JSF vs ASP.net

DuncanE asks: "We are looking at migrating an old legacy database application to a newer web based framework for the front end. For me the two obvious choices are ASP.net vs Java Server Faces. CodeGuru has side by side look at both, but does anyone have any real world comparisons? ASP.net appears to be MS only, which is a concern, depending on how mature mod_mono has become." Which framework would you prefer to use? Under what situations and conditions would you recommend the use of the other?

Comments

What are you and your programmers familiar with?

[BadAnalogyGuy]

These kinds of decisions ought to be based on what you and your colleagues are most comfortable with. Java? C#? Perl/Python? You certainly wouldn't try to run a marathon in brand new shoes!

Re:neither?

[LarsWestergren]

Both have a reputation for being slow, insecure,

Maybe on Slashdot... Java has an excellent track record for security. Compare with the PHP worm that swept the net, or PHP based framworks like NukePHP that are hacked so regularly that sites are unusable. .Net I haven't kept up with, so I don't know how they do security in real life.

Server side java is REALLY fast. On artifical benchmarks, java can be as fast as C++, and these people wrote a high performance Linux cluster monitoring tool in Java.

If you need more proof, Java is now the preferred language for Boeing when doing mission critical and real time software. NASA used it during the Mars mission...

and proprietary.

You can join the Java Community Process for free as an individual and vote for how future versions of Java will look like, Sun has handed over control over just about everything but the Java trademark to this JCP. There are also plenty of open source implementations of compilers and JVMs. Sun keeps donating stuff to the open source community. DTrace, Solaris, 1600 patents, cryptography tech....