SAP Add-On Installation Tool (SAINT) 
Use
SAP offers a wide range of add-ons that you can use to enhance your standard SAP System. These add-ons can be Industry Solutions, plug-ins, or customer-specific development projects. Many of these add-ons only contain a small number of objects, however, you must take several import conditions into account.
An operating system-based process for installing or upgrading these add-ons in an SAP System would have been to complicated; instead, we developed the Transaction SAINT. This transaction lets you install and upgrade add-ons directly from the SAP System. You do not need to access the operating system or restart the SAP System.
SAP also offers Preconfigured Systems (PCS), which are also installed with the Transaction SAINT (as of SPAM/SAINT Update Version 11). A PCS reduces the amount of work needed to install and customize and industry-specific solution.
You can also use Transaction SAINT to process any compressed files (*.CAR) that you have downloaded to your computer from SAPNet. SAINT can transfer these files to the application server, decompress them and then install them (as of SPAM/SAINT Update Version 11).

This transaction is updated frequently, which means that it is only available in the language English and German.

Note that you can only use this transaction under SAP GUI for Java and SAP GUI for Windows.
Prerequisites
The Transaction SAINT is available as of Release 4.0B, and is delivered in its own Support Package, the
SPAM/SAINT Update.We enhance and improve the transaction constantly, and recommend that you always import the latest version from SAPNet before you make an installation or upgrade.
Functions
Activities