Open-source alternatives to Hatoo Oha

wrk2 is a high-performance HTTP benchmarking tool and constant throughput load generator. It is designed to measure server stability and throughput by sending a fixed number of requests per second, functioning as a high-resolution latency profiler and a Lua-scriptable performance tester. The tool distinguishes itself through a scriptable interface that uses a high-performance just-in-time compiler to define complex request formats and custom response reporting logic. It employs high-resolution histograms to capture precise response time distributions and high-percentile latency data. The pro

Vegeta is an HTTP load testing tool and library designed to measure the performance and stability of web services. It functions as a command-line utility, a programmable package for integration into other applications, and a distributed load generator capable of splitting request rates across multiple machines. The tool is distinguished by its constant-rate request scheduler, which dispatches requests at a fixed frequency regardless of target response times. It employs lazy target streaming to maintain low memory usage during large tests and uses a binary-encoded storage format to minimize di

Plow is a suite of utilities used for generating HTTP load, measuring network performance, and visualizing live metrics. It functions as both an HTTP load generator and a benchmarking tool that measures latency and throughput by sending concurrent requests at configurable rates. The project includes a Socks5 and HTTP proxy client, allowing benchmark traffic to be routed through proxies to test services located behind network gateways. It also provides a real-time performance dashboard via web and terminal interfaces to visualize live metrics and latency histograms during active sessions. The

Fortio is a performance testing tool written in Go that generates constant request rates to measure latency histograms and response percentiles. It functions as a network performance benchmarker for analyzing system performance across HTTP and gRPC endpoints, and includes a specialized HTTP echo server for mirroring requests. The project distinguishes itself through a web-based HTTP load testing API used for triggering asynchronous tests and visualizing result data through graphs. It also provides server behavior simulation, allowing the echo server to inject artificial delays and vary respon

Beeswithmachineguns is a distributed load testing framework and cloud infrastructure orchestrator. It functions as an HTTP traffic generator that provisions fleets of virtual servers to simulate massive concurrent user traffic across multiple cloud regions to stress test web applications. The tool specifically manages the lifecycle of AWS EC2 micro instances, automating the provisioning of servers across different geographic zones and the subsequent termination of all active resources to prevent unnecessary billing costs. The system coordinates concurrent traffic scheduling and distributed r

Siege is an HTTP benchmarking utility and load testing tool used to analyze transaction rates and response times. It functions as a stress testing tool that pushes web servers to their limits to determine maximum sustainable load and failure points, while also serving as a performance analyzer for encrypted HTTPS connections. The tool distinguishes itself by simulating human browsing behavior through the use of random delays between requests and local management of cookies and authentication headers. This allows for more realistic user simulation and the assessment of server stability under c

This project is a performance benchmarking framework and network protocol stress tester designed to evaluate system stability under high-concurrency conditions. It functions as a command-line utility that simulates massive volumes of simultaneous requests to identify infrastructure bottlenecks and verify service reliability. The tool distinguishes itself through its protocol-agnostic orchestration, which allows for load testing across diverse standards including HTTP, WebSocket, gRPC, and Radius. It supports complex request configurations, enabling users to inject custom headers, binary data,

This project is a command-line utility designed for HTTP load testing and network stress testing. It functions as a benchmarking tool that generates high volumes of concurrent traffic to evaluate the performance, reliability, and throughput capacity of web applications and APIs under sustained load. The tool allows for precise control over traffic generation by enabling users to configure request parameters, including custom headers, authentication credentials, and specific HTTP methods. It manages load through a worker-pool system that regulates request frequency, allowing for both time-boun

This is a desktop HTTP client application used for constructing, sending, and analyzing HTTP and GraphQL requests. It provides a graphical interface for API development and testing, including a dedicated GraphQL client with schema-driven autocomplete and validation. The project features an integrated AI assistant that generates API requests from natural language prompts. It supports a complex organization system of spaces and collections with hierarchical authentication inheritance and recursive variable resolution for dynamic request values. The tool covers a broad range of capabilities, in

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

dperf is a high-performance network testing tool that generates massive multi-protocol traffic for benchmarking network devices and servers. It uses DPDK to bypass the kernel network stack, enabling line-rate packet generation and capture with zero-copy processing, and implements a full TCP/IP stack in user space to achieve millions of connections per second from a single server. The tool is designed for stress-testing Layer 4 load balancers and gateways, capable of simulating billions of concurrent TCP or UDP sessions and generating tens of millions of new connections per second. It supports

k6 is a developer-centric load testing suite and command-line load generator designed for network performance validation. It functions as a JavaScript load testing tool that utilizes a Go-based runtime engine to simulate concurrent user traffic and validate API responses across HTTP, gRPC, and WebSockets. The project distinguishes itself by using code rather than a graphical interface to define workload scenarios and performance thresholds. It features a pluggable protocol architecture and an extension ecosystem that allows for the addition of custom protocols and specialized testing capabili

This project is a Node.js web scraping framework designed to automate data extraction through a programmatic workflow of requests, parsing, and document interaction. It functions as a headless web crawler, an HTTP request manager, and a DOM parser and extractor. The framework distinguishes itself by combining a JavaScript execution engine to interact with dynamic content and a hybrid selection system that utilizes both CSS and XPath selectors. It includes specialized middleware for proxy rotation and cookie-jar session management to maintain authenticated states and manage automated traffic.

reconftw is an attack surface management framework and reconnaissance workflow orchestrator designed to automate the discovery, mapping, and monitoring of external digital assets. It operates as a modular tool-chain pipeline that coordinates a sequence of security tools to perform intelligence gathering and vulnerability scanning. The project distinguishes itself through a cloud-native deployment model that parallelizes scanning workloads across a fleet of remote VPS instances to bypass local resource constraints. It utilizes container-based environment isolation to ensure consistent executio

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

Zeebe is a cloud-native workflow engine and distributed state machine designed for business process orchestration using BPMN and DMN standards. It operates as a high-performance gRPC workflow runtime that executes complex business processes through a partitioned event-streaming architecture. The system also functions as an orchestrator for large language model agents, coordinating AI reasoning and tool use within deterministic business processes. The engine is distinguished by its peer-to-peer broker networking and a consensus-based data replication model that ensures high availability and fa

This project is a terminal-based log analyzer and real-time traffic monitoring system designed for web server environments. It processes raw server access logs to generate structured statistical insights, providing visibility into visitor behavior, bandwidth usage, and request latency. The tool functions as a high-performance utility capable of handling large-scale datasets through multi-threaded parsing and memory-efficient data structures. The software distinguishes itself by offering both an interactive terminal interface and a web-based dashboard that updates in real-time via WebSocket st

QuestDB is a high-performance, distributed time-series database designed for the ingestion, storage, and analysis of massive datasets. It functions as a real-time analytics platform that utilizes a columnar storage engine to optimize disk input and output, enabling efficient analytical scans and complex windowing operations on streaming data. The platform distinguishes itself through specialized capabilities for handling asynchronous time-series streams, including advanced join algorithms that align disparate data sets based on precise timestamp lookups. It supports high-volume ingestion thro

NETworkManager is a comprehensive suite of network administration tools designed for the deployment, monitoring, and diagnostic management of enterprise networks. It provides a centralized interface for subnet management, IP address configuration, and wireless network analysis. The project distinguishes itself by integrating a multi-protocol remote administration client that supports SSH, RDP, VNC, Telnet, and PowerShell sessions within a unified tabbed interface. It further differentiates its capabilities through hardware-level discovery using LLDP and CDP frames, alongside the ability to en

ScanCode Toolkit is a software composition analysis tool and scanning framework designed to identify open-source licenses and copyright statements in source code and binary files. It functions as an open-source license detector, a dependency vulnerability scanner, and a generator for standardized software bills of materials in SPDX and CycloneDX formats. The project is built as a plugin-based scanning framework, allowing the integration of custom detection logic, specialized analyzers, and modified scanning behaviors at runtime. It distinguishes itself through the ability to produce formal le

Redis is a high-performance in-memory key-value store that functions as a distributed cache, message broker, and NoSQL database. It provides sub-millisecond read and write access to data stored in RAM and can operate as a vector database for indexing high-dimensional embeddings. The system supports a wide range of data storage and synchronization primitives, including the management of strings, hashes, lists, sets, and JSON documents. It enables real-time data operations through atomic transactions, hybrid persistence using snapshots and append-only logs, and high-availability configurations

This project is a comprehensive collection of Python programming education materials, including tutorials, exercises, and curated code samples. It serves as a learning curriculum and software engineering toolkit, utilizing Jupyter Notebooks to combine executable code with descriptive educational text. The repository provides practical implementation guides for building large language model applications, such as retrieval-augmented generation systems, stateful AI agents, and machine learning workflows. It distinguishes itself by offering a structured approach to agentic coding workflows, cover

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

h8mail is an open-source intelligence tool for searching leaked credentials and compromised accounts across remote APIs and local data dumps. It functions as a credential leak hunter and email reconnaissance framework designed to identify exposed passwords and sensitive information using usernames, domains, IP addresses, and email hashes. The tool distinguishes itself through a recursive target expansion system that feeds newly discovered email addresses back into the search queue to broaden the scope of investigations. It also includes a local breach data parser that employs multiprocessing

Hyperfine is a command-line benchmarking tool used to measure the execution time of shell commands through multiple runs and statistical analysis. It functions as a comparative benchmarking utility and a shell performance analyzer, allowing for the evaluation of multiple commands against a reference baseline to determine relative speed. The tool distinguishes itself by isolating actual command performance through shell overhead correction and the ability to bypass the shell entirely using system calls. It supports parameterized execution, enabling benchmarks to run across a range of varying i

llmware is a Python framework for AI agent orchestration and model management, designed to coordinate multi-model workflows and autonomous agents. It provides a unified model catalog and standardized interface to execute specialized language models for complex research, analysis, and structured data generation. The project distinguishes itself through its heavy emphasis on local execution and quantized inference, allowing models to run on private infrastructure using CPU, GPU, and NPU acceleration via runtimes like ONNX and OpenVino. It features a specialized ability to translate natural lang

pyWhat is a Python-based data extraction tool designed to scan files and text for sensitive identifiers, credentials, and network artifacts using regular expressions. It functions as a pattern matching engine and PII scanner capable of identifying personal identifiers and sensitive data patterns across directories and binary files. The project specializes in the identification of unknown data formats through file signatures and the extraction of high-value identifiers, such as URLs, IP addresses, and phone numbers, from network capture files. It utilizes a rarity-based filtering system and sp