Usage Monitor
Usage Monitor lets you set watch limits on processes to know when your process is using too much. Watch limits can be placed on Memory Usage, GDI Objects, and USER Objects. This is a great tool for any developer.
http://www.veign.com/downloads/umon.zip - 2Mb - Download - Screenshot

RAM Booster Expert
RAM Booster Expert is a RAM memory optimizer. It free up RAM memory and make your computer much faster and stable. It allows you to instantly free up memory when your system slows down. Also it will defragment physical memory and will recover used memory from Windows and other applications. ... It has a easy to use interface that will display many information about free and used physical memory, free and used page file, CPU usage and clipboard content. ... You can use the schedule feature to optimize the memory when you are away from the computer.
http://www.bodrag.com/download/rambsetup.exe - 1Mb - Download - Screenshot

Free Up Ram
Free Up Ram is a simple, yet robust memory optimizer. Free Up Ram was designed to allow you to quickly free up physical memory taken up or used by applications and processes no longer in use by your computer. By freeing up available memory, Free Up Ram will enable your computer to re-allocate...
http://www.popdrops.com/freeupramsetup.exe - 301Kb - Download - Screenshot

SysGraph
Sysgraph is a program that monitors your network speed, RAM and CPU usage. It can optimize memory usage to make other programs run faster. It runs without installation so it keeps your system clean from unnecessary registry entries.
http://w3.enternet.hu/andax2/sgraph11.zip - 250Kb - Download - Screenshot

BySoft FreeRAM
BySoft FreeRAM 4. 0 is freeware memory manager program that defragments and reclaims memory from the operating system and leaking applications and dlls. This decreases load time and boosts application performance. Features: - Easy to use - Optimize memory manually or automatically - Flushes... 80%) - See real time chart of available memory and CPU usage - Automatically or manually tunes system file cache - Skin support - Uses system tray - Freeware!
http://www.bysoft.com/dl.php?file=FreeRAM32.exe - 494Kb - Download - Screenshot

System Eye
System Eye is a manager of system resources. The program shows usage of the main parameters of your computer - the processor, operative and virtual memory, and also a swap file. Therefore you can always watch its productivity, control too exacting applications, quickly find not responding... If the gauge of memory usage is full, it is necessary to close unused applications. ... Also, System Eye has the unique mechanism, which itself will keep up resources usage and in case of an overload will restore high performance.
http://www.globalclipboard.com/systemeye/syseye.exe - 440Kb - Download - Screenshot

MemoryBoost Pro
Is your computer running slow? Do your programs crash after the computer has been running awhile? Does it seem that your disk drive is running all the time while you work? Then you need a boost, a Memory Boost! MemoryBoost Pro recovers memory leaks, and prevents Windows crashes. ... It also provides in-depth statistics and a history of memory-usage, so you can see how much MemoryBoost has helped your computer. ... Windows lets closed programs stay in memory; that's why you have to reboot your computer to keep the performance up.
http://www.tenebril.com/pub/bin/mbsetup.exe - 2Mb - Download - Screenshot

NfoNak
See how your computer is performing in a variety of different graphical formats. It can also be used as a screen saver. You can monitor such details as memory, disk space, disk usage, CPU usage, internet data rates etc. The graphical formats available are highly customizable and you can mix and...
http://www.nakware.com/nfonak/files/nfonak.zip - 577Kb - Download - Screenshot

TaskInfo
TaskInfo for Win9x/ME/NT/2k/XP is a combination of Task Manager and System Information. Show most of the processes that are often invisible such as keyloggers and so on. Provides real time info on all processes and threads including System threads. Shows TCP/IP Connections. ... It also shows System wide info: CPU, Memory, Cache usage, Data rates for Disk, Network, DialUp IO, VPN IO, IP Address, and more. ... For each process, it shows CPU usage, scheduling, path, open files, memory, DLLs, command line, environment variables, and more.
http://www.iarsn.com/taskinfo/tskinf62.exe - 1Mb - Download - Screenshot

ASP XML Parser Component
A super-fast, low-memory usage, XML parser specifically designed to be used server-side in ASP scripts. This DOM based parser is many times faster than MSXML, and consumes far less memory. Great for handling large XML data files. Also includes international character codeset conversion capability.
http://www.chilkatsoft.com/AspXml.exe - 226Kb - Download