GKrellM vs Mango Mirror

GKrellM is a free system-monitoring program that stacks multiple readings in one interface and supports themes matching a window manager, GTK or another theme. Its built-in monitors cover CPU, processes, disks, network interfaces, memory, swap, filesystems, uptime and internet connections. When supported by the system’s hardware and software, temperature, fan and voltage monitors can show configurable warnings and alarms. A mailbox monitor checks mbox, maildir, MH, POP3 and IMAP mailboxes, and can launch a mail reader or mail-checking program. GKrellM can also run as a client and collect data from a gkrellmd server on a remote machine. Both the program and server support plugins for specialized monitors. Builds or compilation options are listed for Linux, FreeBSD, Mac OS X, NetBSD, OpenBSD and Windows. GKrellM requires GTK, GDK and GLib; the server requires GLib and can be installed without GTK or X libraries. It is released under the GNU General Public License at no cost.

Mango Mirror turns screens into live displays for calendars, weather, photos, news, tasks, menus, and business dashboards. A drag-and-drop editor arranges widgets; users can make multiple pages and schedule content changes by time. Displays can be managed in a browser on a phone, laptop, or tablet, with changes appearing on screen within seconds. Free includes two screen licenses, custom layouts and pages, clock, news, weather, background images, and quotes. Pro supports calendar sources including Google, Outlook, Apple iCal, Cozi, and ICS, plus task and photo services. Business adds office files, PDFs, video, website embeds, and browser snapshots. Enterprise adds Power BI, linked displays, Microsoft 365 group calendars, Teams shared calendars, and advanced snapshots. Supported screens include Samsung and LG TVs, Android/Google TV, Fire TV, tablets, Echo Show, Windows PCs, browsers, and Raspberry Pi. Pro costs $5.99 a month, Business $19.99 a month, and Enterprise $49 a month; each includes three screens. Business includes priority live chat and a 99.9% uptime SLA.