Arize Phoenix AIArize Phoenix is an open-source LLM observability platform built on OpenTelemetry. Instrument, trace, evaluate, and optimize AI applications in real time—framework-agnostic and vendor-lock-in free.(0)0
TolgeeTolgee is an open-source localization tool with in-app translation, AI-powered suggestions, and collaborative workflows. Translate your app to any language without wasting developer time.(0)0
Thanos MetricsThanos extends Prometheus with global query federation, unlimited object storage retention, and downsampling. A CNCF incubating project, free and open source under Apache 2.0.(0)0
Flagsmith AI Feature FlagFlagsmith makes it easy to create and manage feature flags across web, mobile, and server-side apps. Roll out safely with segmentation, A/B testing, and remote config—cloud or self-hosted.(0)0
Microsoft Accessibility InsightsAccessibility Insights is a free, open-source toolset from Microsoft for testing WCAG 2.1 AA compliance in web apps and Windows applications before they reach customers.(0)0
Windmill AI WorkflowWindmill is an open-source, self-hostable workflow orchestration platform for developers. Build internal tools, data pipelines, and automation workflows in 20+ languages with AI assistance, Git collaboration, and enterprise-grade security.(0)0
LiteLLM ProxyLiteLLM Proxy is an open-source LLM gateway that provides a single OpenAI-compatible API to manage authentication, load balancing, and spend tracking across 100+ LLM providers.(0)0
R Ray ServeRay Serve is an open-source, scalable model serving framework built on Ray for deploying ML models, LLMs, and multi-model pipelines in production.(0)0
Fluent BitFluent Bit is a lightweight, open-source telemetry agent deployed over 15 billion times. Process and route logs, metrics, and traces across cloud, container, and hybrid environments.(0)0
LiteLLMLiteLLM is an open-source AI Gateway that provides a unified OpenAI-compatible proxy to 100+ LLMs, with spend tracking, rate limiting, fallbacks, and virtual key management.(0)0
