CPlot

Linux (formerly Windows, formerly Mac) function plotter. Screenshots and Windows binaries are on the homepage.

Supports various projection modes and function types, natural expression syntax (sin xy instead of Sin[x*y] f.e.), blending between functions (identity and your target function for example), realtime parameter variation (where parameters are things like a mass or spring constant, order of a pole, etc), ...

Linux build:

On Arch: sudo pacman -S --needed git python ninja boost zlib sdl2 libgl glu glew pango cairo.

On Debian: sudo apt install git python3 ninja-build libboost-dev libz-dev libsdl2-dev libgl-dev libglu-dev libglew-dev libpango-1.0-dev libcairo2-dev.

Then build with:

git clone https://github.com/hilgenberg/cplot
cd cplot
git submodule update --init --recursive
./build
./cplot test.cplot

Press Escape to show/hide the GUI.
Documentation is available from the menu under View > Show Help.
Some demo files are in the "Plot Examples" directory.

Windows build:

(Somewhat defunct because I have no Windows box at the moment - the 1.10 tag should still work.)
Copy boost headers to Windows/boost/, open CPlot.sln in Visual Studio 2017, and it should just build.