Open-source alternatives to Ethr

LibreSpeed is a self-hosted HTML5 network speed test tool used to measure download and upload speeds, ping, and jitter. It operates as a private server for measuring network performance without relying on third-party services. The system functions as a multi-backend performance tool that executes network tests across different server environments and geographic locations. It supports both PHP and Node.js backends and acts as a network telemetry collector by recording connection metadata and performance metrics into a database for historical analysis and reporting. The tool provides capabilit

This project is a command-line interface client for the Speedtest.net service, designed as a network performance tool to measure internet download and upload speeds and ping. It functions as an internet speed measurement utility that calculates network throughput and latency to determine overall connection quality. The tool provides network diagnostics and benchmarking capabilities directly from the command line. It supports the export of connection metrics as plain text or structured data, allowing for automated network monitoring and the tracking of internet performance over time.

This project is a Linux server benchmarking script written in Bash. It serves as a system for evaluating CPU, disk, and network performance by orchestrating a set of standardized diagnostic tools. The script integrates specialized utilities to measure storage throughput and latency across various block sizes, compute hardware scores for processor performance, and test network upload and download speeds using parallel connections. It is designed to generate comparative hardware reports and evaluate total network capacity across global locations. The tool includes a mechanism for exporting all

nanomsg is a distributed messaging middleware and scalable messaging library designed for moving data between machines and processes. It functions as a socket-based communication framework that routes data across different network transport layers. The library implements scalable messaging patterns, specifically request-reply and publish-subscribe, to handle high volumes of data across distributed systems. It provides tools for network performance benchmarking to quantify messaging throughput and latency. The framework supports distributed message routing and inter-process communication usin

This project is a collection of diagnostic tools designed for auditing IP quality, analyzing network stability, profiling server environments, and benchmarking hardware performance. It provides a suite of utilities to evaluate virtual private servers through hardware performance benchmarking and system environment diagnostics. The toolset includes a streaming service unlock checker to determine regional content access, an IP reputation audit tool for blacklist and geolocation verification, and a network quality analyzer for measuring latency and throughput. It covers broader capability areas

Bombardier is a concurrent HTTP load generator and performance benchmarking tool written in Go. It functions as a latency distribution analyzer and benchmarking utility designed to measure the throughput and response speed of HTTP services by simulating high-volume request loads. The tool provides specific capabilities for TLS benchmarking, supporting client certificate authentication and the ability to bypass server certificate verification. It distinguishes itself through the use of a token-bucket algorithm for precise request rate limiting and the use of templates to export benchmark resul

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

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

Netshoot is a Docker network troubleshooting toolkit and container image bundled with specialized utilities for DNS resolution, performance benchmarking, and TCP/IP packet inspection. It serves as a portable set of tools designed for diagnosing connectivity and routing issues within Docker and Kubernetes environments. The project is distributed as a tool-aggregated container image that can be deployed as a debugging sidecar or an ephemeral runtime. It supports namespace-joined execution, allowing the toolkit to attach to the network namespace of another process to inspect traffic and diagnose

This project is the core management framework for a security appliance, providing the primary infrastructure for firewall management, network intrusion prevention, and high-availability networking. It serves as the centralized system for controlling network security policies, filtering traffic, and administering a security appliance dashboard. The system is distinguished by its high-availability capabilities, which include synchronizing configurations and connection state tables across redundant nodes to enable automatic hardware failover. It also features a modular plugin architecture for ex

htrace.sh is a command-line diagnostic suite designed for profiling web traffic, auditing security configurations, and analyzing network connectivity for remote endpoints. It functions as a shell-based orchestration tool that wraps standard system utilities to perform modular diagnostic tasks and infrastructure analysis. The tool distinguishes itself by providing a unified interface for both HTTP request debugging and automated security scanning. Users can customize request parameters, including headers, methods, and proxy settings, to simulate specific client behaviors. It further automates

MTR is a network diagnostic tool that combines the functions of traceroute and ping to monitor packet loss and latency across every hop in a network path. It serves as an ICMP route analyzer and packet loss monitor designed to discover network paths and measure the performance of intervening routers. The tool functions as a network path visualizer, displaying real-time network health and connectivity data through either a text-based terminal interface or a graphical window. The project covers network path mapping and real-time path tracing to identify routers between a host and destination.

This project is a specialized toolset for profiling kernel latency, analyzing tracepoint frequency, and monitoring system-wide performance data. It functions as a kernel performance profiler, tracepoint analyzer, and a collection of utilities for the Linux ftrace and perf_events subsystems. The toolkit provides high-level abstractions via shell-scripted wrappers to manage complex kernel tracing interfaces. It distinguishes itself through the use of bucket-based event histograms to visualize the distribution of kernel events and the ability to identify functions exceeding specific latency thre

gping is a terminal-based network latency grapher and performance monitor. It functions as a cross-platform ping client that visualizes ICMP response times as real-time line graphs directly within the command line. The tool distinguishes itself by operating as a command execution time plotter, allowing the duration of any shell command to be graphed over time to analyze performance fluctuations. It supports multi-host latency plotting and provides shorthand identifiers for monitoring connectivity across different cloud infrastructure regions. The utility covers network diagnostics and observ

Mac-CLI is a collection of terminal commands and utilities designed for automating system management, hardware monitoring, and software configuration on macOS. It serves as a developer utility and automation tool for manipulating files, managing version control, and auditing installed packages from the command line. The project provides hardware monitoring capabilities to track real-time battery health, CPU temperature, and fan speeds. It also includes system automation tools for managing power states, disk usage, and network settings through a unified interface. The utility covers several f

Stenographer is a packet capture solution which aims to quickly spool all packets to disk, then provide simple, fast access to subsets of those packets. Discussion/announcements at stenographer@googlegroups.com

PacketFu, a mid-level packet manipulation library for Ruby

ZMap is a fast single packet network scanner designed for Internet-wide network surveys.

A high-performance DNS stub resolver for bulk lookups and reconnaissance (subdomain enumeration)

Masscan is a command-line network scanner designed for large-scale discovery and infrastructure reconnaissance. It identifies open ports across specific network segments or the entire internet by probing vast address ranges with high efficiency. The tool functions as an asynchronous packet engine, bypassing standard operating system kernel networking stacks to transmit raw packets directly from application memory. The project distinguishes itself through a specialized architecture that manages millions of concurrent connections by separating packet transmission and reception into independent

SSH server auditing (banner, key exchange, encryption, mac, compression, compatibility, security, etc)

SSLyze is an SSL/TLS security scanner and network encryption analyzer designed to identify vulnerabilities and misconfigurations in encryption settings. It functions as both a standalone tool for analyzing server certificates and cipher suites and a programmable Python security library for embedding automated scanning logic into larger applications. The tool distinguishes itself by supporting encryption analysis for both HTTP and non-HTTP network services, including mail, directory, and database protocols. It includes a security compliance validator that compares server configurations against

htop is a terminal user interface system monitor for Unix systems. It functions as an interactive process viewer and real-time resource visualizer, providing a dashboard to track CPU, memory, and load average metrics. The tool enables the sorting, filtering, and termination of active system processes and threads. It distinguishes itself through a text-mode interface that can render processes in a hierarchical tree structure to visualize parent-child relationships and allows for the assignment of CPU affinity to specific processor cores. The monitoring surface covers CPU utilization, memory a

Curl is a command-line tool and portable library for transferring data across a wide range of network protocols. It functions as a unified engine that abstracts diverse communication standards, allowing users and developers to move files and information between servers using a consistent interface. The project provides both a versatile command-line client for terminal-based automation and a stable programmatic interface for integrating complex network operations into applications. The system is distinguished by its protocol-agnostic core and its ability to manage both synchronous and asynchro

RedisInsight is a graphical user interface and management tool for browsing, analyzing, and administering Redis databases. It provides a visual environment for exploring key-value data structures, managing database instances, and performing data analysis across different operating systems and deployments. The tool distinguishes itself by providing dedicated visual managers for complex operations, including a vector database manager for configuring embeddings and similarity searches, a query workbench for executing raw commands and Lua scripts, and a performance monitoring dashboard for tracki

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

NetQuality is a network performance benchmarking suite that measures latency, bandwidth, and routing paths across IPv4 and IPv6 networks using TCP and ICMP probes. It functions as a BGP routing analyzer, identifying peering relationships and network bottlenecks by retrieving data from global routing databases, and as a dual-stack network tester that performs diagnostics simultaneously over both protocol stacks to compare performance and connectivity. The tool distinguishes itself through its TCP-based traceroute engine, which traces the full route packets take to a destination while identifyi