Open-source alternatives to Blackbox Exporter

The Windows Exporter is a service that collects system, performance, and hardware metrics from Windows servers and exposes them via a text-based HTTP endpoint for Prometheus to scrape. It functions as a system metrics collector and service monitor designed to provide observability across Windows environments. The project utilizes a modular collector design that gathers data through Windows Management Instrumentation, native performance counters, and registry keys. It also includes a text-file metrics importer that allows user-defined or third-party business metrics to be read from local plain

Qui is a BitTorrent cross-seeding manager, automation engine, and multi-instance torrent dashboard. It provides a unified web interface to manage multiple separate torrent client instances from a single location and functions as an authentication gateway using OpenID Connect to protect backend API endpoints. The project specializes in identifying and adding matching torrents across different trackers to increase seeding ratios. It utilizes hardlink-based file replication to satisfy multiple tracker layouts without duplicating disk space and features a rule-based automation engine that execute

kube-prometheus is a monitoring stack deployment and orchestration framework. It uses an operator pattern to automate the installation and lifecycle management of Prometheus and Alertmanager via custom resource definitions. The project focuses on scaling data collection through hash-based target sharding and topology-aware distribution to reduce cross-zone traffic. It implements a sidecar-based configuration reloading mechanism and utilizes consistent hashing to distribute scrape targets across multiple instances. The system covers broad observability capabilities including metric data colle

VictoriaMetrics is a high-performance, scalable time series database and observability platform designed for long-term storage and analysis of metric, log, and trace data. It functions as a unified backend for monitoring ecosystems, offering full compatibility with industry-standard protocols and query languages. The system is built to handle massive data volumes through a distributed architecture that supports horizontal scaling and efficient data lifecycle management. The platform distinguishes itself through a storage engine that utilizes consistent hashing for data sharding and log-struct

Vector is a high-performance observability data pipeline designed to collect, transform, and route logs, metrics, and traces across distributed infrastructure. It functions as a modular engine that decouples data ingestion from processing and transmission, utilizing a component-based architecture to connect diverse sources to multiple destinations. The project distinguishes itself through a focus on reliability and flow control. It implements backpressure-aware data movement to prevent data loss during traffic spikes and utilizes disk-backed event buffering to ensure durability during network

Podinfo is a Go-based microservice template designed for Kubernetes, providing a standard pattern for building and testing containerised applications. It exposes REST endpoints for health checks, version information, and configuration, and supports environment-driven configuration for containerised deployment. The project distinguishes itself with built-in capabilities for resilience testing, including fault injection middleware that can inject random errors, latency spikes, or status code mutations. It also offers JWT token-based authentication for stateless request validation, Prometheus me

The AWS Cloud Development Kit is an infrastructure-as-code framework that enables developers to define and provision cloud resources using familiar programming languages. By utilizing construct-based synthesis, it translates high-level, object-oriented code into declarative templates, allowing for the automated management of complex cloud environments through a centralized, code-driven control plane. The framework distinguishes itself through its ability to model infrastructure as a dependency-aware resource graph, ensuring that components are provisioned and updated in the correct order. It

Telegraf is a modular, cross-platform telemetry pipeline designed to collect, process, and route metrics from diverse infrastructure, applications, and hardware. It functions as a server-side middleware that normalizes heterogeneous data into a unified format, enabling consistent monitoring across complex environments. By utilizing a plugin-driven architecture, the agent manages the entire lifecycle of telemetry data from initial ingestion to final transmission. The project distinguishes itself through a declarative, configuration-driven execution model that allows users to define complex dat

Seesaw is a traffic distribution platform based on Linux Virtual Server technology. It functions as a load balancer for managing high-availability network clusters, utilizing a BGP anycast routing controller to advertise and withdraw virtual IP addresses to direct traffic to the nearest available node. The system includes a direct server return orchestrator that allows backend servers to send outbound traffic directly to clients. It also provides a cluster management command line interface for controlling reload configurations and triggering failovers between nodes. The platform covers backe

Nezha is a multi-server infrastructure monitor and website uptime monitor that provides a centralized dashboard for tracking real-time resource utilization and system health. It functions as a protocol server and alerting engine, utilizing remote agents to collect telemetry data across multiple operating systems. The system distinguishes itself with a web-based remote administration interface, allowing users to execute maintenance commands and manage scheduled tasks on remote hosts via a browser-based terminal. It also integrates a Model Context Protocol server to provide a secure HTTP entry

NTrace-core is an open-source network diagnostic toolset that combines traceroute and MTR techniques with geographic IP geolocation, path MTU discovery, and multi-protocol probing. It functions as a command-line utility and a local web server, providing both a terminal-based interface and a browser-based UI for tracing network paths and analyzing hop-by-hop performance. The tool distinguishes itself through a modular architecture that includes a community probe network for executing traceroutes from geographically dispersed agents, a token-gated API for authenticating remote requests, and an

This library is an instrumentation framework for Rust applications designed to record and expose performance metrics compatible with the Prometheus monitoring system. It provides tools for tracking custom application state and host-level system resource usage, such as CPU and memory consumption, to ensure operational visibility. The framework is built for high-throughput environments, utilizing thread-local storage and atomic operations to minimize synchronization overhead during data collection. It leverages compile-time metric definitions and static typing to eliminate dynamic lookups, ensu

Pi.Alert is a self-hosted local area network monitoring utility and scanner that catalogs connected hardware, tracks real-time online status, and alerts administrators to unauthorized devices. It combines multiple discovery methods including address resolution protocol requests, dynamic host configuration protocol lease parsing, and domain name system query logs to comprehensively locate and identify active equipment. The application serves a centralized web-based management interface backed by a relational database inventory to store device metadata, user classifications, and historical acti

Gatus is a service health monitoring tool and automated status page that tracks the availability and performance of endpoints. It functions as a multi-protocol uptime monitor, validating service health through response conditions, certificate expiration checks, and multi-step workflow executions. The system distinguishes itself by supporting a wide range of communication standards including HTTP, TCP, UDP, WebSocket, gRPC, and DNS. It enables the creation of developer-oriented dashboards that display real-time uptime, publish incident announcements, and generate dynamic uptime badges for exte

This library provides a framework for instrumenting Java applications to track performance and system-level statistics. It enables the definition and collection of metrics such as counters, gauges, and histograms, while automatically capturing runtime health indicators like memory usage, thread activity, and garbage collection performance. The project distinguishes itself through a registry-based aggregation model that decouples metric recording from data exposition. It supports thread-safe atomic instrumentation for high-frequency data collection and offers flexible export mechanisms, includ

Offline is a JavaScript library that provides an offline-first framework for web applications, centered on monitoring network connectivity and managing the application's response to connection state changes. It detects transitions between online and offline states by listening to browser events and emits custom events that allow other parts of the application to react accordingly. The library distinguishes itself by combining event-driven connectivity detection with automatic request queuing and retry. When a request fails due to lost connectivity, it is captured and queued in memory, then au

Blocky is a stateless DNS proxy that functions as a network-wide ad-blocker and content filter. It operates as a single binary or Docker container with no database or persistent state, accepting DNS queries over UDP, TCP, HTTPS, TLS, QUIC, and HTTP/3 through a unified plugin-based query pipeline. The core of the system is a client-group policy engine that assigns devices to named groups and applies per-group blocklists, allowlists, and upstream resolvers, with all configuration changes applied through hot-reloading without requiring a restart. The project distinguishes itself through its modu

This is a Prometheus Python client library used for instrumenting Python applications. It provides the tools necessary to record counters, gauges, and histograms within a process to monitor application health and expose that data as a Prometheus exposition format provider. The library enables cloud native observability by allowing developers to define custom telemetry and track internal application events. It transforms internal application data into a standardized text format required by Prometheus scrapers for collection. The project covers a variety of monitoring and observability capabil

kscan is a network security scanner and service fingerprinter used to discover active hosts and open ports. It functions as a network protocol analyzer and internal network mapper to identify reachable gateways and analyze the network surface area of target environments. The tool integrates external asset discovery by retrieving target hosts through external intelligence services and verifying their availability. It also operates as a credential brute force tool, testing authentication strength across multiple protocols using automated username and password dictionaries. The project covers n

Gitingest is a Git repository analysis and conversion service that transforms code repositories into structured plain-text summaries optimized for large language model consumption. It provides HTTP API endpoints and Python functions to integrate repository processing into AI pipelines and applications, with S3-compatible storage for persisting and retrieving generated digests. The service is packaged as a Docker container with all dependencies bundled for consistent deployment across environments. The project distinguishes itself through asynchronous processing of multiple repositories concur

👀 A Kubernetes cluster resource sanitizer

cAdvisor is a container resource monitoring agent and performance analyzer that collects and exports CPU, memory, network, and disk usage statistics from running containers. It functions as a telemetry tool for discovering containers across various runtimes and serves as a Prometheus-compatible metrics exporter. The agent distinguishes itself by analyzing Linux control groups to provide visibility into resource consumption and limits. It utilizes kernel perf events and NUMA statistics for low-level hardware performance tracking and diagnostics, and it can identify out-of-memory kill events th

Watchtower is a Docker container update automator that monitors registries for new image pushes and automatically restarts containers with the latest versions. It functions as a container lifecycle manager, handling the process of bringing running containers up to date without manual intervention. The service includes specialized controls to manage deployment risk and precision, such as image age deferral and deployment cooldowns to protect against buggy releases. It supports image tag pinning to restrict updates to specific version series and can operate as a self-updating service to maintai

Hatchet is an open-source durable workflow engine and task orchestration platform. It provides a framework for building and executing fault-tolerant, multi-step pipelines as directed acyclic graphs (DAGs), with automatic retries, scheduling, and real-time observability. The system is built around durable task checkpointing, which persists execution state after each step so work can resume from the last checkpoint after a worker crash or restart, and it supports event-driven task resumption that pauses a task until a matching external event arrives. The platform distinguishes itself through it

GreptimeDB is a distributed, open-source time-series database built for unified observability. It stores and queries metrics, logs, and traces together in a single columnar engine, supporting both SQL and PromQL for analysis. The database is designed as a Kubernetes-native operator with a decoupled compute and storage architecture, enabling horizontal scaling and multi-region deployment. What distinguishes GreptimeDB is its role as a multi-protocol ingestion gateway, accepting data through OpenTelemetry, Prometheus Remote Write, InfluxDB, Loki, Elasticsearch, Kafka, and MQTT protocols without

WatchYourLAN is a self-hosted network discovery and monitoring tool written in Go. It scans local network interfaces using ARP requests to detect connected devices, tracks their online and offline status over time, and identifies when new or previously unseen hosts appear on the network. The application stores host data and connection history in either SQLite or PostgreSQL, and can export metrics to InfluxDB or expose a Prometheus endpoint for long-term storage and visualization in dashboards like Grafana. The tool provides a REST API for programmatic management of monitored hosts, including