Developer Tools Startups

Streamkap provides a fully managed platform for real-time data streaming that simplifies infrastructure complexity by combining Apache Kafka, CDC engines, and streaming agents. The platform targets engineering teams and companies that need to stream data without managing complex underlying infrastructure.

3 investors

Streamlit provides an open-source Python framework for building and sharing data and machine learning web apps without front-end development, letting developers create interactive dashboards and apps directly from Python scripts. It serves data scientists and developers, with deployment options through Streamlit Community Cloud or Snowflake for enterprise use.

3 investors

String offers a web access API that handles web scraping at scale with rotating proxies, anti-bot bypass, CAPTCHA solving, automatic retries, and JavaScript rendering capabilities. The API serves developers and agents integrating web data retrieval into applications and systems.

3 investors

Strivacity provides a Customer Identity and Access Management (CIAM) platform that enables organizations to deliver streamlined registration and sign-in experiences. The platform serves businesses seeking modern identity solutions.

3 investors

Structured uses AI and computer vision to automatically review architectural and engineering drawing packages, checking for compliance violations, coordination conflicts, and scope gaps across disciplines including architecture, structural, MEP, and civil engineering.

3 investors

Superapp is an AI-powered app builder that generates native Swift and SwiftUI apps for iPhone, iPad, Apple Watch, and Mac from plain-English descriptions, without requiring coding. It runs in the browser and builds in the cloud, delivering complete Xcode projects that users own and can export or extend.

3 investors

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.

3 investors

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.

3 investors

Swantide provides purpose-built AI agents for Salesforce teams that operate across the project lifecycle, including org health assessment, requirements gathering, impact analysis, solution design, build (Apex, Flows, config), test case generation, debugging, and documentation. It reads only an org's configuration metadata, runs within Salesforce's permission model, and includes a customer success team to drive adoption, with Agentforce readiness assessment among its offerings.

3 investors

Swarmia provides a software engineering intelligence platform that measures and improves developer productivity and experience for engineering teams. The platform tracks business outcomes, developer productivity, and developer experience across organizations of all sizes.

3 investors

Swimm provides agentic software modernization as a product-enabled service, combining a proprietary engine that maps code dependencies and data flows, AI agents that apply verified patterns at scale, and subject-matter experts who validate the output. It targets enterprises with large or sensitive codebases, offering on-premise and air-gapped deployment and handing off playbooks, test suites, and knowledge bases so engineering teams can maintain the system themselves.

3 investors

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.

3 investors

Synnada is an AI infrastructure company building tools for running persistent, continuously operating agent systems in production, including Mithril (an ML compiler), Tenet (multi-cloud deployment for AI workloads), and Agentia (a runtime for persistent agents). Its Agency product applies these to agent-native data science, combining reasoning, code execution, and machine learning into continuously operating decision systems.

3 investors

Tapaya provides a drop-in software development kit that turns any device into an in-store payment terminal, enabling developers to accept multiple payment methods without payments expertise. The platform offers multi-method payment acceptance, analytics, and APIs for developers building payment functionality into their applications.

3 investors

Taro operates a community platform where software engineers access educational content and career development resources while tech companies use the service to source and recruit engineering talent.

3 investors

Taste Labs is a hybrid research and infrastructure company that develops tools and models to quantify subjective domains like design and aesthetics, enabling AI systems to produce outputs that are not just technically correct but aesthetically and contextually appropriate.

3 investors

tea is a web3 rewards protocol for open-source software that uses a Proof of Contribution ranking algorithm to measure the impact of OSS projects. It operates as an incentive layer integrated with major software package managers including Homebrew, npm, APT, Crate, PyPI, RubyGems, and pkgx.

3 investors

Tellor is a decentralized oracle protocol that enables smart contracts to access off-chain data, perform off-chain computations, and relay messages between blockchains using crypto-economic incentives secured by its TRB token. It serves DeFi applications and smart contract developers requiring permissionless, secure access to external data sources.

3 investors

Templarbit offers a developer-oriented security platform that protects software applications from malicious activity, serving both small and large companies.

3 investors

Tempo is a visual code editor for React applications that enables product managers, designers, and engineers to collaborate on component development through a design-tool interface backed by IDE functionality, with native support for Vite and Tailwind.

3 investors

Tensormesh provides model-level caching infrastructure for AI teams to reduce redundant processing and lower inference costs on context-heavy workloads. The platform helps developers scale applications that reuse context across multiple requests.

3 investors

TensorPool provides a command-line tool that manages GPU allocation and execution for machine learning model training, offering pricing lower than major cloud providers.

3 investors

TensorZero is an open-source project that was available on GitHub; it is no longer maintained.

3 investors

Tero builds an observability layer that processes production telemetry data and converts it into actionable context, evidence-backed issues, and safe action paths for AI agents and engineering teams. The platform sits above existing monitoring stores to enable automated production work and decision-making.

3 investors