Sourcebot is a self-hosted platform for code comprehension that assists developers and AI agents in searching, navigating, and reasoning through extensive codebases, regardless of their size. It allows teams to index repositories from various sources, including GitHub, GitLab, and Bitbucket, enabling exploration through a cohesive interface that offers quick, multi-repository searches with sophisticated filtering options, regex capabilities, and queries tailored to specific programming languages. The platform features an "ask mode" that lets users ask questions in everyday language, while an integrated language model scours the indexed code, tracks references, and provides structured responses with inline citations linked to the corresponding code snippets. Beyond search functionalities, Sourcebot enhances the development experience by incorporating IDE-level navigation tools such as go-to-definition and find-references across all repositories, as well as a built-in file explorer that showcases syntax highlighting and complete visibility of code. This comprehensive set of features empowers developers to work more efficiently and gain deeper insights into their projects.