README.md: List libraries and tools used, explain differente to ADFscan

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--- a/README.md
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@@ -54,6 +54,18 @@ If you abort the process by pressing Ctrl+C, there will be
 stale files in /tmp.
 
 
+Libraries used
+---------------
+
+This script makes use of the following tools and libraries:
+
+ - CheckX - the virus scanner
+ - xvs.library - virus signature collection
+ - xadmaster.library - archive unpacker (`.lha`, `.adf`, ...)
+ - xfdmaster.library - decruncher (for packed executables, ...)
+ - UAEquit - to shut down the emulator when done.
+
+
 Dependencies
 -------------
 
@@ -62,6 +74,13 @@ Aminet unless they have already been cached locally.
 
 See `installer_urls` for details.
 
+It requires the following tools to be installed on the host:
+
+    curl
+    lha
+    fs-uae
+    sha256sum
+
 
 Security
 ---------
@@ -76,6 +95,19 @@ virus scanner, it won't be able to break the host unless it
 also breaks FS-UAE.
 
 
+Comparison to similar tools
+----------------------------
+
+- ADFscan: The original inspiration for this project.
+  This is a Visual Basic application scanning for only a
+  handful of the most common signatures. It has its own
+  unpacker for Amiga OFS to be able to scan ADFs.
+
+  + amiga-uae-virus-scan uses well-known Amiga libraries and
+    tools to perform these tasks, allowing it to detect more
+    viruses and unpack more formats, by order(s) of magnitude.
+
+
 
 Thanks
 =======