"I must say that I'm highly impressed by the overall
quality of your (the Horde team) work! Horde is a model in terms of modular
design, reusable components, features and configurability. Congratulations
for this very high piece of quality software!
And the quality of support on the mailing lists is on par with the software
quality. I deal with commercial products by (unfortunate) necessity that
don't have the tenth of your reactivity for support, let alone the coding