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I am constantly on the move and come across many computers to which I have access and which have some version of Windows installed. I was wondering if there's a portable alternative to LTspice (or if there's a way (a wrapper or something equivalent) by which I can install it on my USB stick and use it anywhere)?

A quick Google search revealed no obvious alternative. There are a few online spice simulators like circuitlab.com, partsim.com and ngspice.com. But none are too keen to explain their limitations for free use. For instance, I tried reading the terms of service for partsim.com, but that too wasn't very enlightening. I wanted some advice before signing up.

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closed as primarily opinion-based by Chetan Bhargava, Leon Heller, Joe Hass, Daniel Grillo, Matt Young Apr 15 at 12:59

Many good questions generate some degree of opinion based on expert experience, but answers to this question will tend to be almost entirely based on opinions, rather than facts, references, or specific expertise.If this question can be reworded to fit the rules in the help center, please edit the question.

    
LTSpice is essentially portable already - it doesn't need any registry entries or admin privileges to work. Just copy the folder over to your flash drive and away you go. –  Peter K Apr 15 at 6:45

3 Answers 3

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LTSpice is essentially portable already - it doesn't need any registry entries or admin privileges to work. Just copy the folder over to your flash drive and away you go.

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I've used LTSpice like this for years ... except now my PC has been locked down so that Any unknown exe requires admin. This is a very recent issue for me but all the previous PC's this worked on... I get round this by asking IT to install it. This does require a Boss and IT to agree. In most cases a free repected engineering tool shouldn't be a problem. –  Spoon Apr 15 at 7:37
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It seems to store preferences to a Windows directory.. is there a way to change that? –  Spehro Pefhany Apr 15 at 12:56

Considered an Smartphone app? Not as functional as LTSpice but works for simple things:

https://play.google.com/store/apps/details?id=com.everycircuit

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You could make a bootable USB stick with Linux on it and run LTSpice from Wine.

http://ubuntuforums.org/showthread.php?t=1824277

Or make a virtual machine and bring the "virtual file" with you. VirtualBox for instance. But then you have to install the VirtualBox application on every computer, and I guess that is as bad (or worse) as installing LTSpice on them.

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VirtualBox will not run well without admin privileges (needs a kernel driver for hardware accelerated virtualization). LTSpice is already portable, it can be copied to a folder and run directly. –  Peter K Apr 15 at 7:13
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True about VB. Sorry about the n00b question, but if LTSpice is portable, why not post is as an answer? –  Dejvid_no1 Apr 15 at 7:23
    
I guess that's a good point. Done. –  Peter K Apr 15 at 7:24

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