diff --git a/.gitignore b/.gitignore
index 099f639..11fb8de 100644
--- a/.gitignore
+++ b/.gitignore
@@ -43,3 +43,4 @@ jspm_packages
 .vscode
 
 package-lock.json
+apps/
\ No newline at end of file
diff --git a/config.js b/config.js
index 9c32b26..601b4bb 100644
--- a/config.js
+++ b/config.js
@@ -20,6 +20,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 let fs = require('fs');
 let argv = require('minimist')(process.argv.slice(2));
 let utils = require('./libs/utils');
+let apps = require('./libs/apps');
 const spawnSync = require('child_process').spawnSync;
 
 if (argv.help){
@@ -141,8 +142,8 @@ config.maxConcurrency = parseInt(argv.max_concurrency || fromConfigFile("maxConc
 config.maxRuntime = parseInt(argv.max_runtime || fromConfigFile("maxRuntime", -1));
 
 // Detect 7z availability
-config.has7z = spawnSync("7z", ['--help']).status === 0;
-config.hasUnzip = spawnSync("unzip", ['--help']).status === 0;
+config.has7z = spawnSync(apps.sevenZ, ['--help']).status === 0;
+config.hasUnzip = spawnSync(apps.unzip, ['--help']).status === 0;
 
 
 module.exports = config;
diff --git a/libs/apps.js b/libs/apps.js
new file mode 100644
index 0000000..76fbbff
--- /dev/null
+++ b/libs/apps.js
@@ -0,0 +1,34 @@
+/* 
+Node-OpenDroneMap Node.js App and REST API to access OpenDroneMap. 
+Copyright (C) 2016 Node-OpenDroneMap Contributors
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+const fs = require('fs');
+const path = require('path');
+
+let sevenZ = "7z";
+let unzip = "unzip";
+
+if (fs.existsSync(path.join("apps", "7z", "7z.exe"))){
+    sevenZ = path.resolve(path.join("apps", "7z", "7z.exe"));
+}
+
+if (fs.existsSync(path.join("apps", "unzip", "unzip.exe"))){
+    unzip = path.resolve(path.join("apps", "unzip", "unzip.exe"));
+}
+
+module.exports = {
+    sevenZ, unzip
+};
\ No newline at end of file
diff --git a/libs/processRunner.js b/libs/processRunner.js
index 7c356f2..84eec19 100644
--- a/libs/processRunner.js
+++ b/libs/processRunner.js
@@ -17,6 +17,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 "use strict";
 let fs = require('fs');
+let apps = require('./apps');
 let path = require('path');
 let assert = require('assert');
 let spawn = require('child_process').spawn;
@@ -92,14 +93,14 @@ module.exports = {
                      },
                      ["projectFolderPath"]),
 
-    sevenZip: makeRunner("7z", function(options){
+    sevenZip: makeRunner(apps.sevenZ, function(options){
             return ["a", "-mx=0", "-y", "-r", "-bd", options.destination].concat(options.pathsToArchive);
         },
         ["destination", "pathsToArchive", "cwd"],
         null,
         false),
 
-    sevenUnzip: makeRunner("7z", function(options){
+    sevenUnzip: makeRunner(apps.sevenZ, function(options){
             let cmd = "x"; // eXtract files with full paths
             if (options.noDirectories) cmd = "e"; //Extract files from archive (without using directory names)
 
@@ -109,7 +110,7 @@ module.exports = {
         null,
         false),
 
-    unzip: makeRunner("unzip", function(options){
+    unzip: makeRunner(apps.unzip, function(options){
             const opts = options.noDirectories ? ["-j"] : [];
             return opts.concat(["-qq", "-o", options.file, "-d", options.destination]);
         },