Monitoring
APM, logging, error tracking
Services(4)
Ownership Structure
Deployment
License Type
Country
98/100
EU
BootstrappedSaaS
Monitoring
Oh Dear
All-in-one website monitoring for uptime, SSL, links, and performance
81/100
BootstrappedSelf-HostableAGPL-3.0
Monitoring
SigNoz
Open-source observability platform for traces, metrics, and logs
★ 32.4k
73/100
EU
Mixed (<30% Non-EU)
Monitoring
AppSignal
Application Performance Monitoring for Ruby, Elixir, Node.js, and Python
41/100
EU
Mixed (>30% Non-EU)Self-HostableMIT
Monitoring
Langfuse
Open source LLM engineering platform for traces, evals, and prompt management
★ 35.8k
37/100
EU
Mixed (<30% Non-EU)SaaS
Monitoring
Better Stack
Observability stack with uptime monitoring, logs, and incident management
20/100
EU
Non-EU ControlledSaaS
Monitoring
Checkly
Application monitoring platform for APIs and websites using Playwright