1)   PCSummarizer 2005 2.6.0.0
PCSummarizer 2005 is an advanced task manager and system & hardware monitoring tool for your computer system. PCSummarizer 2005 Features: - Monitor a variety of hardware; - View detailed information on applications running on your system;
System summary, CPU usage, memory available, hard drive space, OSD,

 2)   SizeExplorer Pro 4.1
Powerful disk space usage analyzer with folder size, charts, statistics, duplicates finder, clickable reports, complete file listing, exports, printing, search, file management, loading and saving of explorations (snapshots) and compare of snapshot.
folder size, treesize, duplicates, compare, tree size, disk space, disk usage, disk analyzer, foldersize, folder sizes,