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DBS is a useful tool chest for evaluating TCP implementations, specifically flow control, retransmission control and congestion avoidance. -It can treat multiple TCP connections spanning multiple hosts simultaneously, and -It has the capability of measuring the changes of application level throughput at every data transmission.

dkftpbench is an FTP benchmark program inspired by SPECweb99. The result of the benchmark is a number-of-simultaneous-users rating; after running the benchmark properly, you have a good idea how many simultaneous dialup clients a server can support. The target bandwidth per client is set at 28.8 kilobits/second to model dialup users; this is important for servers on the real Internet, which often serve thousands of clients on only 10 MBits/sec of bandwidth.

This integer benchmark solves positions in the game of connect-4, as played on a vertical 7x6 board. This takes about 10 minutes on contemporary PCs.

forkbomb is tool for stress testing. It can create many processes using fork(), bring up some zombies, allocate memory using realloc() and accesses this memory. It has different switches for fine-tuning operation. While classic fork() bomb is good only for fun and QA release testing, running multiple memory-eaters can be useful for determining maximum memory which can be given to servers (bind or squid) without taking machine down. You can test different operation systems with this tool and see how they are handling the load.

Flowgrind is an advanced TCP traffic generator for testing and benchmarking Linux, FreeBSD, and Mac OS X TCP/IP stacks. In contrast to similar tools like iperf or netperf it features a distributed architecture, where throughput and other metrics are measured between arbitrary flowgrind server processes.

GtkPerf is an application designed to test GTK+ performance. The point is to create common testing platform to run predefined GTK+ widgets (opening comboboxes, toggling buttons, scrolling text yms.) and this way define the speed of device/platform.

Himeno Benchmark is made by HIMENO, Ryutaro, for evaluation of performance of the calculation of incompressible flow analysis. This program solves Poisson equation by Jacobi's iterative method which have many loops.

The idea of IMB is to provide a concise set of elementary MPI benchmark kernels. With one executable, all of the supported benchmarks, or a subset specified by the command line, can be run. The rules, such as time measurement (including a repetitive call of the kernels for better clock synchronization), message lengths, selection of communicators to run a particular benchmark (inside the group of all started processes) are program parameters.

Iozone: 'IO Zone' Benchmark Program (older 2.1 version) Iozone tests the speed of sequential I/O to actual files. Therefore, this measurement factors in the efficiency of your machine's file system, operating system, C compiler, and C runtime library. It produces a measurement which is the number of bytes per second that your system can read or write to a file. This is the 2.1 version of iozone. The new 3.x+ versions of iozone have completely changed their testing methods, thus their output is useless in comparing with older statistics.

LibMicro is a portable set of microbenchmarks that many Solaris engineers used during Solaris 10 development to measure the performance of various system and library calls. LibMicro was developed by Bart Smaalders and Phil Harman as part of their If another OS is faster it's a Solaris bug performance campaign.