The OpenSourceMovement? is a large movement of programmers and other computer users to give easy access to ComputerSoftware.
There is widespread agreement, but some tension, between the OpenSourceMovement? and the FreeSoftwareMovement?.
Among the relevant topics:
DonaldEKnuth?, RichardStallman?, LinusTorvalds?, EricRaymond?, PaulVixie?
The GNUProjecT?, FreeSoftwareFoundation?, DebianLinux? distribution, FreeBSD?
OpenSourceSoftware?: EmacS?, TeX?, ViM?, ApachE?, XFrEE?, GimP?, PhP?...
''Please delete this note after confirmation/disconfirmation: I'm not sure that TeX? is OpenSource.''