diff --git a/scripts/cs/logisim.sh b/scripts/cs/logisim.sh
new file mode 100644
index 0000000..be9f269
--- /dev/null
+++ b/scripts/cs/logisim.sh
@@ -0,0 +1,68 @@
+#!/bin/sh -e
+
+# JFLAP installer script for TigerOS
+# author: Josh Bicking <jhb2345@rit.edu>
+
+DEPS=java-1.8.0-openjdk
+PROG=Logisim
+FILE=/usr/share/java/logisim.jar
+FILE_URL=https://sourceforge.net/projects/circuit/files/2.3.x/2.3.1/logisim-2.3.1.jar/download
+LINK=/usr/local/bin/logisim
+ICON_URL=https://upload.wikimedia.org/wikipedia/commons/thumb/b/ba/Logisim-icon.svg/48px-Logisim-icon.svg.png
+
+
+# Check that the current user is root
+if [ $EUID != 0 ]
+then
+    echo "Please run this script as root (sudo $@$0)."
+    exit
+fi
+
+## Removal
+# Check if remove flag was passed
+if [ ! -z "$1" ] && [ "$1" = "--remove" ]
+  then
+
+    rm $LINK
+    rm /usr/local/share/applications/$PROG.desktop
+    rm $FILE
+    rm /usr/local/share/icons/$PROG.jpg
+
+else 
+
+    ## Installation
+    # Install dependencies
+    dnf install $DEPS -y
+
+    # Get the files
+    curl -o $FILE $FILE_URL
+
+    # Make a link
+    cat > $LINK <<EOF
+#!/bin/sh
+cd \$HOME
+java -jar $FILE
+EOF
+
+    chmod +x $LINK
+    chmod +x $FILE
+
+
+    # Make a desktop file
+    cat > /usr/local/share/applications/$PROG.desktop <<EOF
+[Desktop Entry]
+Type=Application
+Version=2.3.1
+Name=$PROG
+Comment=A grahical tool for designing and simulating logic circuits.
+Path=
+Exec=$LINK
+Icon=/usr/local/share/icons/$PROG.jpg
+Terminal=false
+Categories=Education;Languages;Java;
+EOF
+    
+    # Get the icons
+    mkdir -p /usr/local/share/icons
+    curl -o /usr/local/share/icons/$PROG.png $ICON_URL
+fi
diff --git a/scripts/postinstall b/scripts/postinstall
index f60e024..4972009 100644
--- a/scripts/postinstall
+++ b/scripts/postinstall
@@ -21,7 +21,7 @@ do
     case $opt in
         "CS")
             echo -e "Welcome to the TigerOS CS package installer script.\n 
-                  This script will install Intellij IDEA, PyCharm, PROLOG, Racket and JFLAP on your machine."
+                  This script will install Intellij IDEA, PyCharm, PROLOG, Racket, Logisim and JFLAP on your machine."
             while true; do
             read -p "Do you wish to continue? [y/n] " yn
             case $yn in
@@ -33,6 +33,7 @@ do
             # TODO Pycharm
             # TODO PROLOG
             # TODO Racket
+			./cs/logisim.sh
             ./cs/jflap.sh
             ;;
         "IT/WMC")
@@ -51,8 +52,7 @@ do
             echo "mysql installed see "https://dev.mysql.com/doc/mysql-yum-repo-quick-guide/en/" step 4 for further instructions"
             dnf install -y mongodb
             semanage port -a -t mongod_port_t -p tcp 27017
-            # dnf install -y httpd
-            dnf install -y subversion filezilla nodejs php
+            dnf install -y subversion filezilla nodejs
             #call jGRASP script here
             mysql_secure_installation
             echo "Install finished"
@@ -69,13 +69,15 @@ do
             esac
             done
             dnf install -y wireshark-gtk python python3 
+			groupadd wireshark
+			usermod -aG wireshark $USER
             #call jGrasp installer script here
             echo "Install finished"
             exit
             ;;
         "SE")
             echo -e "Welcome to the TigerOS SE package installer script.\n
-            This script will install ruby, eclipse, Spin, sqlite3 and MIT Alloy on you machine."
+            This script will install ruby, eclipse, Spin, sqlite3, plantUML, gitk and MIT Alloy on you machine."
             while true; do
             read -p "Do you wish to continue? [y/n] " yn
             case $yn in
@@ -83,7 +85,7 @@ do
             [Nn]* ) exit;;
             esac
             done
-            dnf install -y eclipse-jdt ruby sqlite 
+            dnf install -y eclipse-jdt ruby sqlite plantuml gitk geany
             ./se/spin.sh && ./se/alloy.sh 
             echo "Install finished"
             exit
diff --git a/scripts/removal b/scripts/removal
old mode 100755
new mode 100644
index 66ca3e4..f1b3c96
--- a/scripts/removal
+++ b/scripts/removal
@@ -73,7 +73,7 @@ do
                     [Nn]* ) exit;;
                 esac
             done
-            sudo dnf -y remove eclipse-jdt ruby sqlite
+            sudo dnf -y remove eclipse-jdt ruby sqlite gitk plantuml
             # Spin and Alloy need to be implemented in installer script before removal.
             echo "All files have been removed."
             exit