Ability to detect destination directory from the registry, and let the user override (or not let them).Ability to display a license agreement, text or RTF.Approximately 20-40k overhead over compressed data size (depending on features enabled, compression algorithm, and so on - the default options are ~34k).The installer can compress everything together, or individually. Compression choices of zlib or bzip2 based compression.Optional installer self-verification using a CRC32.Uninstall support (installer can automagically generate an uninstaller).Generates self contained, win32 executable installer.SuperPiMP™ technology (so advanced, so amazing, we won't even tell you what it is).NSIS 2.0+ exist and are much more advanced and efficient. Note: this is the NSIS page for NSIS < 2.0. Nullsoft 'SuperPiMP' Install System NSIS Nullsoft (SuperPiMP|Scriptable) Install System
