De facto, KM and FF are simply different shells, wrappers for Gecko engine.
All FF GUI is XUL-based (->cross-platform but heavy) and KM uses Windows system libs (mono-platform but light).
Moreover, KM has its own macrolanguage, making possible to create some added functionality not eating much of system resources.
FF needs to integrate new XUL-extension where KM can sometime use text based macro-file.
Latest Release KM75.1 Latest dev KM76RC
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and join me there!
Old good stuff: KM-1.6db+NS
© dugbugoffice // KM-16-S2014
© Fred // KM-1.6beta2.6
© JamesD // KM Twin+ © rodocop
// KM 220.127.116.11
RECOMMENDED! K-Meleon 76 Pro
==» Download portable: 7zip
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K-Meleon 75.1 Pro
|| Portable Flash plugin (x86/x64 DLLs)