The best open source alternative to ProjectDiscovery is Grafana. If that doesn't suit you, we've compiled a ranked list of other open source ProjectDiscovery alternatives to help you find a suitable replacement. Other interesting open source alternatives to ProjectDiscovery are: NetData, Prometheus, SigNoz, and Coroot.
ProjectDiscovery alternatives are mainly Infrastructure Monitoring Tools but may also be Performance Monitoring (APM) Tools or Log Management Tools. Browse these if you want a narrower list of alternatives or looking for a specific functionality of ProjectDiscovery.
Grafana unifies metrics, logs, traces, profiles, and business data into one OpenTelemetry-native platform with AI-assisted root cause analysis and adaptive cost controls.

Grafana is a self-hosted observability platform built on open standards like OpenTelemetry and Prometheus. It brings together metrics, logs, traces, profiles, and business data into a single view, so engineering and SRE teams can troubleshoot across their entire stack without jumping between tools.
It's built for teams that want the flexibility of open source without the overhead of managing infrastructure themselves. Hundreds of plugins and integrations let you connect existing data sources rather than replacing them.
Key capabilities include:
Compared to alternatives like Dynatrace or Coralogix, Grafana's differentiator is its open-source foundation. The core Grafana stack is community-driven, and the cloud product extends it with managed infrastructure, enterprise features, and cost controls. You're not locked into proprietary agents or data formats.
For teams already using OpenObserve or Uptrace and considering a managed path, Grafana Cloud offers a broader feature surface with the same commitment to open standards. A free tier is available with no time limit, and paid plans scale with usage.
Powerful, efficient, and user-friendly monitoring solution for servers, containers, and applications with instant insights and alerts.

NetData is a cutting-edge, open-source monitoring and troubleshooting tool designed for modern infrastructure and applications. It offers real-time, high-resolution metrics collection and visualization, enabling users to gain instant insights into their systems' performance.
Key benefits of NetData include:
NetData empowers DevOps teams, system administrators, and developers to identify and resolve performance bottlenecks quickly. Its user-friendly interface and powerful analytics capabilities make it an essential tool for maintaining optimal system health and performance in today's fast-paced, data-driven environments.
Pull-based monitoring system with a multi-dimensional data model, PromQL query language, built-in alerting, and a time series database built for cloud native environments.

Prometheus is the de facto standard for open source infrastructure monitoring. It collects metrics from your applications, systems, and services, stores them as time series data, and lets you query, visualize, and alert on that data. Originally inspired by Google's internal Borgmon system, it's now a graduated CNCF project (the second after Kubernetes) with a large community behind it.
The core model is pull-based: Prometheus scrapes metrics from instrumented targets at configurable intervals. This makes it straightforward to see exactly what's being collected and when. Targets can be defined statically or discovered automatically, which is where its Kubernetes integration shines. It continuously discovers pods, services, and nodes as they come and go, so you don't have to manually update your monitoring config every time your infrastructure changes.
Key capabilities:
For dashboards, Prometheus pairs naturally with Grafana, which can query it directly. Tools like Uptrace and OpenObserve also support Prometheus as a data source, extending what you can do with the metrics you're already collecting.
Prometheus is self-hosted, which means your metrics stay on your infrastructure. The entire project is Apache-licensed and community-governed under the CNCF.
Comprehensive monitoring and troubleshooting solution for microservices architectures, offering metrics, traces, and logs in a single pane.

SigNoz is a powerful, open-source observability platform designed for modern, cloud-native applications. It provides a unified solution for monitoring, troubleshooting, and optimizing your microservices architecture.
Key benefits of SigNoz include:
All-in-One Observability: Combine metrics, traces, and logs in a single platform, eliminating the need for multiple tools and reducing context-switching.
Cost-Effective: As an open-source solution, SigNoz offers significant cost savings compared to proprietary alternatives, especially for high-volume data ingestion.
Easy Setup: Get started quickly with a simple installation process and intuitive UI, making it accessible for teams of all sizes.
Customizable Dashboards: Create tailored views of your system's performance with flexible, drag-and-drop dashboard builders.
Distributed Tracing: Gain deep insights into request flows across your microservices, helping you identify bottlenecks and optimize performance.
Anomaly Detection: Leverage built-in anomaly detection capabilities to proactively identify issues before they impact your users.
Scalability: Designed to handle high-volume data ingestion, SigNoz scales effortlessly with your growing infrastructure.
Open Standards: Built on OpenTelemetry, ensuring compatibility with a wide range of technologies and future-proofing your observability stack.
By choosing SigNoz, you're not just adopting a monitoring tool; you're embracing a comprehensive observability solution that grows with your needs and empowers your team to maintain high-performing, reliable applications.
Coroot simplifies system monitoring by providing metrics, logs, traces, and profiling with zero instrumentation, leveraging eBPF technology.

Coroot is an innovative open-source observability platform that revolutionizes how developers and operations teams monitor and troubleshoot their systems. Here's what makes Coroot stand out:
Zero-instrumentation observability:
Comprehensive monitoring features:
User-friendly interface:
Built-in expertise:
Deployment and cost monitoring:
Open-source and cloud options:
Coroot simplifies the complex task of system observability, making it accessible to teams of all sizes. By leveraging cutting-edge technologies and providing a user-friendly interface, Coroot enables faster debugging, better development practices, and improved system reliability.
Uptrace is an OpenTelemetry-based platform that integrates traces, metrics, and logs to help monitor and optimize complex distributed systems.

Uptrace is an open-source observability platform built on OpenTelemetry, designed to help developers and operations teams monitor, understand, and optimize complex distributed systems. It offers a comprehensive solution for application performance monitoring (APM) with integrated tracing, metrics, and logging capabilities.
Key features and benefits:
All-in-one solution:
Flexible deployment options:
Cost-effective and predictable pricing:
OpenTelemetry integration:
Comprehensive monitoring dashboard:
Scalability:
Incident response:
By offering a unified platform for observability, Uptrace simplifies the monitoring process and provides valuable insights into application performance, helping teams optimize their systems and respond to incidents more effectively.
Monitor your entire IT infrastructure with 2,000+ plugins, automated discovery, and scalable architecture. Open source and enterprise solutions available.

Comprehensive IT monitoring that scales from small teams to enterprise environments with millions of services. Checkmk automatically discovers and monitors your entire infrastructure - from cloud providers to data centers, servers, networks, containers, and applications.
Key advantages include:
Multiple deployment options cater to different needs:
Advanced features include dynamic dashboards, business intelligence mapping, custom self-healing actions, and comprehensive SLA reporting. The platform combines infrastructure monitoring with log analysis, synthetic testing capabilities, and historical performance forecasting to provide complete visibility into your IT operations.
Monitor networks, servers, and cloud environments with flexible open-source solution. Custom checks, fast alerts, and complete infrastructure control.

Complete visibility across your entire IT landscape with this comprehensive open-source monitoring platform. Whether managing on-premises servers, cloud environments, or hybrid infrastructures, you get the flexibility and control needed for complex enterprise monitoring.
Key capabilities include:
Comprehensive monitoring solutions cover Kubernetes clusters, database performance, Windows and VMware environments, plus business-critical applications. The platform bridges monitoring with IT service workflows and security operations for unified visibility.
Enterprise-ready features include automation capabilities, API-driven processes, extensive integrations with existing DevOps tools, and professional support options. Built on open-source principles while delivering enterprise-grade stability, security, and customization options that adapt to your operational needs.
Unified platform for logs, metrics, traces and profiles with native compatibility for popular tools like OpenTelemetry, Prometheus, and Loki. No data silos, no usage limits.

A powerful observability platform that brings together logs, metrics, traces and profiles in one unified solution. Built on high-performance OLAP engines ClickHouse and DuckDB with NVMe storage, Gigapipe delivers exceptional speed and reliability.
Key advantages:
Perfect for engineering teams and DevOps professionals who need comprehensive observability without the complexity of managing multiple tools or worrying about data volume costs. Gigapipe's polyglot approach ensures you can work with your data your way, while the unified platform enables quick correlation between different data types for faster troubleshooting and deeper insights.
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