Easy Funktion is 2D function plotter software with an equation solver. It has an office-like GUI frontend and features a built-in pocket calculator, calculating with complex numbers (with special extensions for electronics, e.g. capacitor/inductor impedance), a function to export to spreadsheet software, and an advanced formula editor with automatic formatting.
ElectricFormula is a program that can help with electronic based projects or problems. It can calculate electric power, resistance, current, or voltage. If given two of these variables as input, it can determine the other two. For example, if you want to calculate the resistance, you will have to supply the value for the electric power and current or you can supply the value of the power and voltage.
Electronic Design Automation - Index is a system that can be used in the electronic world to keep track of your: Schematic, Printed Circuit Board, Front Plate, and Programmable Logic Unit numbers. This is very useful when you have drawn many electronic schematics and PCBs in an EDA program such as Eagle, gEDA, Protel, or Orcad. It's also useful if you've created a front plate layout in an image editor such as GIMP, Corel Draw, or Photoshop.
Electronic Engineering Tool is a Web-based tool that includes an electronic formula calculator and converter functions. It very useful when working with electronics, both for engineers and amateurs. For example, it includes converters for dBm-to-Watt and Fahrenheit-to-Celsius, and it can calculate Ohm's law, filters, thermal resistant C/W, SWR, coil inductance, capacitor capacity, and more.
FSMDesigner is a Finite State Machine (FSM) design tool with integrated Hardware Description Language (HDL) generation. It uses the Simple-Moore FSM model, guaranteeing efficient fast complex control circuits. It features graphical design of FSMs, support for automatic default transitions, validation of FSMs, a well-defined XML file format, generation of RTL HDL output for both Verilog and VHDL, full scriptability in Python, a modern GUI with undo and redo, simulation mode support, and table based data manipulation.
FerFT is a multi-purpose spectral analyzer based on the successive Fourier transformation method. It features an input signal monitor which can sample input signals through a microphone with various sample rates and show them graphically on the panel. It also lets you calculate power spectra successively along with sampled input signals and show them graphically on the panel. Finally, it provides a filter to modify spectra and regenerate signals from them.