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Pact

by Pact Foundation

Consumer-driven contract testing framework

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Reviewed by the Softwares.com Editorial Team · Last updated June 2026 · How we rate

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Key facts

Vendor
Pact Foundation
Pricing
Open source - Free
Free tier
Yes
Platforms
Self Hosted, Api
Best for
Developers, Qa Engineers
Editor rating
4.4 / 5
Founded
2013
Headquarters
Remote

What is Pact?

Pact is a software testing tool from Pact Foundation. An open-source contract testing framework that verifies integrations between services by capturing consumer expectations, paired with the PactFlow broker.

Pact uses open source pricing and offers a free tier you can start on without a credit card. Free.

It's best suited to developers, qa engineers and runs on Self Hosted, Api.

Standout strengths include catches integration breaks early, consumer-driven contracts, many language libraries. Worth weighing: conceptual learning curve, broker setup for teams.

Pact pricing

Open Source
Free
Get Open Source

Pros

  • Catches integration breaks early
  • Consumer-driven contracts
  • Many language libraries

Cons

  • Conceptual learning curve
  • Broker setup for teams

Pact vs alternatives

See all Pact alternatives →

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Frequently asked questions

What is Pact?

An open-source contract testing framework that verifies integrations between services by capturing consumer expectations, paired with the PactFlow broker.

How much does Pact cost?

Pact is open-source-priced. It has a free tier.

Does Pact have a free trial?

Pact offers a free tier rather than a time-limited trial.

What platforms does Pact support?

Pact is available on Self Hosted, Api.