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th
I always have a screen session open with htop in one terminal. I take it for granted so much the lack of htop bothers me if I need to do any form of process management.
atsaloli
htop and atop are my top two top tools

http://www.atoptool.nl/downloadatop.php

atop uses color to show when a subsystem goes over warn/critical threshold. it can be run in present time, or can be used to go back in time and "play back the tape"

Jim_Neath
I generally have one terminal open with htop as well. It's awesome for finding out which of your processes are battering your system
d_c
Htop is really useful, you can hide or show userland threads, switch to a tree view, etc. I use it daily.
fuxx0r
Iam using it so much. I like the graphs which gives me on a first look a faster overview about cpu/ram.

If you got a SMP system every core got his one graph, which wasnt available in top.

At least, its the best alternative to top, in my opinion!

stanley
What are some other must-have applications you guys find useful?
atsaloli
Here are the tools I find indispensible as a sys admin:

- screen for accessing servers

- lshw for seeing Linux server hardware config

- cfengine for automating my system administration

ComputerGuru
It's the first thing I install on any server these days. I always have an SSH terminal open to htop to monitor my server at all times.
morphir
htop is not a generic *nix tool. It depends on the Linux kernel (hard dependencies).
rimantas
Macports version runs just fine on Snow leopard
morphir
you are right. It turns out OSX support is here now. Do I have to be binary compatible to Linux to use it on FreeBSD?

It's a great tool nonetheless.

Lammy
Yes you do, and linprocfs must be mounted.
bch
I just compiled it on my NetBSD laptop from pkgsrc (http://www.netbsd.org/docs/software/packages.html), (http://pkgsrc.se/sysutils/htop), and it works no problems... no Linux emulation/support required.

Pkgsrc is a cross-platform package management system, originating w/ NetBSD project... I've used it on NetBSD and MacOS successfully. Should work with pretty much any *nix-like system.

[edit: though it doesn't appear "fully-integrated". Example: pressing 's' to run strace(1) doesn't work in NetBSD, which uses ktrace(1). Maybe configurable; I haven't got that far...

bcl
atop is another useful alternative to top, shows i/o and network activity in addition to all the usual details.
wendroid
Really, the best of breed ?

TTY & ncurses, what a sad state of affairs.

TTY is keeping you down : http://kerneltrap.org/Linux/Removing_The_Big_Kernel_Lock2

Rob Pike was right in 1991 : "Not only is UNIX dead, it's starting to smell really bad."

Plan9 is now older than Unix was when Plan9 was started. Operating System research is dead.

wanderr
Am I the only person here who hates htop? I just can't get used to it. The lack of labels and relying on color coding to convey information just obfuscates things for me. I still use top for that reason.