A tracing and debugging system may collect both performance related tracer data and snapshot data. The tracer data may contain aggregated performance and operational data, while the snapshot data may contain call stack, source code, and other information that may be useful for debugging and detailed understanding of an application. The snapshot data may be stored in a separate database from the tracer data, as the snapshot data may contain data that may be private or sensitive, while the tracer data may be aggregated information that may be less sensitive. A debugging user interface may be used to access, display, and browse the stored snapshot data.