https://github.com/cosmomill/ToadPortable

Install Toad for Oracle Portable

Download and run ToadPortable_0.0.1_Development_test_1.paf.exe

Getting Toad for Oracle

Download Toad for Oracle Freeware v12.6 (32-bit)

To extract files from Dell_Toad_for_Oracle_12.6_Freeware.msi file at the command line, type:

msiexec /a Dell_Toad_for_Oracle_12.6_Freeware.msi /qb TARGETDIR="%temp%\toad"
xcopy "%temp%\toad\program files\Dell\Toad for Oracle 12.6 Freeware" "drive\PortableApps\ToadPortable\App\Toad" /S
rmdir "%temp%\toad" /S

Getting Oracle Instant Client Package - Basic

Download Oracle Instant Client Package - Basic (32-bit)

Extract files from instantclient-basic-nt-12.1.0.1.0.zip file to "drive\PortableApps\ToadPortable\App\instantclient_12_1"

Note

If you use Toad for Oracle Commercial Edition you have to edit ToadPortable.ini. Please have a look at the comments in the file for details.