# What is teaRank?

teaRank is the measure of impact that an OSS project has on the software ecosystem. teaRank is used to accomplish several important functions:

* Quantify every OSS project’s impact in the software ecosystem
* Determine every project’s eligibility to receive TEA tokens from the ***tea*** Protocol

A project’s teaRank is one of its most salient features in the ***tea*** Protocol. Proof of Contribution assigns a teaRank to every open-source software project included in a supported package manager, regardless of whether it’s registered with ***tea***.