Comment by gsnedders
12 years ago
Web browsers all by default use other crypto libraries. (Chromium can be linked to OpenSSL, some distros may ship this — I haven't looked.)
Email clients may be more vulnerable — Thunderbird doesn't, Mail.app doesn't, but I'm unaware what most use.
Sidenote, OS X machines, by default, are not affected by this bug.
$ openssl version -a OpenSSL 0.9.8y 5 Feb 2013