11 Feb
2017
11 Feb
'17
11:34 p.m.
You can also try the mainline version of Pale Moon if you want 64-bit. http://linux.palemoon.org/ It uses gtk2, but I don't know if it's compatible with other old libraries that CentOS 6 uses. My build goes out of its way to be compatible with older libraries.
I did once build pm on CentOS6 as poc, but after switched to the distributed binaries. 26.x is the end of line for CentOS6, and I haven't tried building 27.x. Maybe I'll try that, addressing the library situation with custom or static versions.