Right after a vanilla installation of any Linux distro, you always want your favorite/must have software.
I like to hear what others like use and have, this way maybe we can get new must have programs or ideas.
My list is here, it may have some that come with Antergos and some i forgot.
git, subversion, bzr
gcc-multilib (sometimes humblebundle drm-free games needs me to install some lib32-libs)
gdb (i like to give bug-reports sometimes)
linux-headers (because installing network adapter needs them)
8192cu-dkms (these work so much better for me than the kernel ones)
gsmartmontools (good to monitor your hdd life’s)
testdisk (for recover and other fun
meld (i use it for translating)
mlocate (to find files)
grub-imageboot + clonezilla.iso (to make a backup of the install)
unetbootin (to make bootable usb-sticks)
Some others i usually also install gimp, bless, libreoffice, scummvm, wine, klavaro or ktouch
These i remove