What I mean by the title is, whether there’s a free framework/tool that allows me to write .scala files and have them reloaded & compiled automatically by the (web) server without the need to compile, package and deploy.
Probably javarebel can be used here, but it is not free.
JRebel, which is the new name for JavaRebel, has a free license for Scala use.
Other alternatives include using Maven’s scala:cc target, which keeps compiling on the background, triggered by changes, and, in particular, the Play framework is almost perfect in this regard.