7 tools
Keycloak project (CNCF incubating, originated at Red Hat) · Identity & access
Open-source identity and access management server providing single sign-on with OpenID Connect, OAuth 2.0 and SAML, user federation and fine-grained authorization
Langfuse (part of ClickHouse, Inc. since January 2026) · Prompting, evaluation & observability
Open-source LLM observability and evaluation platform: tracing, LLM-as-judge and human evals, prompt management, datasets and cost dashboards, self-hostable or as Langfuse Cloud
OpenSearch Software Foundation (Linux Foundation) · Vector databases
Apache-2.0 search and analytics suite forked from Elasticsearch and Kibana, governed by the OpenSearch Software Foundation
Prometheus Authors / Cloud Native Computing Foundation · Monitoring & observability
Pull-based metrics monitoring system and time-series database with the PromQL query language, service discovery and the Alertmanager component
rclone project (Nick Craig-Wood) · Backup & recovery
Command-line program to sync, copy, mount and serve files across dozens of cloud storage providers and protocols, with optional client-side encryption
Supabase Inc. · Relational databases
Open-source backend platform built around a dedicated PostgreSQL database with auto-generated APIs, authentication, file storage, realtime subscriptions and edge functions
Louis Lam (open-source project) · Monitoring & observability
Self-hosted uptime monitor with HTTP, TCP, DNS, ping and keyword checks, many notification channels and public status pages
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