Monitoring & Observability
Application performance monitoring, logging, and error tracking
8 Datadog Alternatives That Won't Charge You Per Host (2026)
Tired of Datadog bill shock? These 8 alternatives use usage-based or flat pricing instead of per-host billing. Open-source and managed options compared.
7 Best Open-Source Monitoring & Observability Stacks (2026)
Compare the best open-source monitoring and observability tools for 2026. Prometheus, Grafana, SigNoz, and unified stacks ranked by features and scalability.

Acceldata
Agentic data management platform for enterprise data observability and reliability

Arize Phoenix
Open-source AI observability platform for tracing, evaluation, and prompt management

Better Stack
Observability platform combining logs, uptime monitoring, and incident management

Calibre
Web performance monitoring platform for Core Web Vitals, page speed, and real-user analytics

Fortra Event Manager
Enterprise SIEM for real-time threat detection and security event management

Goliath Performance Monitor
End-user experience monitoring and troubleshooting for Citrix and VMware environments

Google Cloud Asset Inventory
View, monitor, and analyze all your Google Cloud assets across projects and services

Langfuse
Open source LLM engineering platform for observability, evals, and prompt management

Splunk APM
Full-fidelity application performance monitoring with NoSample distributed tracing

TensorZero
Open-source LLM infrastructure for gateway, observability, optimization, and experimentation



































