Grafana

Loki is an open-source log aggregation system developed by Grafana Labs that indexes and queries logs using Prometheus-style labels instead of full-text indexing. It ingests log streams via shippers such as Promtail, Fluentd, or other collectors, stores data in local or object-storage backends, and is queried with the LogQL language; it integrates with Grafana for visualization and is available for self-hosting or via Grafana Cloud.

An open-source distributed tracing backend developed by Grafana Labs. Tempo ingests traces via Jaeger, Zipkin and OpenTelemetry (OTLP), stores trace data in scalable object stores (Amazon S3, Google Cloud Storage, Azure Blob Storage, MinIO) using a chunk-based, low-index architecture, and exposes query APIs compatible with Jaeger/OTLP with tight integration into Grafana for visualization. It is available under the Apache 2.0 license and can be run self-hosted (Docker, Kubernetes/Helm) or used as a managed service on Grafana Cloud.

Prometheus is a Cloud Native Computing Foundation monitoring system and time-series database. It collects metrics from configured targets at intervals, evaluates rule expressions, displays results, and can trigger alerts when specified conditions occur. Its architecture uses a multi-dimensional time-series data model, the PromQL query language, an HTTP pull model, service discovery or static target configuration, and autonomous single-server nodes without a dependency on distributed storage. It is distributed as precompiled binaries, Docker images, and source code, with graphing, dashboarding, federation, and an intermediary gateway for batch-job metric pushes.

OpenAnalytics is an open-source, self-hostable web analytics stack developed by OpenLabs. It uses a lightweight browser tracker without cookies, fingerprinting, or cross-site profiles, and provides aggregate-only analytics for page views, custom events, sessions, web vitals, funnels, retention, embeddable widgets, public sharing, live presence, and Stripe revenue attribution. The repository is a pnpm monorepo comprising a tracker, ingestion collector, queue worker, API, ClickHouse query gateway, realtime SSE service, Next.js dashboard, and CLI. Postgres stores control-plane data, ClickHouse stores events and rollups, and Valkey provides the event queue and realtime cache. The query gateway is the only component permitted to read ClickHouse and verifies Ed25519-signed query envelopes; visitor identity uses a salted hash that rotates nightly, while optional city-level geolocation is resolved against a database on the host. It also includes CSV/JSON import and export, an MCP server, and an AI assistant. The project is licensed under AGPL-3.0. It can be self-hosted with Docker Compose, or used through the authors' hosted instance at getopen.so. Release images are published to GitHub Container Registry.

An Apache-2.0-licensed open-source Go SDK from Grafana for building AI-powered backends and agents. It provides GenerateText and StreamText APIs for calling language models, returning complete or streamed responses, executing Go functions as tools, generating schema-validated structured output, and running multi-step tool workflows, with approval for consequential tool actions. The SDK supports Anthropic, Amazon Bedrock, OpenAI, OpenAI-compatible APIs, and Grafana's hosted endpoint, along with retries, configurable timeouts, fallbacks, logging, Prometheus metrics, and Agent Observability. It follows the design of Vercel's AI SDK and is wire-compatible with its TypeScript React frontend hooks, including useChat, useCompletion, and useObject, allowing Go backends to stream Server-Sent Events directly to an existing React frontend without a protocol adapter.