Netlist Viewer is a tool capable of loading SPICE netlists and convert them in a schematic (i.e. graphical) format. The graphical representations helps to understand the electrical/electronic circuit represented by the SPICE netlist, and save some tedious work.
A circuit diagram can be represented in a very compact form using a netlist. Wikipedia's definition of the netlist is "a list of the electronic components in a circuit and a list of the nodes they are connected to". An example of how a netlist actually looks like is:
.SUBCKT test_misc1 IN OUT
V1 0 IN DC=4V
R1 IN 2
Q1 3 2 0 NPNstd
M1 OUT 3 0 NMOSstd
D1 OUT 0 DIODEstd
.ENDS
You can download binaries from Github releases. These binaries are not garantueed to work on your system. A better way to distribute applications for Linux would be using Flatpak. If you are interested in such work, please open an issue/PR.
Past versions, namely version 0.1 and version 0.2, were hosted in Sourceforge, see https://sourceforge.net/projects/netlistviewer/. All new developments have been moved into this Github project.
NetListViewer is a pretty simple application with 2 main dependencies: wxWidgets and Boost. Some simple notes on how to build NetListViewer for Windows and for Linux are available.
The software is usable even if it could be improved very much. Since the creation of the project (2010) I have not been using this tool anymore (I'm not doing any HW design anymore) so this software will not be further improved unless someone else wants to step up to improve it. Pull requests are of course welcome anyhow.