bottom (btm) vs Supervisor

bottom is a free graphical system and process monitor that runs in a terminal on Linux, macOS and Windows. It charts CPU use for each core and as an average, along with RAM and swap over time. Network and disk I/O are graphed too, with a control for zooming the displayed time interval. Its process widget lets users display, sort and search process information, use tree mode and send kill signals. Other widgets show disk capacity and use, temperature sensors and battery use. Appearance and behavior can be changed through command-line options or a configuration file, including themes, layout, widget behavior and filtering. An htop-inspired basic mode offers a simpler view, and a selected widget can be expanded to fill the terminal. A read-only option blocks actions that affect the system, such as stopping processes. Installation is documented through package managers, Cargo and pre-built release binaries. Official platform support covers macOS, Linux and Windows; architecture support varies by system. Android and some other systems may work unofficially with limited testing and support.

Supervisor is a free client/server system for starting, monitoring and controlling processes on UNIX-like operating systems. It can restart processes after crashes and report their status. Administrators set per-process options in an INI-style configuration file, including failed-process restarts and automatic log rotation. Priorities and groups let related processes be started or stopped together.

Control is available through a command-line client, an optional browser interface and an XML-RPC interface. The browser view can display and control process status when the HTTP server is enabled; authentication can be required for commands over UNIX-domain or TCP sockets. Supervisor also has an event-notification protocol usable by programs in any language and extension points for Python developers. It can be installed with pip or from a downloaded distribution, including on systems without internet access. It is intended for project- or customer-related processes, not as a replacement for init as process ID 1. It runs on supported UNIX-like systems and does not run under Windows.