diff --git a/repository/Grafoscopio/ExternalApp.class.st b/repository/Grafoscopio/ExternalApp.class.st
new file mode 100644
index 0000000..f6e0640
--- /dev/null
+++ b/repository/Grafoscopio/ExternalApp.class.st
@@ -0,0 +1,82 @@
+"
+I provide support for external helper apps for Grafoscopio, publishing, collaboration
+and data management.
+"
+Class {
+	#name : #ExternalApp,
+	#superclass : #Object,
+	#instVars : [
+		'name',
+		'url',
+		'downloadUrl',
+		'description',
+		'sha1',
+		'md5'
+	],
+	#category : #'Grafoscopio-Model'
+}
+
+{ #category : #configuration }
+ExternalApp class >> configureFossil [
+	"Stablish where is located pandoc according to the operative system and/or the input of the user"
+	| fileStream fossil |
+	
+	fileStream := UITheme builder 
+							fileOpen: 'Coloque la ruta de pandoc'.						
+	fileStream isNil ifTrue: [ ^nil ].
+	fossil := fileStream name asFileReference fullName.
+
+]
+
+{ #category : #configuration }
+ExternalApp class >> configurePandoc [
+	"Stablish where is located pandoc according to the operative system and/or the input of the user"
+	| fileStream pandoc |
+	
+	fileStream := UITheme builder 
+							fileOpen: 'Coloque la ruta de pandoc'.						
+	fileStream isNil ifTrue: [ ^nil ].
+	pandoc := fileStream name asFileReference fullName.
+
+]
+
+{ #category : #installation }
+ExternalApp class >> installSQLite32Bits [
+	"I dowload the SQLite binary for the hosting platform, uncompress it and made it available as with the name
+	NBSQLite is wating for"
+	
+	| packageUrl sha1 localPath packageZipName unzippedFolder |
+	
+	localPath := FileSystem disk workingDirectory parent / 'bin'.
+	Smalltalk platform name = 'unix'
+		ifTrue: [ 
+			packageUrl := 'http://sqlite.org/2016/sqlite-tools-linux-x86-3110100.zip'.
+			sha1 := '21a80cefa91d5de50256996fc55990a027c350fd'].
+	Smalltalk platform name = 'Win32'
+		ifTrue: [ 
+			packageUrl := 'http://sqlite.org/2016/sqlite-dll-win32-x86-3110100.zip'.
+			sha1 := 'cfd6f64ba1fb5de1ccf8321e29764c690c25e0a0'].
+	Smalltalk platform name = 'Mac OS'
+		ifTrue: [ 
+			packageUrl := 'http://sqlite.org/2016/sqlite-tools-osx-x86-3110100.zip'.
+			sha1 := 'c78b3b92bd37554694d2f73dbecfef1902c15ba7'].
+	GrafoscopioBrowser  
+		downloadingFrom: packageUrl 
+		withMessage: 'Descargando SQLite...' 
+		into: localPath asFileReference.
+	packageZipName := (packageUrl splitOn: '/') last.
+	sha1 = (SHA1 new hashMessage: (localPath / packageZipName) asFileReference binaryReadStream contents) hex
+		ifFalse: [ self inform: 'SQLite: Descarga no exitosa. Por favor intente el procedimiento de nuevo o manualmente'  ]
+		ifTrue: [
+			ZipArchive new
+				readFrom:  (localPath / packageZipName);
+				extractAllTo: localPath asFileReference.
+			unzippedFolder :=	packageZipName copyReplaceAll: '.zip' with: ''.
+			(localPath / unzippedFolder ) children do: [:file | file moveTo: (localPath / file basenameWithIndicator)].
+			(localPath / 'sqlite3') copyTo: (localPath / 'libsqlite3.so').
+			(localPath / unzippedFolder ) deleteAll.
+			self inform: 'SQLite instalado existosammente!'
+		].
+	"Cleaning leftovers"
+	(localPath / packageZipName) delete.
+]
diff --git a/repository/Grafoscopio/GrafoscopioBrowser.class.st b/repository/Grafoscopio/GrafoscopioBrowser.class.st
index 9bf8a76..3535d46 100644
--- a/repository/Grafoscopio/GrafoscopioBrowser.class.st
+++ b/repository/Grafoscopio/GrafoscopioBrowser.class.st
@@ -1,5 +1,5 @@
 "
-An UbakyeExplorer is  a graphical interface for showing trees and outlines.
+I am  a graphical interface for showing trees, outlines and grafoscopio notebooks.
 
 Instance Variables
 	browser:		<Object>
@@ -35,32 +35,6 @@ Class {
 	#category : #'Grafoscopio-UI'
 }
 
-{ #category : #configuration }
-GrafoscopioBrowser class >> configureFossil [
-	"Stablish where is located fossil according to the operative system and the input of the user"
-	| fileStream |
-	fileStream := UITheme builder 
-							fileOpen: 'Coloque la ruta de fossil'.
-							
-	fileStream isNil ifTrue: [ ^nil ].
-	fossil := fileStream name asFileReference fullName.
-]
-
-{ #category : #configuration }
-GrafoscopioBrowser class >> configurePandoc [
-	"Stablish where is located pandoc according to the operative system and/or the input of the user"
-	| fileStream |
-	
-	
-	
-	fileStream := UITheme builder 
-							fileOpen: 'Coloque la ruta de pandoc'.
-							
-	fileStream isNil ifTrue: [ ^nil ].
-	pandoc := fileStream name asFileReference fullName.
-
-]
-
 { #category : #configuration }
 GrafoscopioBrowser class >> configureSettings [
 	"I stablish several 'global' settings according to to image location and the operative system. 
@@ -132,38 +106,6 @@ GrafoscopioBrowser class >> downloadingFrom: downloadUrl withMessage: aString in
 	] asJob run.
 ]
 
-{ #category : #configuration }
-GrafoscopioBrowser class >> installSQLite32Bits [
-	"I dowload the SQLite binary for the hosting platform, uncompress it and made it available as with the name
-	NBSQLite is wating for"
-	
-	| packageUrl sha1 localPath packageZipName |
-	
-	localPath := FileSystem disk workingDirectory parent / 'bin'.
-	Smalltalk platform name = 'unix'
-		ifTrue: [ 
-			packageUrl := 'http://sqlite.org/2016/sqlite-tools-linux-x86-3110100.zip'.
-			sha1 := '21a80cefa91d5de50256996fc55990a027c350fd'].
-	Smalltalk platform name = 'Win32'
-		ifTrue: [ 
-			packageUrl := 'http://sqlite.org/2016/sqlite-dll-win32-x86-3110100.zip'.
-			sha1 := 'cfd6f64ba1fb5de1ccf8321e29764c690c25e0a0'].
-	Smalltalk platform name = 'Mac OS'
-		ifTrue: [ 
-			packageUrl := 'http://sqlite.org/2016/sqlite-tools-osx-x86-3110100.zip'.
-			sha1 := 'c78b3b92bd37554694d2f73dbecfef1902c15ba7'].
-	self 
-		downloadingFrom: packageUrl 
-		withMessage: 'Descargando SQLite...' 
-		into: localPath asFileReference.
-	packageZipName := (packageUrl splitOn: '/') last.
-	ZipArchive new
-		readFrom:  (localPath / packageZipName);
-		extractAllTo: localPath asFileReference.
-	(localPath / (packageZipName copyReplaceAll: '.zip' with: '')) children do: [:file | file moveTo: (localPath / file basenameWithIndicator) ]
-	
-]
-
 { #category : #'graphical interface' }
 GrafoscopioBrowser class >> messageAbout [
 	"Shows the author, license, sponsors and main contributors to the project and point to further documentation on the web"
@@ -327,8 +269,8 @@ GrafoscopioBrowser class >> startDockingBar [
 		add: 'Documentación > Tutorial' target: GrafoscopioBrowser selector: #updateTutorial; 
 		add: 'Documentación > Toda' target: GrafoscopioBrowser selector: #updateDocumentation; 
 		add: 'Herramientas externas' target: GrafoscopioBrowser selector: #messageNotImplementedYet;
-		add: 'Ruta a pandoc' target: GrafoscopioBrowser selector: #configurePandoc;
-		add: 'Ruta a fossil' target: GrafoscopioBrowser selector: #configureFossil;
+		add: 'Ruta a pandoc' target: ExternalApp selector: #configurePandoc;
+		add: 'Ruta a fossil' target: ExternalApp selector: #configureFossil;
 		add: 'Todo el sistema' target: GrafoscopioBrowser selector: #updateSystem.
 	
 	helpMenu := MenuMorph new.
@@ -824,7 +766,7 @@ GrafoscopioBrowser >> exportAsPdf [
 					self inform: 'Archivo exportado como pdf en: ', pdfFileLocation.].
 			Smalltalk platform name = 'Win32'
 				ifTrue: [ OSProcess command: pandoc, ' ', markdownFileLocation , ' -o ' , pdfFileLocation ]]
-		ifFalse: [GrafoscopioBrowser configurePandoc ].
+		ifFalse: [ExternalApp configurePandoc ].
 
 	self customKeys.