Developer Tools Startups
4,617 companies tagged Developer Tools, with their investors and founders.
StackAI is an enterprise platform for building and orchestrating AI agents with governance, security, and integration capabilities. The platform serves IT and enterprise architecture teams who need to deploy AI workflows with compliance controls across regulated and complex operations.
3 investors
The stackrox.com domain now redirects to Red Hat's Advanced Cluster Security for Kubernetes, a Kubernetes-native security platform that provides vulnerability management, compliance checks, policy enforcement, and runtime protection across the container software development lifecycle. It serves DevOps and security teams securing containerized and Kubernetes-based workloads.
3 investors
Stakpak is an open-source autonomous agent that runs on machines 24/7 to monitor, maintain, and automate operational tasks for software applications in production environments. It handles tasks like health checks, resource optimization, certificate renewal, and incident response with built-in security controls and full auditability.
3 investors
Starknet is an Ethereum Layer 2 Validity Rollup that uses STARK cryptography to validate off-chain transactions for greater scalability while retaining Ethereum's security. It offers native account abstraction, the Cairo smart contract language, and privacy features for developers building decentralized applications (DeFi, NFTs, gaming).
3 investors
Steadybit is a chaos engineering and reliability testing platform that helps product and engineering teams identify, validate, and fix reliability issues in their networks and applications before they reach production. It offers automatic target discovery, a drag-and-drop experiment editor, reliability advice, RBAC guardrails, an AI companion (SteadyBuddy), and open source extensions, with both SaaS and on-prem/air-gapped deployment options.
3 investors
Stellon Labs develops compact AI models optimized for edge computing and resource-constrained hardware environments.
3 investors
Stigg provides a usage runtime that decides in real time what customers, users, and AI agents are allowed to do, combining credits, entitlements, metering, and spend governance in a single enforcement layer. It targets engineering teams monetizing AI and software products, layering on top of existing billing systems with bi-directional sync and offering hosted or self-managed VPC deployment.
3 investors
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
Subconscious develops TIMRUN, an inference runtime, and the TIM family of post-trained open models optimized for AI agent workloads rather than chatbots, offering on-GPU context compression that extends context windows and increases concurrency and token throughput. It serves developers building coding agents, agentic products, and edge deployments via OpenAI- and Anthropic-compatible APIs, and can act as a drop-in replacement for vLLM and SGLang.
3 investors
Subtrace is a tool that captures and displays HTTP traffic to and from running processes in real time without requiring code modifications or elevated permissions. It serves infrastructure engineers and developers who need visibility into network activity across their systems.
3 investors
Superwall provides a no-code platform for mobile app developers to design, A/B test, and optimize in-app paywalls and subscription flows. The platform enables monetization experiments and revenue optimization for iOS, Android, and cross-platform apps.
3 investors
Sutro provides production-grade backend infrastructure and APIs for applications through a declarative language called SLang, enabling developers to define data models and deploy complete backend systems with minimal effort.
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
Swiftype builds search platforms for organizations, including a hosted site search solution for websites and an AI-powered enterprise search product that indexes content across cloud data sources. The platform serves enterprises, applications, and websites across multiple industries.
3 investors
Swimm provides agentic software modernization services that combine proprietary static analysis, GenAI agents, and senior engineers to map codebases, extract business logic, migrate legacy systems, and build AI-ready knowledge bases. It serves enterprise engineering teams handling large-scale migrations, including mainframe and legacy environments such as COBOL, JCL, and PL/I.
3 investors
Syllable is a platform for building, running, and optimizing production AI agents, offering a no-code conversational builder for domain experts and declarative configurations and APIs for engineering teams. It runs agents on multi-cloud infrastructure (AWS, GCP, Azure, OCI) with observability, governance, human-in-the-loop controls, and security for use cases such as voice automation, call center QA, internal copilots, and support agents.
3 investors
Symbl.ai offers a developer platform with APIs, SDKs, and a specialized LLM (Nebula) that enterprises use to build real-time AI agents and conversation intelligence from voice, video, and chat. It provides tools for support, sales, and service teams to power voice agents, live agent assist, call scoring, sentiment analysis, and compliance alerts.
3 investors
Symbolica is an AI research lab that combines category theory and type theory to build symbolic reasoning engines. The company has launched Agentica, an agent-builder platform that enables multi-agent systems with code execution capabilities.
3 investors
TACEO builds a privacy layer for public blockchains, offering composable primitives for confidential stablecoin payments, private treasury and DeFi operations, identity verification without exposing user data, and confidential transactions for AI agent commerce. The product targets developers building on existing chains, spanning payments, identity/credentialing, and agent-to-agent commerce.
3 investors
Taloflow provides technology research and evaluation services for consulting firms and enterprises, delivering client-ready reports to support informed technology purchasing decisions.
3 investors
Tasklet is an AI command center that enables teams to build, share, and run AI agents without coding. It provides centralized management of connections, credentials, and API integrations while offering secure cloud compute for agent execution, browser automation, and custom app generation.
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
Tempo provides work management and visibility software that integrates across existing team tools and platforms to help organizations track project performance and resource capacity.
3 investors
TensorZero is an open-source project that was available on GitHub; it is no longer maintained.
3 investors