HEATKEYS

TimingTool diagram editor is free to use online. TimingTool application generates VHDL or Verilog test benches from timing diagrams.

SynaptiCAD: EDA supplier for timing diagram editors, simulators, and VHDL and Verilog debug tools.

SourceForge.net. Fast, secure and free downloads from the largest Open Source applications and software directory

TimeGen is a timing diagram software editor that allows engineers to easily create design specifications and timing diagrams.

YouTube is a place to discover, watch, upload and share videos.

UML design and business analysis tool for modeling, documenting, reverse engineering, building and maintaining object-oriented software systems, fast and intuitive. Great features, great price.

Online diagram and flowchart software. Create diagrams and drawings such as flowcharts, mind maps, network diagrams, UML diagrams, wireframes, user interface designs and other drawings online with LucidChart.

International Electronic Discussion Forum: EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals

Software development tools support UML, SysML, BPMN, Business Rule, ERD and mind mapping. All Visual Paradigm tool can run on Windows, Linux and Mac OSX.