Compare the Top Free API Monitoring Tools as of June 2025

What are Free API Monitoring Tools?

API monitoring tools are software solutions designed to track the performance of an application programming interface (API). These tools can provide insights into API errors, request routing, latency, and other key metrics. They also help identify potential issues such as broken calls or security susceptibilities. Additionally, API monitoring can be used to log all calls made to the API and alert users of any unexpected behaviour. Furthermore, some API monitoring tools are able to recognize trends in user requests that could indicate a need for increased capacity or improved design. Finally, these tools are typically cloud-based and easy to integrate into existing architectures without requiring significant changes. Compare and read user reviews of the best Free API Monitoring tools currently available using the table below. This list is updated regularly.

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    Site24x7

    Site24x7

    ManageEngine

    ManageEngine Site24x7 is a comprehensive observability and monitoring solution designed to help organizations effectively manage their IT environments. It offers monitoring for back-end IT infrastructure deployed on-premises, in the cloud, in containers, and on virtual machines. It ensures a superior digital experience for end users by tracking application performance and providing synthetic and real user insights. It also analyzes network performance, traffic flow, and configuration changes, troubleshoots application and server performance issues through log analysis, offers custom plugins for the entire tech stack, and evaluates real user usage. Whether you're an MSP or a business aiming to elevate performance, Site24x7 provides enhanced visibility, optimization of hybrid workloads, and proactive monitoring to preemptively identify workflow issues using AI-powered insights. Monitoring the end-user experience is done from more than 130 locations worldwide.
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    Starting Price: $9.00/month
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