Sol-Explore is a JavaScript library that provides depth-first traversal functions for abstract syntax trees (ASTs) generated by solidity-parser, enabling users to navigate and analyze Solidity code structure. It is designed for developers working with Solidity code analysis, tooling, or compilers who need to traverse and process AST nodes with customizable callbacks for entering and leaving nodes. The library is available for both browser and Node.js environments and is distributed under the MIT license.