Each tool is described by one ore more attributes:
Generally costs money. A free limited/demo/trial version may be available.
Works natively on Linux
Works natively on OpenBSD, FreeBSD, Solaris, and/or other UNIX variants
Works natively on Apple Mac OS X
Works natively on Microsoft Windows
Features a command-line interface
Offers a GUI (point and click) interface
Source code available for inspection.
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