Built an free uptime monitoring tool after getting sick of DataDog prices

Introducing SynthMon: A Free, Distributed Uptime Monitoring Solution Built by Developers for Developers

In the landscape of website performance monitoring, tools like DataDog Synthetics have become industry standards. However, their escalating costs can pose significant barriers, especially for small teams and individual developers. Frustrated by these pricing challenges, I embarked on a mission to develop a cost-effective alternative that remains robust and user-friendly. After a year of internal testing and refinement, I am excited to unveil SynthMon โ€” a free, distributed uptime monitoring platform designed to meet the real-world needs of developers.

Why SynthMon?

Traditional monitoring services often require substantial financial commitments, which can disrupt project budgets and limit usage. SynthMon offers a different approach, emphasizing accessibility, flexibility, and community-driven sustainability. By leveraging a distributed architecture, SynthMon empowers users to contribute monitoring nodes, creating a resilient and scalable monitoring network that is free to utilize.

Core Features

  • Global Location Monitoring: Track your websites from multiple real-world locations to ensure consistent performance worldwide.
  • Enhanced Verification: Utilize a three-agent verification system that minimizes false downtime alerts, providing more accurate insights.
  • Effortless Setup: Simply input your website URL, and you’re ready to start monitoring โ€” no complex configurations needed.
  • Flexible Check Intervals: Customize monitoring frequency with intervals ranging from 1 to 10 minutes to suit your needs.

Upcoming Features

We are committed to continuous improvement. In the next few days, users can expect email notifications for uptime alerts and additional functionalities such as internal endpoint monitoring, tailored for development environments. These enhancements aim to streamline debugging and performance checks during the development lifecycle.

Sustainability Model

SynthMonโ€™s distributed architecture is pivotal to its sustainability. Users can run monitoring nodes on their own infrastructure, earning points that contribute to the network’s robustness. This community-driven model ensures that the platform remains free, scalable, and resilient over time.

Get Started

Interested in enhancing your websiteโ€™s reliability without the hefty price tag? Visit https://synthmon.io/ to learn more and join a community dedicated to accessible, effective uptime monitoring. Your feedback is invaluable โ€” let us know what features would improve your workflow, and help shape the future of SynthMon.


Built with developer needs at heart, SynthMon exemplifies how innovative, community-powered solutions can disrupt traditional software models. We look forward to supporting your websiteโ€™s performance and reliability for free.


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