# API Load Testing Tools

> Search results for `load testing tool for simulating traffic on APIs` on awesome-repositories.com. 117 total matches; showing the first 50.

Explore on the web: https://awesome-repositories.com/q/load-testing-tool-for-simulating-traffic-on-apis

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## Results

- [angular/angular](https://awesome-repositories.com/repository/angular-angular.md) (100,360 ⭐) — Angular is a platform for building web applications using a component-based architecture. It provides a comprehensive suite of tools for managing encapsulated UI units, including hierarchical dependency injection, a declarative template system, and fine-grained reactivity through signals. The framework supports complex application requirements such as client-side routing, form management, and internationalization.

The project includes a command-line interface for scaffolding and build automation, alongside a testing ecosystem for unit and integration verification. It offers multiple rendering
- [grafana/k6](https://awesome-repositories.com/repository/grafana-k6.md) (30,874 ⭐) — k6 is a performance testing framework used to measure the scalability and stability of network services and APIs. It functions as a JavaScript load testing tool that uses a Go engine to simulate concurrent user traffic.

The tool enables the enforcement of service level objectives by comparing response time percentiles against quantitative performance thresholds. It also operates as a performance regression tool for continuous integration pipelines and a browser performance testing tool that executes scripts within a bundled headless browser instance.

Its capabilities cover workload scenario
- [hoppscotch/hoppscotch](https://awesome-repositories.com/repository/hoppscotch-hoppscotch.md) (79,618 ⭐) — Hoppscotch is an open-source API development ecosystem designed for building, testing, and debugging REST, GraphQL, and real-time APIs. It provides a unified platform that functions across web browsers, desktop applications, and command-line interfaces, allowing developers to manage the entire API lifecycle from a single environment.

The platform distinguishes itself through a highly interactive, command-driven interface that utilizes a global spotlight palette and keyboard shortcuts to streamline complex workflows. It supports advanced request manipulation and validation by executing JavaScr
- [loadimpact/k6](https://awesome-repositories.com/repository/loadimpact-k6.md) (30,891 ⭐) — 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
- [camel-ai/oasis](https://awesome-repositories.com/repository/camel-ai-oasis.md) (4,833 ⭐) — Oasis is an LLM-powered multi-agent social simulator and research tool designed to study synthetic social phenomena. It functions as a synthetic social network platform, replicating the infrastructure of social sites including user profiles, follow relationships, and content discovery mechanisms to model human-like social behaviors at scale.

The framework orchestrates large-scale agent populations, supporting up to one million autonomous agents. It distinguishes itself by translating language model outputs into concrete social actions and external tool executions through a tool-calling orches
- [informalsystems/tm-load-test](https://awesome-repositories.com/repository/informalsystems-tm-load-test.md) (47 ⭐) — tm-load-test is a distributed load testing tool (and framework) for load testing Tendermint networks and aims to effectively be the successor to tm-bench.
- [apple/foundationdb](https://awesome-repositories.com/repository/apple-foundationdb.md) (16,446 ⭐) — FoundationDB is an ACID-compliant distributed transactional key-value store. It functions as a scalable database engine that ensures strict serializability and data consistency across a cluster of servers using a shared-nothing architecture.

The system is distinguished by its multi-region replication capabilities, allowing data to be synchronized across different datacenters for high availability and disaster recovery. It utilizes optimistic concurrency control to manage distributed transactions and employs a majority-based coordination system to maintain cluster state.

The platform provides
- [locustio/locust](https://awesome-repositories.com/repository/locustio-locust.md) (27,516 ⭐) — Locust is a distributed performance testing framework that allows users to define complex system stress scenarios using standard Python code. By modeling concurrent users as classes with weighted tasks and lifecycle hooks, it enables the simulation of realistic user behavior across large-scale environments. The tool functions as a scalable load generator capable of orchestrating traffic across multiple worker nodes to measure system stability and responsiveness under heavy, real-world conditions.

The framework is distinguished by its protocol-agnostic architecture, which supports diverse comm
- [cloudposse/load-testing](https://awesome-repositories.com/repository/cloudposse-load-testing.md) (55 ⭐) — A collection of best practices, workflows, scripts and scenarios that Cloud Posse uses for load and performance testing of websites and applications (in particular those deployed on Kubernetes clusters).
- [apache/jmeter](https://awesome-repositories.com/repository/apache-jmeter.md) (9,233 ⭐) — Apache JMeter is a Java-based performance testing tool and multi-protocol traffic simulator used to analyze the stability and scalability of servers and networks. It functions as a distributed load testing framework that coordinates remote worker nodes from a single controller to generate high volumes of concurrent traffic.

The project is distinguished by its ability to simulate traffic across diverse backend systems, including HTTP, JDBC, LDAP, JMS, FTP, and TCP. It provides a headless command-line interface for automated execution and a reporting system that transforms raw sample logs into
- [aliesbelik/load-testing-toolkit](https://awesome-repositories.com/repository/aliesbelik-load-testing-toolkit.md) (243 ⭐) — Collection of open-source tools for debugging, benchmarking, load and stress testing your code or services.
- [istio/istio](https://awesome-repositories.com/repository/istio-istio.md) (38,226 ⭐) — Istio is a service mesh infrastructure that provides a centralized control plane to manage, secure, and observe communication between distributed microservices. It functions as a policy-driven network traffic controller, enabling developers to route, balance, and secure service-to-service traffic without requiring modifications to application code. The system enforces zero-trust security by utilizing mutual transport layer authentication to verify cryptographic identities for every network request.

The project distinguishes itself through a sidecar-less proxy architecture, which offloads netw
- [laminas-api-tools/api-tools-skeleton](https://awesome-repositories.com/repository/laminas-api-tools-api-tools-skeleton.md) (53 ⭐) — Skeleton Application for Laminas API Tools
- [mervinpraison/praisonai](https://awesome-repositories.com/repository/mervinpraison-praisonai.md) (5,592 ⭐) — PraisonAI is an autonomous AI agent platform that coordinates multiple LLM-powered agents for research, planning, and execution of complex workflows. It functions as a multi-agent orchestration framework, a workflow builder, and a Model Context Protocol server, while also providing retrieval-augmented generation through vector knowledge bases. Agents can interact via CLI, web, or standardized protocols with sandboxed code execution.

The platform distinguishes itself with a rich set of agent communication protocols, including A2A, REST, WebSocket, voice and telephony integration, and MCP, allo
- [expo/expo](https://awesome-repositories.com/repository/expo-expo.md) (50,111 ⭐) — Expo is a universal mobile framework designed to build native iOS and Android applications from a single codebase using web-standard technologies. It provides a comprehensive development environment that includes a unified runtime for testing, cloud-based infrastructure for compiling and signing native binaries, and automated tools for managing the entire mobile release lifecycle, including app store submission.

The framework distinguishes itself through a plugin-based native configuration engine that programmatically modifies project files, allowing developers to integrate native modules wit
- [weaveworks/flagger](https://awesome-repositories.com/repository/weaveworks-flagger.md) (5,362 ⭐) — Flagger is a Kubernetes operator designed to automate the lifecycle of application deployments through progressive delivery. It functions as a controller that monitors custom resource definitions to orchestrate complex release strategies, including canary, blue/green, and A/B testing. By continuously reconciling the desired cluster state with the actual environment, it ensures that deployments adhere to defined specifications while managing the underlying infrastructure required for traffic routing.

The project distinguishes itself through a sophisticated metric-driven analysis loop that eval
- [stephenjude/api-test-helper](https://awesome-repositories.com/repository/stephenjude-api-test-helper.md) (0 ⭐) — This is a collection of helper methods for testing and debugging API endpoints.
- [flet-dev/flet](https://awesome-repositories.com/repository/flet-dev-flet.md) (15,611 ⭐) — Flet is a cross-platform framework that enables developers to build interactive desktop, mobile, and web applications using only Python. By utilizing a declarative programming model, it allows for the construction of complex user interfaces through a hierarchical structure of components, removing the need for specialized knowledge of web-specific languages like HTML, CSS, or JavaScript.

The framework distinguishes itself by offloading visual rendering to a high-performance graphics engine while maintaining application logic within a centralized server-side environment. This architecture synch
- [buger/gor](https://awesome-repositories.com/repository/buger-gor.md) (19,290 ⭐) — Gor is a set of specialized utilities for recording, replaying, and shadowing network traffic to validate system behavior under real-world conditions. It functions as an HTTP traffic recording tool, a network traffic capture engine, and a system for duplicating live production traffic.

The project provides capabilities for recording real-time HTTP network traffic and storing it for later playback or analysis. It can duplicate live production network traffic and redirect it to a staging environment in real time, or replay recorded network requests against a target environment to validate syste
- [mactuitui/wgpu-load-test](https://awesome-repositories.com/repository/mactuitui-wgpu-load-test.md) (8 ⭐) — Examples of how different cards perform far better that others
- [gatling/gatling](https://awesome-repositories.com/repository/gatling-gatling.md) (6,923 ⭐) — Gatling is a load testing framework and traffic generation engine used to measure response times and error rates under heavy load. It functions as an as-code testing library, allowing users to define high-volume traffic simulations and performance tests through programming languages rather than graphical interfaces.

The system enables multi-language load simulation and the ability to model concurrent user traffic to identify infrastructure bottlenecks and stability limits. It supports a test-as-code workflow, where version-controlled scripts are integrated into build pipelines as performance
- [remscodes/ngx-testing-tools](https://awesome-repositories.com/repository/remscodes-ngx-testing-tools.md) (2 ⭐) — 🛠️ Provides high-level utilities and reduces boilerplate for testing Angular applications
- [django/django](https://awesome-repositories.com/repository/django-django.md) (87,878 ⭐) — Django is a full-stack web framework designed for rapid backend development. It provides an integrated environment for building data-driven applications by combining an object-relational mapping layer for database management with a modular request-response pipeline for handling HTTP traffic. The framework emphasizes security and maintainability, offering a suite of tools to protect against common web vulnerabilities while decoupling site structure from implementation through a centralized URL routing system.

A defining characteristic of the framework is its ability to generate production-read
- [shekhargulati/52-technologies-in-2016](https://awesome-repositories.com/repository/shekhargulati-52-technologies-in-2016.md) (7,311 ⭐) — This project serves as a comprehensive educational repository and technical reference collection, documenting a wide range of software engineering practices and modern development technologies. It provides a structured learning path for developers, curating tutorials and practical examples that cover the full lifecycle of application development, from initial project scaffolding to deployment and maintenance.

The repository distinguishes itself by offering deep technical insights into complex architectural patterns, including actor-based concurrency models for managing parallel tasks and cont
- [nikita-filonov/tests-coverage-tool](https://awesome-repositories.com/repository/nikita-filonov-tests-coverage-tool.md) (10 ⭐) — The Tests Coverage Tool is a comprehensive utility designed to measure code coverage for gRPC services based on their proto contracts. It provides detailed insights into various aspects of your service's coverage, helping you ensure that your tests thoroughly validate your gRPC endpoints. The…
- [harness/harness](https://awesome-repositories.com/repository/harness-harness.md) (36,937 ⭐) — Harness is an end-to-end developer platform and DevOps orchestration tool designed to automate software build, test, and deployment pipelines. It functions as a CI/CD platform and a source code management system for hosting and managing version-controlled repositories.

The platform provides a remote development environment that launches ephemeral, cloud-based coding spaces to ensure standardized setups. It also includes a centralized artifact registry for storing and managing versioned binary packages and container images used in delivery pipelines.

The system covers broad capability areas i
- [bytebytegohq/system-design-101](https://awesome-repositories.com/repository/bytebytegohq-system-design-101.md) (83,491 ⭐) — This project is a centralized engineering knowledge repository that provides a structured curriculum for mastering system design, architectural patterns, and fundamental software development workflows. It serves as a professional development resource for engineers, offering foundational knowledge and real-world case studies to support the design of scalable, secure, and efficient distributed systems.

The repository distinguishes itself through a visual-first approach to knowledge synthesis, distilling complex technical concepts into high-density graphical diagrams and succinct illustrations.
- [buger/goreplay](https://awesome-repositories.com/repository/buger-goreplay.md) (19,286 ⭐) — GoReplay is a network traffic recording and replay tool used to capture live HTTP and binary protocol requests. It functions as a traffic shadowing proxy that duplicates incoming network requests to test environments and a utility for recording traffic to local or cloud storage for later analysis and playback.

The system is capable of processing non-textual data formats, such as Thrift and Protocol Buffers, allowing for the capture and replay of specialized application-to-application communication.

The tool supports live traffic capture and asynchronous duplication to validate infrastructure
- [osrf/traffic-editor](https://awesome-repositories.com/repository/osrf-traffic-editor.md) (161 ⭐) — GUI, CLI, and ROS 2 messages for robot traffic flows in buildings
- [tsenart/vegeta](https://awesome-repositories.com/repository/tsenart-vegeta.md) (25,070 ⭐) — 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
- [lgsvl/simulator](https://awesome-repositories.com/repository/lgsvl-simulator.md) (2,450 ⭐) — A ROS/ROS2 Multi-robot Simulator for Autonomous Vehicles
- [cockroachdb/cockroach](https://awesome-repositories.com/repository/cockroachdb-cockroach.md) (32,207 ⭐) — Cockroach is a distributed SQL database designed to scale horizontally across multiple nodes while maintaining strict ACID compliance and global data consistency. It functions as a relational database engine that automatically partitions data into ranges, rebalancing them across a cluster to accommodate growing storage and throughput requirements. By utilizing a distributed consensus protocol, the system ensures that all nodes agree on the order of operations, providing fault tolerance and continuous availability even in the event of hardware failures.

The system distinguishes itself through
- [getanteon/anteon](https://awesome-repositories.com/repository/getanteon-anteon.md) (8,526 ⭐) — Anteon is a distributed load testing platform and automated performance testing suite designed to simulate high-traffic user scenarios and measure system performance across multiple global locations. It functions as an infrastructure anomaly detector and a service dependency mapper, providing a performance monitoring dashboard to track real-time resource usage across cluster instances.

The project distinguishes itself by combining distributed traffic generation with service dependency mapping to identify system bottlenecks through network-level tracing. It incorporates an automated validation
- [flutter/flutter](https://awesome-repositories.com/repository/flutter-flutter.md) (177,056 ⭐) — This project is a multi-platform UI framework designed for building applications that target mobile, web, and desktop environments from a single codebase. It utilizes a declarative paradigm where the user interface is defined as a function of application state, supported by a layered architecture that includes a high-performance rendering engine and a multi-platform compilation model.

The framework provides a comprehensive suite of developer tools, including hot reloading for real-time code injection and diagnostic utilities for monitoring application state and performance. It features a modu
- [hmaverickadams/dehashed-api-tool](https://awesome-repositories.com/repository/hmaverickadams-dehashed-api-tool.md) (276 ⭐) — A command-line tool to query the DeHashed API. Easily search for various parameters like usernames, emails, hashed passwords, IP addresses, and more.
- [apache/apisix](https://awesome-repositories.com/repository/apache-apisix.md) (16,767 ⭐) — This project is a high-performance, distributed API gateway designed to manage, secure, and observe traffic for microservices, serverless functions, and artificial intelligence model providers. It functions as a dynamic service proxy and cloud-native ingress controller, centralizing policy enforcement and traffic routing through a unified configuration interface that synchronizes state across multiple nodes in real time.

The platform distinguishes itself through a highly extensible architecture that utilizes a high-performance scripting engine to execute modular logic directly within the requ
- [openhec/snn-simulator-on-pynqcluster](https://awesome-repositories.com/repository/openhec-snn-simulator-on-pynqcluster.md) (102 ⭐)
- [sanjeed5/ai-conversation-simulator](https://awesome-repositories.com/repository/sanjeed5-ai-conversation-simulator.md) (46 ⭐) — A tool for simulating conversations between an AI assistant and a virtual user for testing and development purposes.
- [blender/blender](https://awesome-repositories.com/repository/blender-blender.md) (18,787 ⭐) — Blender is a professional 3D creation suite designed for modeling, animation, rendering, and video editing. It functions as an open-source 3D engine that provides a comprehensive framework for procedural geometry, physics simulation, and high-quality visual output. The platform is built upon a foundational architecture that utilizes data-block-based memory management and a dependency-graph-based evaluation system to handle complex scene transformations and geometry updates.

The software distinguishes itself through a highly modular, node-based procedural architecture that allows users to cons
- [matrixtm/mhddos](https://awesome-repositories.com/repository/matrixtm-mhddos.md) (16,224 ⭐) — MHDDoS is a command-line utility designed for volumetric stress testing and infrastructure resilience assessment. It functions as a comprehensive framework for simulating high-volume network and application layer traffic to evaluate the capacity and stability of web services and network infrastructure.

The tool distinguishes itself through its ability to generate complex, protocol-specific traffic patterns and raw packet structures. By employing dynamic header randomization and specialized payload injection, it simulates diverse request behaviors intended to test the effectiveness of security
- [carloop/simulator-program](https://awesome-repositories.com/repository/carloop-simulator-program.md) (69 ⭐) — Software for the CAN bus simulator on the Rasperry Pi
- [google-gemini/cookbook](https://awesome-repositories.com/repository/google-gemini-cookbook.md) (17,418 ⭐) — The Gemini Cookbook is a comprehensive collection of implementation patterns, code samples, and development guides designed for building applications with Google Gemini models. It serves as a central resource for developers to integrate multimodal generative artificial intelligence into their software, providing the necessary frameworks to manage model interactions, stateful workflows, and structured data extraction.

The repository distinguishes itself by offering specialized toolkits for autonomous agent orchestration, enabling the construction of agents that can execute code, browse the web
- [bigint/hey](https://awesome-repositories.com/repository/bigint-hey.md) (29,384 ⭐) — Hey is a command-line utility designed for HTTP load testing and API performance benchmarking. It functions as a concurrent request generator that simulates high volumes of traffic against target endpoints to evaluate service responsiveness, throughput, and stability under load.

The tool distinguishes itself by integrating specialized modules for cryptographic request signing and internal service authorization. It supports the generation of digital signatures for decentralized social protocols and validates backend requests using shared secret tokens, allowing for secure interaction with prot
- [yourls/yourls-test-suite-for-plugins](https://awesome-repositories.com/repository/yourls-yourls-test-suite-for-plugins.md) (2 ⭐) — The YOURLS test suite for plugins is a tool to test YOURLS plugins with standard PHPUnit tests.
- [rakyll/hey](https://awesome-repositories.com/repository/rakyll-hey.md) (19,772 ⭐) — 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
- [drakkar-software/octobot](https://awesome-repositories.com/repository/drakkar-software-octobot.md) (6,079 ⭐) — OctoBot is an open-source automated trading platform that connects to over 15 cryptocurrency exchanges, enabling users to deploy grid, dollar-cost averaging, market-making, and AI-driven trading strategies. It functions as a unified multi-exchange trading platform, a TradingView alert executor, and a crypto trading bot, all within a single system. The platform is built on an event-driven trading loop with a plugin-based strategy engine, an exchange-agnostic connector layer, and a cloud-synced profile store for multi-device consistency.

What distinguishes OctoBot is its integration of large la
- [autoscrape-labs/pydoll](https://awesome-repositories.com/repository/autoscrape-labs-pydoll.md) (6,919 ⭐) — pydoll is a Chrome DevTools Protocol automation library and headless browser controller used for web data extraction and parallel browser automation. It controls Chromium-based browsers via direct WebSocket connections, allowing it to manage isolated browser contexts and tabs while bypassing the overhead and detection associated with WebDriver.

The project features an anti-bot evasion framework that mimics natural human behavior, including mouse movements generated via Bezier curves and variable typing patterns. It provides specialized stealth capabilities to bypass behavioral analysis and au
- [crowdsecurity/crowdsec](https://awesome-repositories.com/repository/crowdsecurity-crowdsec.md) (12,574 ⭐) — CrowdSec is a collaborative, distributed security engine designed for threat detection and infrastructure protection. It functions as an intrusion detection system that parses logs and network traffic to identify malicious patterns, utilizing a bucket-based threshold detection model to aggregate events and trigger alerts. The platform is built on a modular architecture that includes a centralized local API server for managing security signals and a relational database for persistent storage of remediation decisions.

What distinguishes the project is its decoupled enforcement model, which offl
- [imperva/automatic-api-attack-tool](https://awesome-repositories.com/repository/imperva-automatic-api-attack-tool.md) (495 ⭐) — Imperva's customizable API attack tool takes an API specification as an input, generates and runs attacks that are based on it as an output.
- [google/bbr](https://awesome-repositories.com/repository/google-bbr.md) (5,926 ⭐) — BBR is a TCP congestion control implementation designed to maximize throughput and minimize delay by modeling the network bottleneck. It functions as a network throughput optimizer that adjusts data transfer speeds based on estimated bottleneck bandwidth.

The project includes a network condition emulator to simulate packet loss and latency for testing transport protocol performance. It also provides a performance analysis toolset for monitoring connection states and visualizing congestion control behavior.

The system covers broader capabilities in network performance analysis, connection sta