> For the complete documentation index, see [llms.txt](https://docs.put.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.put.com/library/introduction.md).

# Introduction

The PUT Program Library (PPL) is a collection of on-chain programs targeting the Sealevel parallel runtime. 

These programs are tested against PUT's implementation of Sealevel, put-runtime, and deployed to its mainnet. 

As others implement Sealevel, we will graciously accept patches to ensure the programs here are portable across all implementations.