What is the Best Software to Simulate circuits inside PC?

[Nipuna]

What is the Best Software to Simulate circuits inside PC.

Herath told me about Yenka.

I searched on the net and found some software but i need you Guys answer to find the best one.

I had used Electronic Workbench and It is working on windows 7 too but it has some problems.

So I am Excepting an Answer.

Thanks

[Neo]

There are many... OrCAD (Pspice simulator), Altium, Multisim, Proteus, Easy PC with Spice, Tina, etc....
Proteus is good for beginners to advance users whereas OrCAD & Altium are for professional users.

I didn't hear the one that Herath mentioned but you can give it a try too.

[SemiconductorCat]

I'm using the multisim these days.
But very soon it's license will be expired.

Here is a simple relaxation oscillator circuit , that I have tested.(today).
Sounds not bad.

And it support MCU simulations, for a example you could write the code for 8051 and
run it on the simulator.

[Hasula]

Actually multisim is good if you are a beginner.I also use multisim but Orcad is better