Open-source alternatives to Cloudflare

ntopng is a web-based network traffic monitoring tool and flow data aggregator. It functions as a network security monitor, an SNMP network management system, and an industrial protocol analyzer for OT and SCADA environments. The system provides specialized inspection for industrial protocols such as Modbus, DNP3, and IEC 60870. It distinguishes itself through behavioral threat detection, encrypted traffic analysis via handshake fingerprinting, and the ability to identify hardware and operating systems using DHCP and MAC address patterns. Its broader capabilities include real-time traffic an

WindowsSpyBlocker is a suite of utilities designed to stop operating system data collection and tracking by applying firewall rules, hosts file blocks, and telemetry restrictions. It functions as a telemetry blocker and firewall manager that prevents the operating system from sending usage data to remote servers. The project features a specialized connectivity modifier for adjusting the network connectivity status indicator to prevent external reporting. It includes a network traffic auditor to capture and analyze system traffic to identify spying activities, alongside a manager for DNS and h

multi-v2ray is a management panel and orchestration system for deploying and configuring V2Ray and Xray cores. It functions as a multi-user proxy manager that uses containerized deployments to isolate proxy instances and manage user accounts through a central web interface. The system distinguishes itself by integrating a CDN proxy gateway to tunnel traffic through content delivery networks and hide server origins. It includes an orchestrator for automated Xray network proxy installation and provides tools to generate shareable configuration strings and connection links for client provisionin

ThreatMapper is a cloud native application protection platform and infrastructure security scanner. It functions as a vulnerability management system and cloud workload telemetry collector designed to monitor workloads and detect security risks across cloud and container environments. The platform distinguishes itself through a network traffic visualizer that uses machine learning to classify communication patterns and a graph-based attack mapping system to identify high-risk paths between vulnerabilities and network dependencies. Its broader capabilities cover cloud infrastructure complianc

iperf is IP network measurement software designed to quantify data transfer rates and network stability. It functions as a network performance benchmarking tool that tests capacity and throughput between two hosts to identify bottlenecks and performance limits. The tool specifically measures maximum bandwidth and packet loss over IP networks using TCP and UDP protocols. It also serves as a network data exporter, outputting performance results in JSON format for programmatic analysis and integration. The software covers a range of capabilities including network throughput analysis and traffic

Zeek is a network analysis framework and security monitoring tool that transforms raw network packets into high-level semantic logs. It functions as an application protocol analyzer and network intrusion detection system designed to extract meaning from network traffic and monitor for malicious activity. The system focuses on archiving network activity and maintaining historical records of application-layer state for forensic investigation and auditing. It utilizes a combination of modular protocol analyzers and customizable detection policies to perform deep semantic analysis of numerous app

This project is an Android RPA framework designed for automating user interfaces and system tasks on rooted Android devices using Python and ADB. It provides a suite of tools for rooted device management, allowing for programmatic control of system settings, application lifecycles, and shell command execution via a remote API. The framework distinguishes itself through a combination of dynamic instrumentation and AI integration. It can inject scripts into running processes to hook Java interfaces and modifies application behavior in real time. Additionally, it supports large language model in

Maltrail is a malicious traffic detection system used for network intrusion detection. It consists of a network intrusion sensor for monitoring interfaces, a threat intelligence aggregator for syncing blacklists, and a detection engine that identifies security threats through signature matching and heuristic attack patterns. The system distinguishes itself through a distributed sensor architecture that collects traffic data from multiple remote probes and forwards events to a central analysis server. It employs heuristic behavioral analysis to identify unknown threats, such as port scanning o

Ecapture is a suite of specialized auditing tools designed to capture plaintext database queries, log executed shell commands, forward packet captures, and decrypt TLS traffic. The system extracts plaintext content from encrypted communications and TLS master secrets without requiring CA certificates. It further monitors data interactions by capturing SQL queries from database instances and recording commands from shell environments for host-level auditing. The toolset includes capabilities for network traffic analysis, exporting captured data to pcapng files, and forwarding events to extern

Kyanos is a diagnostic toolset for network analysis that uses eBPF to measure packet latency and trace traffic from the network card to the application. It functions as a kernel latency profiler and network performance monitor, providing capabilities to map external dependencies and capture network traffic. The project is distinguished by its ability to perform automatic SSL traffic decryption, converting encrypted requests and responses into plaintext for analysis. It further isolates bottlenecks by attributing latency across multiple stages, specifically tracing the time packets spend withi

bandwhich is a command-line network utility and terminal bandwidth monitor designed for real-time traffic analysis. It functions as a process-based traffic tracker that links network bandwidth usage directly to the system processes and remote hosts responsible for the data transfer. The tool provides a terminal user interface for monitoring active connections and identifying data-consuming applications. It performs background reverse DNS lookups to associate remote IP addresses with human-readable hostnames and tracks cumulative data utilization over the duration of a capture session. Its br

Surge is a network traffic routing and configuration system designed to categorize and steer network requests using curated rule sets, domain lists, and IP databases. It provides the data structures and filtering logic necessary to manage how application traffic is directed across proxies, direct connections, or regional gateways. The project distinguishes itself through granular traffic identification and steering. It identifies network requests by matching them against system process names, user-agent strings, and geographic IP ranges to apply specific routing policies. This allows for the

Somo is a command line network utility and connection monitor used for filtering, sorting, and formatting network connection lists. It functions as an interactive process killer, allowing users to identify and terminate network processes based on their active connection data. The tool provides specialized network monitoring capabilities, including active socket and port tracking with port-to-service name resolution. It enables the administration of system sockets by sending termination signals to close specific network connections. Data management is handled through predicate-based filtering

Chef is a configuration management platform and infrastructure as code framework used to automate the deployment and maintenance of infrastructure state across a fleet of servers. It operates as an idempotent automation engine, ensuring systems converge to a desired state by applying only the necessary changes to resolve differences. The system functions as a multi-platform server orchestrator capable of managing infrastructure across different operating systems, cloud providers, and hardware architectures. It includes a dedicated infrastructure testing framework to verify configuration code

Komari is a self-hosted server monitoring system and cross-platform agent used to track system resource metrics and health across Linux, Windows, and Android servers. It provides a centralized dashboard for observing server performance and managing infrastructure privately. The project features a web-based remote terminal that utilizes bidirectional connections to execute commands and manage remote servers through a shell interface. It also includes a network connectivity monitor for measuring reachability and latency via ICMP, TCP, and HTTP requests, as well as a traffic usage tracker to mon

VeryNginx is a Lua-based Nginx extension and programmable web application firewall. It provides a management control panel and a traffic monitoring dashboard to configure server settings and analyze request statistics without manual configuration file edits. The project implements a programmable security layer to filter malicious traffic and block common web attacks, such as SQL injection and directory traversal. It includes tools for bot traffic restriction through request rate limiting and browser identity verification. The system covers traffic management via URI routing and redirection,

This project is an educational resource providing a comprehensive development tutorial for writing and loading eBPF programs using C, Go, and Rust within the Linux kernel. It serves as a technical guide for developing custom logic to execute directly in the kernel. The materials cover specialized domains including kernel observability and tracing, security implementation for intrusion detection, and high-performance network engineering for packet filtering and load balancing. It also includes dedicated manuals for Linux kernel tracing and the use of kprobes, uprobes, and tracepoints. The pro

GUI.for.SingBox is a desktop graphical interface client for managing the sing-box network proxy core. It functions as a network proxy manager and subscription manager, allowing users to configure routing rules, organize proxy profiles, and synchronize remote proxy server lists from external subscription providers. The application distinguishes itself through an event-driven plugin architecture and a script-based configuration middleware, enabling users to extend core functionality and programmatically modify configuration values. It also features a system for cross-platform settings synchroni

GeoIP2-CN provides curated datasets and binary database files designed to identify network addresses originating from mainland China. It provides a GeoIP2 China database and a routing list formatted as a MaxMind compatible database for use with network tools. The project enables proxy traffic management by distinguishing between domestic and international IP addresses. This allows for regional network routing and the application of decision logic to separate traffic paths based on geographic location. The system implements IP identification through MMDB-based lookups, binary-search range mat

GhostTrack is an open-source intelligence (OSINT) framework that aggregates geographic, network, and social identity information from public data sources. It functions as a digital footprint analyzer, collecting various pieces of publicly available information to build comprehensive profiles of target individuals. The framework combines multiple investigative capabilities into a single tool, including IP address geolocation, phone number intelligence, and social media username discovery. It distributes queries across external data services to maximize coverage and accuracy, resolving IP addre

Inspektor Gadget is an eBPF observability toolset and program framework designed for tracing Linux systems and debugging Kubernetes nodes. It provides a suite of tools to collect kernel-level telemetry and export system metrics via the OpenTelemetry standard. The project distinguishes itself by packaging inspection tools as OCI-compliant container images, allowing for standardized distribution and deployment across clusters and hosts. It employs a modular data processing pipeline that utilizes WebAssembly modules to transform and filter telemetry, and leverages Compile Once Run Everywhere for

React Native Debugger is a standalone developer application for inspecting and debugging JavaScript runtimes in mobile applications built with React Native. It provides a dedicated interface to monitor the runtime state, network requests, and console logs of a remote mobile environment. The tool integrates specialized inspectors for Redux state management and GraphQL client debugging, allowing for time-traveling state transitions and the analysis of queries, mutations, and local cache. It also features a component hierarchy viewer for visualizing and modifying UI properties in real time. Bro

Netfox is an iOS and macOS network debugging library designed to intercept and monitor HTTP traffic. It functions as an in-app HTTP traffic inspector that captures request headers and response bodies for real-time network analysis. The tool provides a network performance monitor to calculate response times and data sizes, as well as a network log exporter for sharing captured request and response data via email. The project covers network analysis capabilities including traffic filtering to exclude specific URLs, request body capture, and a debug interface that can be toggled via programmati

Tproxy is a set of command-line utilities designed for throttling bandwidth, simulating network latency, proxying TCP traffic, and analyzing connection stability. It provides a toolset for redirecting network traffic from local ports to remote destinations while monitoring the resulting connection behavior. The project differentiates itself by combining traffic manipulation with diagnostic monitoring. It can introduce configurable packet delays and cap upload and download transfer speeds to simulate constrained or low-bandwidth network environments. Beyond traffic control, the utilities incl

This project is a comprehensive educational resource and curriculum focused on site reliability engineering, distributed systems, and infrastructure operations. It provides technical guides, a systems engineering course, and instructional manuals designed to teach the principles of managing large-scale computing environments. The curriculum covers high-level architectural design for scalability and resilience, including fault-tolerant infrastructure, high-availability patterns, and microservices decomposition. It emphasizes the practical application of site reliability engineering through the

Cartography is a graph-based infrastructure visualization and security analysis framework. It ingests data from diverse cloud, identity, and software-as-a-service providers to model complex relationships between resources, users, and security findings within a centralized graph database. By mapping these interdependencies, the platform enables organizations to gain visibility into their environment and identify potential security risks through graph traversal queries. The platform distinguishes itself through its ontology-based normalization and cross-platform entity correlation, which map he