My team has been looking at cross-platform encryption products and OpenPGP Studio tends to top the list. However, it gives our OS X audience challenges as it is built on Java and doesn't seem to work for us on El Capitan due to the reliance on the Java 6 runtime (we don't want to run a potentially insecure legacy runtime). Do you have any plans to update the OS X version of the software to shed the legacy run time requirements any time soon?
p.s. We are customers of MFT and to all accounts internally are very happy with that as well.
Information Security and Risk Manager
The Nature Conservancy