Operating Systems

Protocols

Physical Layers

Platforms

Languages

Version Control

Linux

VoIP

Ethernet

Intel x86

C

CVS

VxWorks

SIP

T1/E1

IXP 4xx and 23xx

C++

SVN

ThreadX

MGCP

802.11a/b/g WiFi

network processors

ASM

RCS

Nucleus

SNMP

3G technologies

ARM

Java

PVCS

VRTX

TCP/IP

(EDGE/HSDPA/1xRTT/EVDO)

XScale

XML

Perforce

802.1Q/p VLAN

8051

HTTP/CGI

PPP

C166

Perl

Frame Relay

Tcl/Tk

PRI/ISDN

BASH

HDLC

Python