Recommend me some usefull electronics related softwares

[Willen]

I am little beginner and doing some RF related projects. But I don't have any softwares like 'ExpressPCB'... Please if you have some veryusefull basic softwares, please give me links to download. Only recommend me Basic softwares with its functions because I am a beginner!

 

[cowboybob]

I would suggest "TINA-TI", free from Texas Instruments. It's a basic, relatively easy to learn how to use, expandable component library, circuit simulating package.

On this site (ETO) there are a lot of other preferences as well.

Just my opinion...

 

[panic mode]

if you are interested in simulating circuits, Linear offers free spice software.
for PCB there are many options, i personally use KiCad (opensource) but there are GEDA, Fritzing, Eagle, Diptrace, DesignSpark, Pads, Altium, etc.
note that most of them are demos or limited versions of commercial products.