PRTG - Paessler Router Traffic Grapher 

An easy to use Windows solution for network/bandwidth usage monitoring. The software supports SNMP, packet sniffing and netflow to generate live readings and trend data to optimize the efficiency of routers, servers and other network components.
snmp packet sniffer packet sniffing netflow cisco router firewall mrtg bandwidth ip volume prtg traffic

NetExpense 

NetExpense tracks Internet/Computer usage and generates user wise usage reports. It can also calculate telephone cost incurred for internet connection. if required, It can also alert you when you are online in intervals of specified alert time.
internet time monitor computer online time internet time netexpense

Personal Timeclock 

Personal Timeclock: Tracks and reports your computer usage by project and category. It can help you with client billing, time management, and can provide the information needed at tax time to justify a deduction for business use of your computer.
timeclock punchclock clock project computer time client billing tracking recording reporting taxes

SizeExplorer Pro 

Powerful disk space usage analyzer with folder size, charts, statistics, clickable reports, complete file listing, exports, printing, file management, loading and saving of explorations (snapshots).
disk space analyzer manager folder size report print export owner file explorer windows

SizeExplorer Lite 

Powerful disk space usage analyzer with folder size, charts, statistics, clickable reports, complete file listing, exports, printing.
disk space analyzer manager folder size report print export owner file explorer windows

SC-DiskInfo Standard Edition 

SC-DiskInfo is a disk space usage analyzer. This program will track down those folders and files that are using most disk space so you can remove unwanted data and clean up your drive effectively. SC-DiskInfo is very fast and easy to use.
disk size analyse chart optimization clean up delete remove file folder management