PDF Mantis is a open source Java based high level API which aims to simplify PDF data extraction.

Great Expectations is the leading tool for validating, documenting, and profiling your data to maintain quality and improve communication between teams

Simulate APIs, integrations, and environments at enterprise scale.

Postman is an API platform for building and using APIs. Postman simplifies each step of the API lifecycle and streamlines collaboration so you can create better APIs—faster.

a scalable synthetic data generation platform focused on automated data creation for complex test scenarios.

Testing and validating REST services in Java is harder than in dynamic languages such as Ruby and Groovy. REST Assured brings the simplicity of using these languages into the Java domain.