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Speedbump vs Toxiproxy: catalog facts
Speedbump	Toxiproxy
Free Free and open source under the Apache-2.0 license.	Free Free and open source under the MIT license.
Command line	Self-hosted, Command line
Simulates variable TCP latency Supports configurable latency patterns and combinations	Simulates latency, bandwidth limits, and connection failures Controls proxies through an HTTP API
It proxies TCP traffic.	Requires applications to route test connections through the proxy
Downloadable app	Downloadable app, Self-hosted
Open source	Open source
License: Apache-2.0	License: MIT
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 Checked October 8, 2026	Official website Full listing and sources Checked October 8, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.