$ pacman -Qs lib32

local/lib32-bzip2 1.0.6-1
    A high-quality data compression program (32-bit)
local/lib32-expat 2.1.0-1
    An XML Parser library written in C (32 bit)
local/lib32-freetype2 2.5.3-1
    TrueType font rendering library (32-bit)
local/lib32-gcc-libs 4.9.0-5
    Runtime libraries shipped by GCC (32-bit)
local/lib32-glib2 2.40.0-1
    Common C routines used by GTK+ 2.4 and other libs (32-bit)
local/lib32-glibc 2.19-5
    GNU C Library (32-bit)
local/lib32-harfbuzz 0.9.28-1
    OpenType text shaping engine. (32-bit)
local/lib32-icu 53.1-1
    International Components for Unicode library (32 bit)
local/lib32-libdbus 1.8.4-1
    DBus library (32-bit)
local/lib32-libffi 3.1-1
    A portable, high level programming interface to various calling conventions (32-bit)
local/lib32-libpng 1.6.10-1
    A collection of routines used to create PNG format graphics files (32-bit)
local/lib32-pcre 8.35-1
    A library that implements Perl 5-style regular expressions (32-bit)
local/lib32-zlib 1.2.8-1
    Compression library implementing the deflate compression method found in gzip and PKZIP (32-bit)