across multiple industries including automotive. The company offers design engineering, custom tooling, and comprehensive testing solutions for complex mechanical and electrical products.

2 investors

Specific AI is a platform that automates the creation of task-specific small language models (SLMs) through an end-to-end distillation process. It enables enterprises to create and deploy specialized models in days rather than weeks by automating data collection, scoring, model selection, fine-tuning, and evaluation.

2 investors

SpectralOps provides a developer-focused security platform (Spectral) that continuously scans code, logs, and other assets to detect exposed secrets, misconfigurations, and supply chain risks before data breaches occur. It integrates with CI systems, Git workflows, and source repositories, and lets teams build custom detectors with its SPEQL query language to enforce security and compliance policies.

2 investors

Speko provides a unified API gateway for voice AI that benchmarks and routes speech-to-text, language models, and text-to-speech providers to the optimal stack for each call across 10+ languages. Developers can describe voice agents in plain English, test them in a browser, and deploy to phone numbers, web widgets, or APIs without managing multiple provider credentials.

2 investors

Spidr provides infrastructure and tools that enable founders to build and launch financial products without operational complexity. The platform targets fintech entrepreneurs who need faster, more flexible development partners than traditional banking and payments infrastructure.

2 investors

Spire Labs develops blockchain infrastructure for Ethereum, including a platform for launching application-specific chains with based sequencing, transaction aggregation services, and RPC endpoints. The company serves developers and applications building on Ethereum and its layer-two networks.

2 investors

Spree Commerce is an open-source digital commerce platform that enables businesses to sell digital downloads, software licenses, and media subscriptions alongside physical products from a single catalog with integrated fulfillment workflows. The platform supports file management, license key delivery, subscription billing, and REST API integration for use by businesses of any scale.

2 investors

Spring provides open-source Java frameworks and tools for building applications and microservices, including support for web apps, cloud deployment, event-driven and batch processing, and integrating generative AI. It targets developers building production-grade, cloud-portable services in the enterprise Java ecosystem.

2 investors

Springtail built a way to scale Postgres read performance without data migrations, code changes, or new systems to manage, aimed at developers managing data infrastructure. The product is being discontinued and the team is joining Shopify, with plans to open source the project.

2 investors

SqlDBM is a cloud-based data modeling platform that helps teams design, collaborate on, and govern database schemas and semantic layers. It integrates with modern data stacks to provide visual data modeling, lineage tracking, and AI-ready governance across enterprise data architectures.

2 investors

SQLite Cloud provides a backend infrastructure for building offline-first applications across mobile, desktop, browser, and POS systems, with local SQLite writes that sync to cloud databases when connectivity is available.

2 investors

StackGuardian provides an AI-powered platform that automatically discovers cloud resources and converts them into infrastructure-as-code (Terraform and OpenTofu) for AWS, Azure, and GCP environments. The platform enables DevOps and cloud engineering teams to codify infrastructure, detect configuration drift, and enforce governance policies without manual toil.

2 investors

Stacktape is a platform-as-a-service that deploys applications to a user's own AWS account, provisioning containers, Lambda functions, RDS, Redis and other AWS services without requiring DevOps expertise. It targets developers and engineering teams that want production-grade, cost-optimized AWS infrastructure quickly.

2 investors

Stackup is a smart account platform that enables crypto companies to manage onchain financial operations through modern infrastructure for digital asset management. The platform targets enterprise-grade crypto businesses seeking to streamline transactions, hardware wallet management, and administrative processes.

2 investors

Stamplay is a UK company offering a cloud platform for connecting APIs and automating business processes. Users assemble workflows that pass data between systems used by support, sales, marketing, HR, finance and operations teams, building web applications without writing back-end code.

2 investors

STLabs is a platform for managing service operations, addressing the bottleneck that has traditionally plagued enterprise service delivery.

2 investors

Start Left provides execution intelligence for software teams to optimize product security, supply chain security, and code quality. The platform bridges developers, code, security, and infrastructure to embed security into workflows while improving developer efficiency and team execution.

2 investors

Statuspage is a status page and incident communication tool that lets companies notify users about downtime and service incidents. It was acquired by Atlassian in 2016.

2 investors

Steel offers an open-source browser API that lets developers run and control fleets of cloud-based browsers for automation, including features like session management, CAPTCHA solving, proxies, and session observability. It targets developers building AI agents, web scraping jobs, RPA, and model-training data pipelines, with support for Puppeteer, Playwright, and Selenium.

2 investors

Steno.ai builds AI digital twins of influential leaders that enable one-on-one conversations with audiences at scale. The platform creates hyper-realistic AI replicas that can provide personalized guidance, advice, and authentic interactions between creators/leaders and their followers.

2 investors

StepSecurity provides a platform to prevent, detect, and respond to software supply chain attacks across developer machines, code repositories, and CI/CD pipelines. It offers security controls such as Harden-Runner, GitHub Actions monitoring, and a threat intelligence team focused on identifying supply chain attacks.

2 investors