The API Monitoring Tool You've Been Waiting For

Compare AlertSite, Runscope, and Postman API Monitoring


AlertSite Transforms Your Performance at a Fraction of the Cost

With comprehensive synthetic monitoring functionalities, you'll have unmatched observability into your web, API, and application performance.

See for Yourself




Global Monitoring Locations – Cloud & Physical

Only cloud locations


Limited- only 6 locations


Over 350 global physical nodes + cloud locations

Monitoring Behind The Firewall (Private APIs)
Monitor UI And API Layer
Failure Validations
Alerts Sent Directly Monitoring Node
Codeless Monitor Creation
Test Script Reuse
SLA Reporting & Alerting
Granular Alert Targeting
Monitor Blackout Setting
Alert Blackout Setting
Performance Benchmarks & Deviation Alerts
Run In Different Environments (I.E. Test, Staging, Production)
Run Frequency 1 Min And Above
Share Monitor Metrics
Native Persisting Global Variables

Integrations can support


Coming Soon – In Product Roadmap

Programmatically Control

We can conduct tests before applications go live to ensure they are ready to transact business and then monitor them continuously in case any future conditions impact their performance. With AlertSite tracking application performance 24x7, we are able to resolve issues well before they impact our business partners and customers.

Jeff Palmiero, Manager of Application Performance Monitoring, Raymond James

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Trainings Ensure You See ROI Immediately

We've had over 50,000 customers go through our SmartBear Academy, where users get free weekly trainings on product tips and testing strategies. Join our community today and expand your testing knowledge.

Visit the SmartBear Academy

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Create an account to start monitoring your websites, applications, APIs, and more.

  • Intuitive SaaS tool for seamless, easy deployment
  • Monitor Private and Public assets
  • Access to 350+ global network of nodes
  • Test-On-Demand for immediate observability