Logging
The access log and error log of your websites. The live views, where the files are, the JSON record format, the requests the edge answers itself, and how to follow one request from the access log to its errors.
Log your application's users
Put the user of your CMS or framework into your website's access log with the Elpan-Log-User response header. The header never reaches your visitors.
Resource Usage
What your account uses right now in storage, memory, CPU, and processes, against its limits, and how storage is split between your files, your databases, and your mailing list archives.
Processes
A live monitor of every process running under your account. Send a signal to a process, or stop one that misbehaves.