Programming 
C/C++, Assembly, Verilog, VHDL, System C, Perl, Bash
Programming Programming Tools
GNU GCC tools-chain for ARM, Synopsys ARC, Power PC, x86, Lauterbach, ARM Real-View, Cadence Tesilica Xtensa, Code Composer studio, Code Warrior, Eclipse, GNU Make, CMake
HDL Tools
Mentor Graphics ModelSim/Questa, Cadence NcSim, Synopsys VCS, Icarus Verilog, Verilator
Prototyping platforms
Cadence Palladium, Synopsys ZeBu, Mentor Graphics Veloce
Standards
IEEE802.3 (Ethernet), IEEE802.15.4g/e (LR-WPAN), 3GPP, XHCI-USB3, AHCI-SATA, ATA-ATAPI, SD MEMORY/IO Cards, Autosar
Version Control Software
ClearCase, GIT, DesignSync, SVN, CVS