ArcVieh

You can select images from media Library in the Widgets backend that will be shown on your Page. You can enter a size for the images.
The thumb-images will be linked to the full-sized-image. 
Requieres PHP 5!

Media Images Widget

Requieres PHP 5! You can select images from media Library in the Widgets backend that will be shown on your Page.

Turker YILDIRIM

Be careful when using this plugin.
Sometimes you may need to update files, like product or property photos, without deleting old one before uploading new one. In such cases you can use this plugin to replace old files with new ones.
OverWrite It makes a filename search in <code>wp-content\uploads</code> folder recursively and replaces first matching file with the uploading one.
Keep in mind there is no excluded files, folders or file types so double check everything before uploading anything while the plugin is active.
<h3>Languages</h3>
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OverWrite It

I have been searching for similar plugin, some of them didn't work for me but this one does. Thanks

It works

When you upload files, OverWrite It jumps into the scene to replace old file with uploading one.

Media Images Widget vs OverWrite It