emsdk version

The *recommended* precompiled SDK download is 1.39.6 (967836071d96d9b7894e492382f5fcb96423fc07).

To install/activate it, use one of:
         latest                  [default (llvm) backend]
         latest-fastcomp         [legacy (fastcomp) backend]

Those are equivalent to installing/activating the following:
         1.39.6
         1.39.6-fastcomp

All recent (non-legacy) installable versions are:
         1.39.6
         1.39.5
         1.39.4
         1.39.3
         1.39.2
         1.39.1
         1.39.0
         1.38.48
         1.38.47
         1.38.46
         1.38.45
         1.38.44
         1.38.43
         1.38.42
         1.38.41
         1.38.40
         1.38.39
         1.38.38
         1.38.37
         1.38.36
         1.38.35
         1.38.34
         1.38.33

The additional following precompiled SDKs are also available for download:
Manifest error: No tool by name 'clang-e1.37.1-64bit' found! This may indicate an internal SDK error!
Manifest error: No tool by name 'clang-e1.37.1-64bit' found! This may indicate an internal SDK error!
         sdk-1.37.1-64bit         
         sdk-releases-upstream-c89919d252f7cea00d944bdf3bd630cd3c7e7388-64bit	INSTALLED
         sdk-releases-upstream-1290d9deb93d67c4649999a8f2c8d9167d38dc04-64bit	INSTALLED
    *    sdk-releases-fastcomp-c89919d252f7cea00d944bdf3bd630cd3c7e7388-64bit	INSTALLED
    *    sdk-releases-fastcomp-1290d9deb93d67c4649999a8f2c8d9167d38dc04-64bit	INSTALLED
         sdk-fastcomp-1.38.30-64bit
         sdk-fastcomp-1.38.31-64bit

The following SDKs can be compiled from source:
         sdk-upstream-master-64bit
         sdk-fastcomp-master-32bit
         sdk-fastcomp-master-64bit
         sdk-fastcomp-tag-1.38.30-64bit
         sdk-fastcomp-tag-1.38.31-64bit

The following precompiled tool packages are available for download:
           releases-upstream-c89919d252f7cea00d944bdf3bd630cd3c7e7388-64bit	INSTALLED
           releases-upstream-1290d9deb93d67c4649999a8f2c8d9167d38dc04-64bit	INSTALLED
     *     releases-fastcomp-c89919d252f7cea00d944bdf3bd630cd3c7e7388-64bit	INSTALLED
     *     releases-fastcomp-1290d9deb93d67c4649999a8f2c8d9167d38dc04-64bit	INSTALLED
           fastcomp-clang-e1.38.30-64bit
           fastcomp-clang-e1.38.31-64bit
           node-4.1.1-64bit         
           node-8.9.1-64bit         
     *     node-12.9.1-64bit        	INSTALLED
     *     python-2.7.13.1-64bit    	INSTALLED
           python-3.5.4-64bit       
     *     java-8.152-64bit         	INSTALLED
           emscripten-1.38.30       
           emscripten-1.38.31       
           gnu-2.5.4                
           mingw-7.1.0-64bit        

The following tools can be compiled from source:
           llvm-git-master-32bit    
           llvm-git-master-64bit    
           clang-tag-e1.38.30-32bit 
           clang-tag-e1.38.31-32bit 
           fastcomp-clang-tag-e1.38.30-64bit
           fastcomp-clang-tag-e1.38.31-64bit
           fastcomp-clang-master-32bit
           fastcomp-clang-master-64bit
           emscripten-tag-1.38.30-32bit
           emscripten-tag-1.38.31-32bit
           emscripten-tag-1.38.30-64bit
           emscripten-tag-1.38.31-64bit
           binaryen-tag-1.38.30-32bit
           binaryen-tag-1.38.31-32bit
           binaryen-tag-1.38.30-64bit
           binaryen-tag-1.38.31-64bit
           emscripten-master-32bit  
           emscripten-master-64bit  
           binaryen-master-32bit    
           binaryen-master-64bit    

Items marked with * are activated for the current user.

To access the historical archived versions, type 'emsdk list --old'

Run "git pull" followed by "./emsdk update-tags" to pull in the latest list.