IDAES — The Complete Guide: Modelling and Optimising Processes and Energy Systems
IDAES is an open Python platform from U.S. DOE labs for building flowsheets from unit models and property packages, for process simulation and optimisation.
Guides and Articles
Clapeyron.jl — The Complete Guide: Equations of State and Phase Equilibria in Julia
Clapeyron.jl is an open Julia package for thermodynamic models: cubic equations of state, the SAFT family, activity models and COSMO-SAC for phase equilibria.
fluids — The Complete Guide: Free Flow and Pressure-Drop Calculations in Python
fluids is an open Python library with hundreds of fluid functions: pressure drop in pipes and fittings, pumps, compressible flow, valves and flow meters.
ALOHA — The Complete Guide: Modelling Toxic Clouds, Fires and Explosions From Hazardous Chemical Releases
ALOHA from EPA and NOAA calculates threat zones around a hazardous chemical release: toxic cloud, flammable gas, explosion and fire, shown on a map.
WaveDrom — The Complete Guide: Free Timing Diagrams and Register Maps From Text
WaveDrom draws digital timing diagrams and register maps from a short text description, in the browser or as an app. A free documentation tool for FPGA work.
PulseView — The Complete Guide: A Free GUI for Logic Analysers and Oscilloscopes With Protocol Decoding
PulseView is the sigrok GUI for logic analysers and oscilloscopes, cheap ones included, with I2C, SPI, UART and CAN decoders, for debugging embedded systems.
InteractiveHtmlBom — The Complete Guide: An Interactive Bill of Materials for Board Assembly
InteractiveHtmlBom creates one HTML file with a parts list and a board view that shows where each part sits — a great aid for hand assembly. Free for KiCad.
Gerbv — The Complete Guide: Free Checking of Gerber and Drill Files Before Fabrication
Gerbv displays PCB fabrication files — RS-274X Gerber, Excellon drill and pick-and-place — to confirm that what goes to the fab matches the design.
OpenROAD — The Complete Guide: Automated Physical Implementation of Digital Chips From RTL to GDSII
OpenROAD is an open toolchain for physical implementation of digital chips: floorplanning, placement, clock tree, routing and timing, with kits like SKY130.
Xschem — The Complete Guide: Free Hierarchical Schematics for Analog and Mixed-Signal Circuits
Xschem is an open tool for hierarchical schematics in analog and mixed-signal chip design, with SPICE, Verilog and VHDL netlists and in-schematic plots.
Magic VLSI — The Complete Guide: A Free Chip Layout Editor With Real-Time DRC
Magic VLSI is a veteran open-source chip layout editor: DRC while you draw, netlist and parasitic extraction, and GDS and LEF/DEF support. Who it suits and why.
KLayout — The Complete Guide: Free Viewing and Editing of GDS and OASIS Chip Layouts
KLayout opens and edits chip mask layouts in GDS2 and OASIS, fast even on huge files, with DRC, LVS and Python or Ruby scripting. Open source and free to use.