Embedded real-time software, Ethernet, TCP/IP, UDP, SNMP, Spanning Tree, HTML, Windows 3.1 GUI, LACP, MAC framing (802.3 & 802.11), IGMP Snooping, RIP, OSPF, IPv6, DVMRP, X.25, ACP127, ATM (AAL5, ILMI).
PowerPC, ColdFire, 68xxx, PIC, 80188, 29K, PP250, 8751, Z80.
UML, Booch, Rational Rose, Software through Pictures (Hatley & Pirbhai (extended Yourdon)), Composite Design, MASCOT. Racal Visula & PALASM for the PCB design.
C/C++, Coral 66, Algol, FORTRAN IV, TCL, Assemblers. I have also used MFC, Pascal, Java, C# and JavaScript outside work.
UNIX, Windows, DOS, VAX/VMS, ISIS, George. I have also used Linux outside work. I have designed for VxWorks but not used it hands-on.
Rational Clearcase and Clearquest, SCCS, and various paper-based systems. I have also used CVS and Subversion outside work.