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Toxiproxy vs Speedbump: catalog facts
Toxiproxy	Speedbump
Best for: Developers testing how applications handle network failures	Best for: Developers testing how software handles changing network latency
Free Free and open source under the MIT license.	Free Free and open source under the Apache-2.0 license.
Self-hosted, Command line	Command line
Simulates latency, bandwidth limits, and connection failures Controls proxies through an HTTP API All 3 strengths for Toxiproxy Simulates latency, bandwidth limits, and connection failures Controls proxies through an HTTP API Supports deterministic network fault testing	Simulates variable TCP latency Supports configurable latency patterns and combinations All 3 strengths for Speedbump Simulates variable TCP latency Supports configurable latency patterns and combinations Offers binaries and a container image
Requires applications to route test connections through the proxy	It proxies TCP traffic.
Downloadable app, Self-hosted	Downloadable app
Open source	Open source
License: MIT	License: Apache-2.0
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Sources for Toxiproxy github.com/shopify/toxiproxy Catalog checked October 8, 2026	Official website Full listing and sources Sources for Speedbump github.com/kffl/speedbump Catalog checked October 8, 2026

“Not stated” means we have not confirmed it. Features can vary by device and plan.