diff --git a/Tools/ZipFileDebugger/Program.cs b/Tools/ZipFileDebugger/Program.cs
new file mode 100644
index 000000000..035052102
--- /dev/null
+++ b/Tools/ZipFileDebugger/Program.cs
@@ -0,0 +1,100 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+
+namespace ZipFileDebugger
+{
+    class MainClass
+    {
+        public static void Main(string[] _args)
+        {
+            var args = new List<string>(_args);
+            var opts = Duplicati.Library.Utility.CommandLineParser.ExtractOptions(args, null);
+
+            if (args == null || args.Count == 0)
+            {
+                Console.WriteLine("Usage:");
+                Console.WriteLine("{0} <filename.zip>", System.Reflection.Assembly.GetEntryAssembly().Location);
+                return;
+            }
+
+            Duplicati.Library.Logging.Log.LogLevel = Duplicati.Library.Logging.LogMessageType.Profiling;
+            Duplicati.Library.Logging.Log.CurrentLog = new Duplicati.Library.Logging.StreamLog(Console.OpenStandardOutput());
+
+            var filecount = 0;
+            var errorcount = 0;
+            foreach (var file in args)
+            {
+                if (!File.Exists(file))
+                {
+                    Console.WriteLine("File not found: {0}", file);
+                    continue;
+                }
+
+                if (new FileInfo(file).Length == 0)
+                {
+                    Console.WriteLine("File is emtpy: {0}", file);
+                    continue;
+                }
+
+                Console.WriteLine("Opening zip file {0}", file);
+
+                var errors = false;
+
+                try
+                {
+                    filecount++;
+                    using (var zr = new Duplicati.Library.Compression.FileArchiveZip(file, opts))
+                    {
+                        var files = zr.ListFilesWithSize(null).ToArray();
+                        Console.WriteLine("Found {0} files in archive, testing read-ability for each", files.Length);
+
+                        for (var i = 0; i < files.Length; i++)
+                        {
+                            Console.Write("Opening file #{0} - {1}", i + 1, files[i].Key);
+                            try
+                            {
+                                using (var ms = new MemoryStream())
+                                using (var sr = zr.OpenRead(files[i].Key))
+                                {
+                                    sr.CopyTo(ms);
+
+                                    if (ms.Length == files[i].Value)
+                                        Console.WriteLine(" -- success");
+                                    else
+                                        Console.WriteLine(" -- bad length: {0} vs {1}", ms.Length, files[i].Value);
+                                }
+                            }
+                            catch (Exception ex)
+                            {
+                                errors = true;
+                                Console.WriteLine(" -- failed: {0}", ex);
+                            }
+
+                        }
+                    }
+
+                    if (errors)
+                    {
+                        Console.WriteLine("Found errors while processing file {0}", file);
+                        errorcount++;
+                    }
+					else
+                        Console.WriteLine("Processed file {0} with no errors", file);
+                }
+                catch (Exception ex)
+                {
+                    errorcount++;
+                    Console.WriteLine("Open failed: {0}", ex);
+                }
+            }
+
+            Console.Write("Processed {0} zip files", filecount);
+            if (errorcount == 0)
+                Console.WriteLine(" without errors");
+            else
+                Console.WriteLine(" and found {0} errors", errorcount);
+        }
+    }
+}
diff --git a/Tools/ZipFileDebugger/Properties/AssemblyInfo.cs b/Tools/ZipFileDebugger/Properties/AssemblyInfo.cs
new file mode 100644
index 000000000..581bb7691
--- /dev/null
+++ b/Tools/ZipFileDebugger/Properties/AssemblyInfo.cs
@@ -0,0 +1,26 @@
+using System.Reflection;
+using System.Runtime.CompilerServices;
+
+// Information about this assembly is defined by the following attributes. 
+// Change them to the values specific to your project.
+
+[assembly: AssemblyTitle("ZipFileDebugger")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("")]
+[assembly: AssemblyCopyright("")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// The assembly version has the format "{Major}.{Minor}.{Build}.{Revision}".
+// The form "{Major}.{Minor}.*" will automatically update the build and revision,
+// and "{Major}.{Minor}.{Build}.*" will update just the revision.
+
+[assembly: AssemblyVersion("1.0.*")]
+
+// The following attributes are used to specify the signing key for the assembly, 
+// if desired. See the Mono documentation for more information about signing.
+
+//[assembly: AssemblyDelaySign(false)]
+//[assembly: AssemblyKeyFile("")]
diff --git a/Tools/ZipFileDebugger/ZipFileDebugger.csproj b/Tools/ZipFileDebugger/ZipFileDebugger.csproj
new file mode 100644
index 000000000..8ad515a68
--- /dev/null
+++ b/Tools/ZipFileDebugger/ZipFileDebugger.csproj
@@ -0,0 +1,51 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{669E137C-1DD4-4134-81E8-D94C467392A9}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <RootNamespace>ZipFileDebugger</RootNamespace>
+    <AssemblyName>ZipFileDebugger</AssemblyName>
+    <TargetFrameworkVersion>v4.6.1</TargetFrameworkVersion>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug</OutputPath>
+    <DefineConstants>DEBUG;</DefineConstants>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release</OutputPath>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Program.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\..\Duplicati\Library\Compression\Duplicati.Library.Compression.csproj">
+      <Project>{19ECCE09-B5EB-406C-8C57-BAC66997D469}</Project>
+      <Name>Duplicati.Library.Compression</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\..\Duplicati\Library\Interface\Duplicati.Library.Interface.csproj">
+      <Project>{C5899F45-B0FF-483C-9D38-24A9FCAAB237}</Project>
+      <Name>Duplicati.Library.Interface</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\..\Duplicati\Library\Utility\Duplicati.Library.Utility.csproj">
+      <Project>{DE3E5D4C-51AB-4E5E-BEE8-E636CEBFBA65}</Project>
+      <Name>Duplicati.Library.Utility</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\..\Duplicati\Library\Logging\Duplicati.Library.Logging.csproj">
+      <Project>{D10A5FC0-11B4-4E70-86AA-8AEA52BD9798}</Project>
+      <Name>Duplicati.Library.Logging</Name>
+    </ProjectReference>
+  </ItemGroup>
+  <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
+</Project>
\ No newline at end of file
diff --git a/Tools/ZipFileDebugger/ZipFileDebugger.sln b/Tools/ZipFileDebugger/ZipFileDebugger.sln
new file mode 100644
index 000000000..5a51e47a6
--- /dev/null
+++ b/Tools/ZipFileDebugger/ZipFileDebugger.sln
@@ -0,0 +1,47 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 2012
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ZipFileDebugger", "ZipFileDebugger.csproj", "{669E137C-1DD4-4134-81E8-D94C467392A9}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Duplicati.Library.Compression", "..\..\Duplicati\Library\Compression\Duplicati.Library.Compression.csproj", "{19ECCE09-B5EB-406C-8C57-BAC66997D469}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Duplicati.Library.Interface", "..\..\Duplicati\Library\Interface\Duplicati.Library.Interface.csproj", "{C5899F45-B0FF-483C-9D38-24A9FCAAB237}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Duplicati.Library.Localization", "..\..\Duplicati\Library\Localization\Duplicati.Library.Localization.csproj", "{B68F2214-951F-4F78-8488-66E1ED3F50BF}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Duplicati.Library.Logging", "..\..\Duplicati\Library\Logging\Duplicati.Library.Logging.csproj", "{D10A5FC0-11B4-4E70-86AA-8AEA52BD9798}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Duplicati.Library.Utility", "..\..\Duplicati\Library\Utility\Duplicati.Library.Utility.csproj", "{DE3E5D4C-51AB-4E5E-BEE8-E636CEBFBA65}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{669E137C-1DD4-4134-81E8-D94C467392A9}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{669E137C-1DD4-4134-81E8-D94C467392A9}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{669E137C-1DD4-4134-81E8-D94C467392A9}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{669E137C-1DD4-4134-81E8-D94C467392A9}.Release|Any CPU.Build.0 = Release|Any CPU
+		{19ECCE09-B5EB-406C-8C57-BAC66997D469}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{19ECCE09-B5EB-406C-8C57-BAC66997D469}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{19ECCE09-B5EB-406C-8C57-BAC66997D469}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{19ECCE09-B5EB-406C-8C57-BAC66997D469}.Release|Any CPU.Build.0 = Release|Any CPU
+		{C5899F45-B0FF-483C-9D38-24A9FCAAB237}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{C5899F45-B0FF-483C-9D38-24A9FCAAB237}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{C5899F45-B0FF-483C-9D38-24A9FCAAB237}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{C5899F45-B0FF-483C-9D38-24A9FCAAB237}.Release|Any CPU.Build.0 = Release|Any CPU
+		{B68F2214-951F-4F78-8488-66E1ED3F50BF}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{B68F2214-951F-4F78-8488-66E1ED3F50BF}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{B68F2214-951F-4F78-8488-66E1ED3F50BF}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{B68F2214-951F-4F78-8488-66E1ED3F50BF}.Release|Any CPU.Build.0 = Release|Any CPU
+		{D10A5FC0-11B4-4E70-86AA-8AEA52BD9798}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{D10A5FC0-11B4-4E70-86AA-8AEA52BD9798}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{D10A5FC0-11B4-4E70-86AA-8AEA52BD9798}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{D10A5FC0-11B4-4E70-86AA-8AEA52BD9798}.Release|Any CPU.Build.0 = Release|Any CPU
+		{DE3E5D4C-51AB-4E5E-BEE8-E636CEBFBA65}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{DE3E5D4C-51AB-4E5E-BEE8-E636CEBFBA65}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{DE3E5D4C-51AB-4E5E-BEE8-E636CEBFBA65}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{DE3E5D4C-51AB-4E5E-BEE8-E636CEBFBA65}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+EndGlobal