Open Source Startups
170 companies tagged Open Source, with their investors and founders.
ParadeDB is a Postgres extension that adds full-text search, vector retrieval, and aggregation capabilities to PostgreSQL databases. It enables developers to consolidate search and analytics workloads into a single database using standard SQL without requiring a separate search engine.
3 investors
Payload is an open-source Next.js backend platform serving developers and marketers who need flexibility beyond traditional content management systems. The platform provides infrastructure for building custom content and data management solutions without vendor lock-in.
3 investors
Refine is an open-source web application framework that helps organizations build web applications faster with fewer resources. The company develops the open-core framework and related ecosystem products.
3 investors
S2.dev builds infrastructure services and tools for developers. The company focuses on providing a platform for application development and deployment.
3 investors
Sourcebot provides a code search and context layer tool for coding agents and development teams, allowing rapid search across multiple repositories and integration with AI agents for tasks like code understanding and context gathering.
3 investors
Standard Cyborg provides cloud and edge infrastructure that enables developers and non-technical users to construct, test, and optimize computer vision applications without specialized expertise.
3 investors
Traceloop provides debugging and monitoring tools for developers building machine learning systems and large language model applications. The platform helps teams observe and troubleshoot production systems, including real-time inference and model behavior.
3 investors
Trigger.dev is an open source platform for building and running AI agents and workflows using TypeScript, with built-in support for long-running tasks, automatic retries, job queues, monitoring, and auto-scaling infrastructure.
3 investors
Ukama provides tools and infrastructure that enable organizations to design and deploy their own cellular networks without requiring telecommunications expertise.
3 investors
Unsloth provides tools and models for machine learning optimization and training. The company develops open-source software for efficient model training and deployment.
3 investors
Wasmer makes software universally available, providing solutions that enable developers and companies to maximize their potential through its platform and tools.
3 investors
Bun is a JavaScript and TypeScript toolkit that includes a runtime, bundler, test runner, and package manager designed to be compatible with Node.js projects. It can be adopted incrementally as individual tools or as a complete stack.
2 investors
A native macOS terminal application built on libghostty that features vertical tabs, split panes, notification alerts, and a programmable API for developers working with AI coding agents and terminal-based workflows.
2 investors
Confident AI is a platform for evaluating, monitoring, and governing AI systems in production. It enables teams to standardize testing practices, track quality and latency metrics, and enforce governance policies across multiple AI initiatives.
2 investors
Cua provides open-source infrastructure and cloud sandboxes for AI agents to run on desktop operating systems (Linux, Windows, macOS, Android). The company serves developers and researchers building computer-use agents.
2 investors
A managed platform that runs Apache Spark workloads on Kubernetes infrastructure, now offered as part of NetApp's product suite for data engineering teams.
2 investors
Elementary builds data observability tools that monitor data quality and reliability for modern data teams. The platform evolved from an open-source solution into a cloud-based product that integrates with existing data warehouses and BI tools.
2 investors
Enso is an AI-first data preparation and blending platform that enables data teams to ingest, clean, transform, and analyze structured and unstructured data across multiple sources including databases, files, and APIs. The platform supports both visual and code-based workflows and runs on cloud and desktop environments.
2 investors
Evidently is an open-source library for monitoring machine learning models in production, offering 100+ built-in metrics for data quality, model drift detection, and performance tracking. It serves ML teams and data scientists across enterprises and startups who need to monitor models throughout the ML lifecycle.
2 investors
Fig develops autocomplete software, visual applications, and keyboard shortcuts for terminal interfaces, designed to make command-line tools more usable for both novice and experienced developers.
2 investors
Freestyle provides Linux virtual machines that provision in milliseconds with integrated version control, designed for running distributed agents at scale. The platform offers full KVM support, real root access, and nested virtualization capabilities for agent-based workloads.
2 investors
Hatchet is an orchestration platform for building and running mission-critical workflows, background tasks, and AI agent applications. It provides task scheduling, retry logic, event-driven triggers, and monitoring through a managed cloud service or self-hosted deployment.
2 investors
HyperDX provides distributed tracing and observability software for developers, enabling end-to-end request tracing from browsers and phones to backend servers. The platform uses ClickHouse for fast search across event data and includes features for session replay correlation, log aggregation, and metrics visualization.
2 investors
Infisical is an all-in-one platform for managing application secrets, certificates, and privileged access across cloud, on-premises, and AI infrastructure, serving developer teams and organizations. The platform provides centralized storage, rotation, and auditing of credentials without requiring custom scripts or ad-hoc secret management solutions.
2 investors