Glances vs iotop

Glances is a free, open-source, cross-platform tool for monitoring real-time system statistics and running processes. Its listed coverage includes CPU, memory, load, processes, network, disk I/O, sensors, filesystems, containers, alerts, and uptime. Client/server mode enables remote monitoring through a terminal, web interface, or API, while its built-in web UI lets users view a system from a browser-equipped device. Statistics can be exported to CSV or JSON files, databases such as InfluxDB and Prometheus, brokers such as RabbitMQ and Kafka, or a REST endpoint. The project documents Docker and Podman support and describes Docker and LXC container monitoring in its README. Installation options include pip, pipx, Homebrew, Linux and FreeBSD packages, and Docker images. Glances 4 requires Python 3.10 or higher. Its default installation does not include web interface dependencies; separate extras cover features such as web, GPU, containers, exports, and MCP. Version 4.5.1 and higher can provide an MCP server for AI assistants. The project uses the LGPL version 3 license.

iotop is a free Linux program that identifies processes generating high input/output activity and lists them by I/O usage. The display can show accumulated I/O or bandwidth, with optional read, write, swap-in and I/O-percentage columns. Monitoring can target selected process IDs or users, or show processes and threads across the machine. Interactive and batch modes support iteration counts, configurable delays and timestamps in batch output. Command-line filters narrow processes by TID or command using a regular expression. Installation guidance covers Debian-derived distributions, Fedora, CentOS/RHEL, Void, Arch and Alpine Linux; source builds use make after development dependencies are installed. The project is GPL-2.0+ licensed, but installation and use require root access. Version 1.31 is listed as the latest release. Its tag has a verified committer signature, although the signing key has expired.