$ apt-cache search --names-only xsnow
xsnow - Brings Christmas to your desktop

> cd /usr/ports/ && make search key="xsnow"
Port:	xsnow-1.42_1
Path:	/usr/ports/x11/xsnow
Info:	Create a snowy and Santa-y desktop
Maint:	ports@FreeBSD.org
B-deps:	gccmakedep-1.0.2 imake-1.0.2_4,1 kbproto-1.0.3 libICE-1.0.4_1,1 libSM-1.1.0_1,1 libX11-1.2.1_1,1 libXau-1.0.4 libXdmcp-1.0.2_1 libXext-1.0.5,1 libXpm-3.5.7 libXt-1.0.5_1 libpthread-stubs-0.3_3 libxcb-1.5 makedepend-1.0.1,1 perl-threaded-5.10.1 pkg-config-0.23_1 xextproto-7.0.5 xorg-cf-files-1.0.2_3 xproto-7.0.15
R-deps:	kbproto-1.0.3 libICE-1.0.4_1,1 libSM-1.1.0_1,1 libX11-1.2.1_1,1 libXau-1.0.4 libXdmcp-1.0.2_1 libXext-1.0.5,1 libXpm-3.5.7 libXt-1.0.5_1 libpthread-stubs-0.3_3 libxcb-1.5 pkg-config-0.23_1 xextproto-7.0.5 xproto-7.0.15
WWW:	http://www.euronet.nl/~rja/Xsnow/

% cd /usr/ports/x11/xsnow/ && make checksum
=> xsnow-1.42.tar.gz doesn't seem to exist in /usr/ports/distfiles/.
=> Attempting to fetch from http://www.euronet.nl/~rja/Xsnow/.
fetch: http://www.euronet.nl/~rja/Xsnow/xsnow-1.42.tar.gz: Not Found
=> Attempting to fetch from ftp://ftp.FreeBSD.org/pub/FreeBSD/ports/distfiles/.
xsnow-1.42.tar.gz                             100% of   55 kB  108 kBps
=> MD5 Checksum OK for xsnow-1.42.tar.gz.
=> SHA256 Checksum OK for xsnow-1.42.tar.gz.
%

user@ubuntu:~$ apt-cache search xsnow
xsnow - Приносит Рождество на ваш рабочий стол

$ lsb_release -i
Distributor ID:	Fedora

$ repoquery -i xsnow

Name        : xsnow
Version     : 1.42
Release     : 16.fc12
Architecture: x86_64
Size        : 107431
Packager    : <http://nonfree.rpmfusion.org/>
Group       : Amusements/Graphics
URL         : http://dropmix.xs4all.nl/rick/Xsnow/
Repository  : rpmfusion-nonfree-updates
Summary     : An X Window System based dose of Christmas cheer
Description :
The Xsnow toy provides a continual gentle snowfall, trees, and Santa
Claus flying his sleigh around the screen.  Xsnow is only for the X
Window System, though; consoles just get coal.