Packages with the urandom use flag

dev-libs / apr : Apache Portable Runtime Library

Use /dev/urandom instead of /dev/random

dev-libs / cyrus-sasl : The Cyrus SASL (Simple Authentication and Security Layer)

Use /dev/urandom instead of /dev/random

dev-libs / libsodium : A portable fork of NaCl, a higher-level cryptographic library

Use /dev/urandom instead of /dev/random

net-dns / pdnsd : Proxy DNS server with permanent caching

Linux-only: use /dev/urandom (pseudo-random number generation) instead of the default use of random() PRNG.

sys-fs / cryptsetup : Tool to setup encrypted devices with dm-crypt

Use /dev/urandom instead of /dev/random