tcpkali ☆

« Back to VersTracker

Description:
High performance TCP and WebSocket load generator and sink

Type: Formula | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: Networking

Tags: load-testing networking websocket benchmarking tcp performance

Install: brew install tcpkali

About:
Tcpkali is a high-performance command-line tool designed for generating TCP and WebSocket traffic, serving as both a load generator and a data sink. It excels at creating a massive number of simultaneous connections with minimal system resources, making it ideal for stress-testing servers and network infrastructure. Its efficiency allows for precise benchmarking of connection handling and data throughput under extreme load.

Key Features:

High-performance engine capable of handling hundreds of thousands of connections
Low resource consumption (memory and CPU) per connection
Supports both raw TCP and WebSocket protocols
Flexible message generation and data streaming capabilities
Provides real-time connection and message statistics

Use Cases:

Stress-testing web servers and reverse proxies for connection limits
Benchmarking network infrastructure and load balancers
Validating WebSocket server performance and stability
Generating custom TCP traffic for integration testing

Alternatives:

wrk – wrk is highly optimized for HTTP, whereas tcpkali specializes in raw TCP/WebSocket connections and offers more granular control over connection patterns.
iperf3 – iperf3 focuses on maximum bandwidth throughput, while tcpkali is designed for connection scalability and message-oriented load testing.

Version History

Detected	Version	Rev	Change	Commit
Sep 12, 2024 11:37pm		0	VERSION_BUMP	4d153d1b