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Professional, open source diagramming. Online or desktop, no registration.
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Valgrind is an instrumentation framework for building dynamic analysis tools. There are Valgrind tools that can automatically detect many memory management and threading bugs, and profile your programs in detail. You can also use Valgrind to build new tools.
Its main aim is to unify service configuration and behavior across Linux distributions; systemd’s primary component is a “system and service manager”—an init system used to bootstrap user space and manage user processes.
NASA Software Catalog offers hundreds of new software programs you can download for free to use in a wide variety of technical applications.
Quick-benchmark is a micro benchmarking tool intended to quickly and simply compare the performance of two or more code snippets.
online compiler and debugger for c/c++
Scapy is a Python program that enables the user to send, sniff and dissect and forge network packets. This capability allows construction of tools that can probe, scan or attack networks.