Developer Tools Startups

Superpowered develops an interactive audio development platform for desktop, mobile, IoT, and embedded devices. The platform serves developers, product teams, and technology organizations building audio applications.

1 investor

Superpowered AI offers an API that lets developers connect large language models to external data sources, such as regulatory databases, for retrieval-augmented generation capabilities. The platform targets teams building production LLM applications that need reliable access to knowledge outside the base model's training data.

1 investor

Superthread is a unified workspace combining task management, project documentation, and AI-powered meeting transcription for engineering and product teams. The platform replaces fragmented tool workflows with a single app featuring sprints, kanban boards, and integrations with GitHub, Slack, and Google Calendar.

1 investor

SuperTokens is an open-source authentication and session management solution that developers integrate via frontend and backend SDKs to build login, session handling, and user access controls. It offers features such as social logins, CAPTCHA protection, multi-tenancy, user banning, and migration tooling, positioning itself as a self-hostable alternative to Auth0, AWS Cognito, and Keycloak.

1 investor

SuperTokens is an open-source user authentication platform that enables developers to add authentication infrastructure to their products within 15 minutes. The company provides robust user management and authentication services to engineering teams building applications, following an open core model with free base features and paid enterprise capabilities.

1 investor

SurfSense is an open-source, NotebookLM-style research platform that lets users and AI agents pull live data from sources like Reddit, YouTube, Instagram, TikTok, Indeed, Google Maps, Google Search, Amazon, and Walmart through platform-native REST APIs or an MCP server. It provides a research workspace with cited briefs and a knowledge base alongside connector APIs that return structured data such as posts, comment trees, transcripts, reviews, and search results.

1 investor

Surge provides an SMS API for developers to add text messaging to applications. The platform emphasizes ease of use with intuitive APIs, clear documentation, and simplified carrier registration processes.

1 investor

SurrealDB is a multi-model database that combines graph, vector search, document, time-series, and geospatial capabilities in a single engine, used for AI applications, knowledge graphs, and real-time analytics. It serves enterprise engineering teams building systems such as AI assistants, RAG pipelines, fraud detection, and recommendation engines.

1 investor

Sutherland designs, runs, and automates enterprise operations at scale, building production-grade agentic AI solutions grounded in deep domain expertise. The company serves large enterprises globally through AI-first digital engineering, business process automation, and managed services.

1 investor

Sutro provides a backend infrastructure platform that enables developers to define and deploy production-grade backends through a domain-specific language called SLang. The platform automatically generates data models, APIs, schemas, validation, and async workflows for applications.

1 investor

Swarm is an open-source, decentralised peer-to-peer storage and communication network that lets developers build serverless, permissionless web3 applications, run Bee nodes, and store data in a fault-tolerant, censorship-resistant way. It also provides the Fair Data Protocol for data interoperability and privacy, serving web3 developers, creators, and non-profits.

1 investor

Sweep builds AI coding tools for JetBrains users, including autocomplete and agent features with an emphasis on speed, accuracy, and privacy. The company operates its own models to deliver a secure AI coding experience.

1 investor

Swell is a headless commerce infrastructure platform that enables developers, agencies, and brands to build customized buying experiences with data control, flexibility, and scalability.

1 investor

SWITCH is an audio-based speed dating platform that prioritizes live conversations over visual matching, with a matching algorithm that progressively reveals profile photos as conversations progress. The app serves people seeking authentic connections through real-time conversations rather than swiping.

1 investor

A website and mini-program builder that allows users to publish websites, mini-programs, and e-commerce platforms without design or coding skills. The service serves entrepreneurs, designers, photographers, students, and small business owners across 200+ countries.

1 investor

Sybrin offers document verification and identity validation services that combine intelligent document capture, data extraction, and fraud detection using AI and optical character recognition. The solution is designed for regulated industries to streamline onboarding, strengthen compliance, and detect document fraud.

1 investor

Synergiya Digital is a software development company that builds IT systems and custom software applications for educational institutions and enterprises seeking to digitize their operations. The company provides consulting, system implementation, mobile app development, and ongoing support services focused on the education sector.

1 investor

Symbiotic Flow is a security tool designed to fit into developers' workflows without slowing them down, aiming to reduce the friction that causes security steps to be skipped and risk to accumulate in code. It targets software development teams in the application security space.

1 investor

Sync develops lipsync technology that edits and syncs mouth movements in video to match audio across multiple languages, working on content including movies, podcasts, games, and animation. It offers API access, studio tools, and proprietary watermarking to verify whether a video was modified using its technology.

1 investor

Syncro is a technology platform designed for IT professionals and managed service providers (MSPs) that combines automation, security operations, and AI capabilities to help IT teams bridge the skills gap and improve operational efficiency.

1 investor

Syndr (Hotstuff) offers a single margin account for trading crypto perpetuals, tokenized equities, ETFs, and RWAs with up to 50x leverage and 24/7 market access. It provides US virtual accounts with multi-rail fiat funding (ACH, Fedwire, SWIFT, SEPA, PIX and others), FX stablecoin/fiat swaps, and a TypeScript SDK for trading desks, bots, and production infrastructure.

1 investor

Synergy ECP provides data transport infrastructure, DevSecOps platforms, and cloud-native engineering services designed for enterprise mission environments, particularly supporting U.S. intelligence community and defense sector operations.

1 investor

SYNQ provides automated testing and self-learning anomaly monitoring for data quality and observability, combining data contracts, business tests, and adaptive monitors into a unified platform. The company serves data teams and regulated organizations that need to ensure data accuracy and reliability across their pipelines.

1 investor

Synqly provides a unified API platform that delivers native integrations for security and IT operations vendors, enabling them to integrate once and gain access to multiple providers across categories. The platform enables secure OEM integrations in regulated environments and supports AI-driven integration through Model Context Protocol.

1 investor