httmock vs responses

Side-by-side — pricing, strengths, tradeoffs, and fit.

httmock

A mocking library for requests in Python to test HTTP interactions.

responses

A utility library for mocking out the requests Python library.

At a glance

Open SourceFree Tier
◌ Declining·From $0
Open SourceFree Tier
● Established·From $0

Overview

One-liner

A mocking library for requests in Python to test HTTP interactions.

One-liner

A utility library for mocking out the requests Python library.

Maturity

Declining

Maturity

Established

Open source

✓ Yes

Open source

✓ Yes

Pricing

Free tier

✓ Available

Open source — free to use

Free tier

✓ Available

Open source — free to use

Starts at

$0

Starts at

$0

Model

Flat rate

Model

Flat rate

Enterprise

✕ None

Enterprise

✕ None

Best for

✓ Best for

Developers who need to mock HTTP responses for testing Python applications
Teams working on projects that require interaction with multiple APIs and need isolated testing environments

✓ Best for

Developers who need to mock HTTP responses for testing purposes
Projects where internet connectivity is unreliable or unavailable during testing
Teams that require consistent and predictable test results without external dependencies

Not ideal for

✕ Not for

Projects requiring real-time data from external services during tests
Applications where the focus is on performance testing rather than functional testing

✕ Not for

Scenarios requiring real-time interaction with live APIs
Testing environments where network behavior needs to be accurately simulated

Strengths

↑ Strengths

Mocks HTTP responses for testing purposes
Supports both Python 2.6+ and 3.2+
Simplifies writing tests by simulating network conditions

↑ Strengths

Simplifies testing by mocking HTTP responses
Does not require an internet connection for tests
Easy to use with popular Python testing frameworks

Weaknesses

↓ Weaknesses

No active development or maintenance
Complex setup for advanced scenarios
Limited support for asynchronous testing

↓ Weaknesses

Limited documentation and examples for advanced use cases
Small community support and slow issue resolution
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