4 added offline tag and portable tag
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3 deleted 3 characters in body
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I have low system memory and work in a pretty safe environment so don't feel it wise to have a big antivirus running in background all the time.
I I also have multiple systems so a portable AV that I can place in all of them through a USB stick would be the nicest option for me.

I have tried ClamWin Portable, but it is far too slow to scan and its virus detecting skills is on the lower side.

Other antivirus solutions mentioned here and there in discussion forums are less known and I am not sure whether to try them or not.

I have low system memory and work in a pretty safe environment so don't feel it wise to have a big antivirus running in background all the time.
I also have multiple systems so a portable AV that I can place in all of them through a USB stick would be the nicest option for me.

I have tried ClamWin Portable, but it is far too slow to scan and its virus detecting skills is on the lower side.

Other antivirus solutions mentioned here and there in discussion forums are less known and I am not sure whether to try them or not.

I have low system memory and work in a pretty safe environment so don't feel it wise to have a big antivirus running in background all the time. I also have multiple systems so a portable AV that I can place in all of them through a USB stick would be the nicest option for me.

I have tried ClamWin Portable, but it is far too slow to scan and its virus detecting skills is on the lower side.

Other antivirus solutions mentioned here and there in discussion forums are less known and I am not sure whether to try them or not.

2 copyediting; removed fluff from title and added important information
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Recommend portable Portable offline virus scanner for a low-memory system

I have a low system memory and work in a pretty safe environment so don't feel it wise to have a big AVantivirus running in background all the time.
I also have multiple systems so a portable AV that I can place in all of them through a USB stick would be the nicest option for me.

I have tried ClamWin Portable, but it is far too slow to scan and it'sits virus detecting skills is on the lower side.  

Other antivirusantivirus solutions mentioned here and there in discussion forums are less known and I am not sure whether to try them or not.

Recommend portable offline virus scanner

I have a low system memory and work in a pretty safe environment so don't feel it wise to have a big AV running in background all the time.
I also have multiple systems so a portable AV that I can place in all of them through a USB would be the nicest option for me.

I have tried ClamWin Portable but it is far too slow to scan and it's virus detecting skills is on the lower side.  

Other antivirus solutions mentioned here and there in discussion forums are less known and I am not sure whether to try them or not.

Portable offline virus scanner for a low-memory system

I have low system memory and work in a pretty safe environment so don't feel it wise to have a big antivirus running in background all the time.
I also have multiple systems so a portable AV that I can place in all of them through a USB stick would be the nicest option for me.

I have tried ClamWin Portable, but it is far too slow to scan and its virus detecting skills is on the lower side.

Other antivirus solutions mentioned here and there in discussion forums are less known and I am not sure whether to try them or not.

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