Free system scan software for windows

Smart Content Aggregation and Navigation is a personal Information Retrieval framework. SCAN (Smart Content Aggregation and Navigation) is a personal Information Retrieval framework.
SCAN intends to find a solution for major problems regarding findability in information overload age and content organization.
SCAN aggregates content from different sources into a single documents collection. This repository may keep records on thousands of documents independently of their original locations and formats. Every document record contains a number of metadata properties (such as title, description, author, creation date, etc) which can be either set automatically or edited manually.
System requirements:
- Java Runtime Environment

Shows Window class and name under mouse cursor. Komponent Scan is a very small, simple and easy-to-use installation that shows Window class and name under cursor.
Komponent Scan is very small, only 20 kb in size, and it does not require any installation - just download it and unzip it.

VTE Virus Scanner 2.0.0.2 is created as a tool for scanning virus. It as a rather significant update from the previous version. This version now includes several new features such as MD5 scanning, and system optimizing utilities. The combined databases now have a total of over 1.2 million entries.

Enhancements:

• Database updates, MD5 scanning, System Optimization.

Registry Cleaner - Scan Tool 1.1 is a powerful tool that scans your PC for registry problems and then instantly clean your system with a few clicks of the mouse. Make your PC run like new again and accelerate its performance just by cleaning up your system registry.

This small utility will scan your system over 100 known Trojans with there default port settings. User can modify the port settings, make notes of a specific Trojan, do a total system scan with just one button! ODBC & Visual Basic 6 drivers are required to make it run (ships with Office97/2000).Requires the VB 6.0 Runtimes.