diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 9a36f599e5..d6c19a379e 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -282,12 +282,13 @@ jobs:
       - name: Compress Service Logs Before upload
         if: ${{ failure() }}
         run: |
+          ./tools/launchdev.sh stop # stop st2 before collecting logs
           tar cvzpf logs.tar.gz logs/*
       - name: Upload StackStorm services Logs
         if: ${{ failure() }}
         uses: actions/upload-artifact@v2
         with:
-          name: logs
+          name: logs-py${{ matrix.python-version }}
           path: logs.tar.gz
           retention-days: 7
       - name: Stop Redis Service Container
@@ -690,12 +691,13 @@ jobs:
       - name: Compress Service Logs Before upload
         if: ${{ failure() && env.TASK == 'ci-integration' }}
         run: |
+          ./tools/launchdev.sh stop # stop st2 before collecting logs
           tar cvzpf logs.tar.gz logs/*
       - name: Upload StackStorm services Logs
         if: ${{ failure() && env.TASK == 'ci-integration' }}
         uses: actions/upload-artifact@v2
         with:
-          name: logs
+          name: logs-py${{ matrix.python-version }}-nose-${{ matrix.nosetests_node_index }}
           path: logs.tar.gz
           retention-days: 7
       - name: Stop Redis Service Container
diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 9c9a2cef73..c86714fc11 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -18,6 +18,7 @@ Changed
 * Switch to python3's standard lib unittest from unittest2, a backport of python3 unittest features for python2. #6187 (by @nzlosh)
 * Drop Python 3.6 testing in CircleCI. #6080
   Contributed by (@philipphomberger Schwarz IT KG)
+* Refactor `tools/launchdev.sh` to use `tmux` instead of `screen`. #6186 (by @nzlosh and @cognifloyd)
 
 Added
 ~~~~~
diff --git a/dev_docs/Troubleshooting_Guide.rst b/dev_docs/Troubleshooting_Guide.rst
index f61cedcba4..1b89ca8a71 100644
--- a/dev_docs/Troubleshooting_Guide.rst
+++ b/dev_docs/Troubleshooting_Guide.rst
@@ -40,17 +40,15 @@ As we can see from above output port ``9101`` is not even up. To verify this let
   vagrant  32403  0.2  1.5  79228 31364 pts/3    Ss+  18:27   0:00 /home/vagrant/git/st2/virtualenv/bin/python
   ./virtualenv/bin/gunicorn st2stream.wsgi:application -k eventlet -b 0.0.0.0:9102 --workers 1
 
-- This suggests that the API process crashed, we can verify that by running ``screen -ls``.::
+- This suggests that the API process crashed, we can verify that by running ``tmux ls``.::
 
 .. code:: bash
 
-  $ screen -ls
-    There are screens on:
-	 15781.st2-auth	(04/26/2016 06:39:10 PM)	(Detached)
-	 15778.st2-notifier	(04/26/2016 06:39:10 PM)	(Detached)
-	 15767.st2-sensorcontainer	(04/26/2016 06:39:10 PM)	(Detached)
-	 15762.st2-stream	(04/26/2016 06:39:10 PM)	(Detached)
-    3 Sockets in /var/run/screen/S-vagrant.
+  $ tmux ls
+  st2-auth: 1 windows (created Fri Apr 19 00:42:58 2024)
+  st2-notifier: 1 windows (created Fri Apr 19 00:42:58 2024)
+  st2-sensorcontainer: 1 windows (created Fri Apr 19 00:42:58 2024)
+  st2-stream: 1 windows (created Fri Apr 19 00:42:58 2024)
 
 - Now let us check the logs for any errors:
 
diff --git a/scripts/github/prepare-integration.sh b/scripts/github/prepare-integration.sh
index 9e13ade526..a9011bc080 100755
--- a/scripts/github/prepare-integration.sh
+++ b/scripts/github/prepare-integration.sh
@@ -30,23 +30,23 @@ echo ""
 python ./st2client/setup.py develop
 st2 --version
 
-# Clean up old screen log files
-rm -f logs/screen-*.log
+# Clean up old st2 log files
+rm -f logs/st2*.log
 
 # ::group::/::endgroup:: is helpful github actions syntax to fold this section.
 echo ::group::launchdev.sh start -x
 
-# start dev environment in screens
+# start dev environment in tmux
 ./tools/launchdev.sh start -x
 
 # Give processes some time to start and check logs to see if all the services
 # started or if there was any error / failure
-echo "Giving screen processes some time to start..."
+echo "Giving st2 processes some time to start..."
 sleep 10
 
-echo " === START: Catting screen process log files. ==="
-cat logs/screen-*.log
-echo " === END: Catting screen process log files. ==="
+echo " === START: Catting st2 process log files. ==="
+cat logs/st2-*.log
+echo " === END: Catting st2 process log files. ==="
 
 # github actions: fold for launchdev.sh start -x
 echo ::endgroup::
diff --git a/tools/launchdev.sh b/tools/launchdev.sh
index d0c777f996..82d0083f09 100755
--- a/tools/launchdev.sh
+++ b/tools/launchdev.sh
@@ -1,7 +1,18 @@
 #!/usr/bin/env bash
 
+set +x
+
 function usage() {
-    echo "Usage: $0 [start|stop|restart|startclean] [-r runner_count] [-s scheduler_count] [-w workflow_engine_count] [-g] [-x] [-c] [-6] [-m]" >&2
+    cat<<EOF >&2
+    Usage: $0 [start|stop|restart|startclean] [-r runner_count] [-s scheduler_count] [-w workflow_engine_count] [-g] [-x] [-c] [-6]
+     -r : the number of st2runner instances start
+     -s : the numer of st2scheduler instances to start
+     -w : the numer of st2workflow-engine instances to start
+     -g : disable gunicorn
+     -x : enable copy test packs
+     -c : disable load content
+     -6 : enable use of ipv6
+EOF
 }
 
 subcommand=$1; shift
@@ -49,13 +60,49 @@ while getopts ":r:s:w:gxcu6" o; do
     esac
 done
 
-function init(){
+# Colour echo
+function cecho()
+{
+    if [[ "$1" == "-n" ]]; then
+        # No carrage return
+        NCR="$1"; shift
+    else
+        NCR=""
+    fi
+    C="$1"; shift
+    MSG="$1"
+    echo $NCR -e "\e[${C}m${MSG}\e[0m"
+}
+
+function heading()
+{
+    MSG="$1"
+    cecho "34;7" "$MSG"
+}
+function iecho()
+{
+    MSG="$1"
+    cecho "37;1" "$MSG"
+}
+function wecho()
+{
+    MSG="$1"
+    cecho "33;1" "$MSG"
+}
+function eecho()
+{
+    MSG="$1"
+    cecho "31;1" "$MSG"
+}
+function init()
+{
+    heading "Initialising system variables ..."
     ST2_BASE_DIR="/opt/stackstorm"
     COMMAND_PATH=${0%/*}
-    CURRENT_DIR=`pwd`
-    CURRENT_USER=`whoami`
-    CURRENT_USER_GROUP=`id -gn`
-    echo "Current user:group = ${CURRENT_USER}:${CURRENT_USER_GROUP}"
+    CURRENT_DIR=$(pwd)
+    CURRENT_USER=$(whoami)
+    CURRENT_USER_GROUP=$(id -gn)
+    echo -n "Current user:group = "; iecho "${CURRENT_USER}:${CURRENT_USER_GROUP}"
 
     if [[ (${COMMAND_PATH} == /*) ]] ;
     then
@@ -63,75 +110,76 @@ function init(){
     else
         ST2_REPO=${CURRENT_DIR}/${COMMAND_PATH}/..
     fi
-
+    ST2_LOGS="${ST2_REPO}/logs"
     VIRTUALENV=${VIRTUALENV_DIR:-${ST2_REPO}/virtualenv}
     VIRTUALENV=$(readlink -f ${VIRTUALENV})
     PY=${VIRTUALENV}/bin/python
     PYTHON_VERSION=$(${PY} --version 2>&1)
 
-    echo "Using virtualenv: ${VIRTUALENV}"
-    echo "Using python: ${PY} (${PYTHON_VERSION})"
+    echo -n "Using virtualenv: "; iecho "${VIRTUALENV}"
+    echo -n "Using python: "; iecho "${PY} (${PYTHON_VERSION})"
+    echo -n "Log file location: "; iecho "${ST2_LOGS}"
 
     if [ -z "$ST2_CONF" ]; then
         ST2_CONF=${ST2_REPO}/conf/st2.dev.conf
     fi
 
     ST2_CONF=$(readlink -f ${ST2_CONF})
-    echo "Using st2 config file: $ST2_CONF"
+    echo -n "Using st2 config file: "; iecho "$ST2_CONF"
 
     if [ ! -f "$ST2_CONF" ]; then
-        echo "Config file $ST2_CONF does not exist."
+        eecho "Config file $ST2_CONF does not exist."
         exit 1
     fi
 
 }
 
-function exportsdir(){
+function exportsdir()
+{
     local EXPORTS_DIR=$(grep 'dump_dir' ${ST2_CONF} | sed -e "s~^dump_dir[ ]*=[ ]*\(.*\)~\1~g")
     if [ -z $EXPORTS_DIR ]; then
         EXPORTS_DIR="/opt/stackstorm/exports"
     fi
-    echo "$EXPORTS_DIR"
+    echo -n "Export directories: "; iecho "$EXPORTS_DIR"
 }
 
-function st2start(){
-    echo "Starting all st2 servers..."
+function st2start()
+{
+    heading "Starting all st2 servers ..."
 
     # Determine where the st2 repo is located. Some assumption is made here
     # that this script is located under st2/tools.
 
     # Change working directory to the root of the repo.
-    echo "Changing working directory to ${ST2_REPO}"
+    echo -n "Changing working directory to "; iecho "${ST2_REPO}"
     cd ${ST2_REPO}
 
-    BASE_DIR=$(grep 'base_path' ${ST2_CONF} \
-        | awk 'BEGIN {FS=" = "}; {print $2}')
+    BASE_DIR=$(grep 'base_path' ${ST2_CONF} | awk 'BEGIN {FS=" = "}; {print $2}')
     if [ -z BASE_DIR ]; then
         BASE_DIR="/opt/stackstorm"
     fi
     CONFIG_BASE_DIR="${BASE_DIR}/configs"
-    echo "Using config base dir: $CONFIG_BASE_DIR"
+    echo -n "Using config base dir: "; iecho "$CONFIG_BASE_DIR"
 
     if [ ! -d "$CONFIG_BASE_DIR" ]; then
-        echo "$CONFIG_BASE_DIR doesn't exist. Creating..."
+        wecho "$CONFIG_BASE_DIR doesn't exist. Creating ..."
         sudo mkdir -p $CONFIG_BASE_DIR
     fi
 
-    PACKS_BASE_DIR=$(grep 'packs_base_path' ${ST2_CONF} \
-        | awk 'BEGIN {FS=" = "}; {print $2}')
+    PACKS_BASE_DIR=$(grep 'packs_base_path' ${ST2_CONF} | awk 'BEGIN {FS=" = "}; {print $2}')
     if [ -z $PACKS_BASE_DIR ]; then
         PACKS_BASE_DIR="/opt/stackstorm/packs"
     fi
-    echo "Using content packs base dir: $PACKS_BASE_DIR"
+    echo -n "Using content packs base dir: "; iecho "$PACKS_BASE_DIR"
 
     # Copy and overwrite the action contents
     if [ ! -d "$ST2_BASE_DIR" ]; then
-        echo "$ST2_BASE_DIR doesn't exist. Creating..."
+        wecho "$ST2_BASE_DIR doesn't exist. Creating ..."
         sudo mkdir -p $PACKS_BASE_DIR
     fi
 
     if [ "${use_ipv6}" = true ]; then
-        echo '  using IPv6 bindings...'
+        echo '  using IPv6 bindings ...'
         BINDING_ADDRESS="[::]"
     else
         BINDING_ADDRESS="0.0.0.0"
@@ -150,7 +198,7 @@ function st2start(){
     cp -Rp ./contrib/packs/ $PACKS_BASE_DIR
 
     if [ "$copy_test_packs" = true ]; then
-        echo "Copying test packs examples and fixtures to $PACKS_BASE_DIR"
+        echo -n "Copying test packs examples and fixtures to "; iecho "$PACKS_BASE_DIR"
         cp -Rp ./contrib/examples $PACKS_BASE_DIR
         # Clone st2tests in /tmp directory.
         pushd /tmp
@@ -162,138 +210,113 @@ function st2start(){
             cp -Rp ./st2tests/packs/fixtures $PACKS_BASE_DIR
             rm -R st2tests/
         else
-            echo "Failed to clone st2tests repo"
+            eecho "Failed to clone st2tests repo"
         fi
         popd
     fi
 
     # activate virtualenv to set PYTHONPATH
     source ${VIRTUALENV}/bin/activate
+    # set configuration file location.
+    export ST2_CONFIG_PATH=${ST2_CONF};
 
-    # Kill existing st2 screens
-    screen -wipe
-    screen -ls | grep st2 &> /dev/null
-    if [ $? == 0 ]; then
-        echo 'Killing existing st2 screen sessions...'
-        screen -ls | grep st2 | cut -d. -f1 | awk '{print $1}' | xargs kill
-    fi
-
-    # NOTE: We can't rely on latest version of screen with "-Logfile path"
-    # option so we need to use screen config file per screen window
+    # Kill existing st2 terminal multiplexor sessions
+    for tmux_session in $(tmux ls | awk -F: '/^st2-/ {print $1}')
+    do
+        echo "Kill existing session $tmux_session"
+        tmux kill-session -t $tmux_session
+    done
 
     # Run the st2 API server
-    echo 'Starting screen session st2-api...'
     if [ "${use_gunicorn}" = true ]; then
-        echo '  using gunicorn to run st2-api...'
-        export ST2_CONFIG_PATH=${ST2_CONF}
-        screen -L -c tools/screen-configs/st2api.conf -d -m -S st2-api ${VIRTUALENV}/bin/gunicorn \
-            st2api.wsgi:application -k eventlet -b "$BINDING_ADDRESS:9101" --workers 1
+        echo 'Starting st2-api using gunicorn ...'
+        tmux new-session -d -s st2-api "export ST2_CONFIG_PATH=${ST2_CONF}; source ${VIRTUALENV}/bin/activate; ${VIRTUALENV}/bin/gunicorn st2api.wsgi:application -k eventlet -b $BINDING_ADDRESS:9101 --workers 1 2>&1 | tee -a ${ST2_LOGS}/st2-api.log"
     else
-        screen -L -c tools/screen-configs/st2api.conf -d -m -S st2-api ${VIRTUALENV}/bin/python \
-            ./st2api/bin/st2api \
-            --config-file $ST2_CONF
+        echo 'Starting st2-api ...'
+        tmux new-session -d -s st2-api "export ST2_CONFIG_PATH=${ST2_CONF}; source ${VIRTUALENV}/bin/activate; ${VIRTUALENV}/bin/python ./st2api/bin/st2api --config-file $ST2_CONF 2>&1 | tee -a ${ST2_LOGS}/st2-api.log"
     fi
 
     # Run st2stream API server
     if [ "${use_gunicorn}" = true ]; then
-        echo '  using gunicorn to run st2-stream'
-        export ST2_CONFIG_PATH=${ST2_CONF}
-        screen -L -c tools/screen-configs/st2stream.conf -d -m -S st2-stream ${VIRTUALENV}/bin/gunicorn \
-            st2stream.wsgi:application -k eventlet -b "$BINDING_ADDRESS:9102" --workers 1
+        echo 'Starting st2-stream using gunicorn ...'
+        tmux new-session -d -s st2-stream "export ST2_CONFIG_PATH=${ST2_CONF}; source ${VIRTUALENV}/bin/activate; ${VIRTUALENV}/bin/gunicorn st2stream.wsgi:application -k eventlet -b $BINDING_ADDRESS:9102 --workers 1 2>&1 | tee -a ${ST2_LOGS}/st2-stream.log"
     else
-        screen -L -c tools/screen-configs/st2stream.conf -d -m -S st2-stream ${VIRTUALENV}/bin/python \
-            ./st2stream/bin/st2stream \
-            --config-file $ST2_CONF
+        echo 'Starting st2-stream ...'
+        tmux new-session -d -s st2-stream "export ST2_CONFIG_PATH=${ST2_CONF}; source ${VIRTUALENV}/bin/activate; ${VIRTUALENV}/bin/python ./st2stream/bin/st2stream --config-file $ST2_CONF 2>&1 | tee -a ${ST2_LOGS}/st2-stream.log"
     fi
 
+    # give st2stream time to startup and load things into database
+    sleep 10
+
     # Run the workflow engine server
-    echo 'Starting screen session st2-workflow(s)'
-    WORKFLOW_ENGINE_SCREENS=()
+    echo 'Starting st2-workflow engine(s):'
+    WORKFLOW_ENGINE_SESSIONS=()
     for i in $(seq 1 $workflow_engine_count)
     do
         WORKFLOW_ENGINE_NAME=st2-workflow-$i
-        WORKFLOW_ENGINE_SCREENS+=($WORKFLOW_ENGINE_NAME)
-        echo '  starting '$WORKFLOW_ENGINE_NAME'...'
-        screen -L -c tools/screen-configs/st2workflowengine.conf -d -m -S $WORKFLOW_ENGINE_NAME ${VIRTUALENV}/bin/python \
-            ./st2actions/bin/st2workflowengine \
-            --config-file $ST2_CONF
+        WORKFLOW_ENGINE_SESSIONS+=($WORKFLOW_ENGINE_NAME)
+        echo "   $WORKFLOW_ENGINE_NAME ..."
+        tmux new-session -d -s $WORKFLOW_ENGINE_NAME "export ST2_CONFIG_PATH=${ST2_CONF}; source ${VIRTUALENV}/bin/activate; ${VIRTUALENV}/bin/python ./st2actions/bin/st2workflowengine --config-file $ST2_CONF 2>&1 | tee -a ${ST2_LOGS}/${WORKFLOW_ENGINE_NAME}.log"
     done
 
-    # Start a screen for every runner
-    echo 'Starting screen sessions for st2-actionrunner(s)'
-    RUNNER_SCREENS=()
+    # Start a session for every runner
+    echo 'Starting st2-actionrunner(s):'
+    RUNNER_SESSIONS=()
     for i in $(seq 1 $runner_count)
     do
         RUNNER_NAME=st2-actionrunner-$i
-        RUNNER_SCREENS+=($RUNNER_NAME)
-        echo '  starting '$RUNNER_NAME'...'
-        screen -L -c tools/screen-configs/st2actionrunner.conf -d -m -S $RUNNER_NAME ${VIRTUALENV}/bin/python \
-            ./st2actions/bin/st2actionrunner \
-            --config-file $ST2_CONF
+        RUNNER_SESSIONS+=($RUNNER_NAME)
+        echo "   $RUNNER_NAME ..."
+        tmux new-session -d -s $RUNNER_NAME "export ST2_CONFIG_PATH=${ST2_CONF}; source ${VIRTUALENV}/bin/activate; ${VIRTUALENV}/bin/python ./st2actions/bin/st2actionrunner --config-file $ST2_CONF 2>&1 | tee -a ${ST2_LOGS}/${RUNNER_NAME}.log"
     done
 
     # Run the garbage collector service
-    echo 'Starting screen session st2-garbagecollector'
-    screen -L -c tools/screen-configs/st2garbagecollector.conf -d -m -S st2-garbagecollector ${VIRTUALENV}/bin/python \
-        ./st2reactor/bin/st2garbagecollector \
-        --config-file $ST2_CONF
+    echo 'Starting st2-garbagecollector ...'
+    tmux new-session -d -s st2-garbagecollector "export ST2_CONFIG_PATH=${ST2_CONF}; source ${VIRTUALENV}/bin/activate; ${VIRTUALENV}/bin/python ./st2reactor/bin/st2garbagecollector --config-file $ST2_CONF 2>&1 | tee -a ${ST2_LOGS}/st2-garbagecollector.log"
 
     # Run the scheduler server
-    echo 'Starting screen session st2-scheduler(s)'
-    SCHEDULER_SCREENS=()
+    echo 'Starting st2-scheduler(s):'
+    SCHEDULER_SESSIONS=()
     for i in $(seq 1 $scheduler_count)
     do
         SCHEDULER_NAME=st2-scheduler-$i
-        SCHEDULER_SCREENS+=($SCHEDULER_NAME)
-        echo '  starting '$SCHEDULER_NAME'...'
-        screen -L -c tools/screen-configs/st2scheduler.conf -d -m -S $SCHEDULER_NAME ${VIRTUALENV}/bin/python \
-            ./st2actions/bin/st2scheduler \
-            --config-file $ST2_CONF
+        SCHEDULER_SESSIONS+=($SCHEDULER_NAME)
+        echo "   $SCHEDULER_NAME ..."
+        tmux new-session -d -s $SCHEDULER_NAME "export ST2_CONFIG_PATH=${ST2_CONF}; source ${VIRTUALENV}/bin/activate; ${VIRTUALENV}/bin/python ./st2actions/bin/st2scheduler --config-file $ST2_CONF 2>&1 | tee -a ${ST2_LOGS}/${SCHEDULER_NAME}.log"
     done
 
     # Run the sensor container server
-    echo 'Starting screen session st2-sensorcontainer'
-    screen -L -c tools/screen-configs/st2sensorcontainer.conf -d -m -S st2-sensorcontainer ${VIRTUALENV}/bin/python \
-        ./st2reactor/bin/st2sensorcontainer \
-        --config-file $ST2_CONF
+    echo 'Starting st2-sensorcontainer ...'
+    tmux new-session -d -s st2-sensorcontainer "export ST2_CONFIG_PATH=${ST2_CONF}; source ${VIRTUALENV}/bin/activate; ${VIRTUALENV}/bin/python ./st2reactor/bin/st2sensorcontainer --config-file $ST2_CONF 2>&1 | tee -a ${ST2_LOGS}/st2-sensorcontainer.log"
 
     # Run the rules engine server
-    echo 'Starting screen session st2-rulesengine...'
-    screen -L -c tools/screen-configs/st2rulesengine.conf -d -m -S st2-rulesengine ${VIRTUALENV}/bin/python \
-        ./st2reactor/bin/st2rulesengine \
-        --config-file $ST2_CONF
+    echo 'Starting st2-rulesengine ...'
+    tmux new-session -d -s st2-rulesengine "export ST2_CONFIG_PATH=${ST2_CONF}; source ${VIRTUALENV}/bin/activate; ${VIRTUALENV}/bin/python ./st2reactor/bin/st2rulesengine --config-file $ST2_CONF 2>&1 | tee -a ${ST2_LOGS}/st2-rulesengine.log"
 
     # Run the timer engine server
-    echo 'Starting screen session st2-timersengine...'
-    screen -L -c tools/screen-configs/st2timersengine.conf -d -m -S st2-timersengine ${VIRTUALENV}/bin/python \
-        ./st2reactor/bin/st2timersengine \
-        --config-file $ST2_CONF
+    echo 'Starting st2-timersengine ...'
+    tmux new-session -d -s st2-timersengine "export ST2_CONFIG_PATH=${ST2_CONF}; source ${VIRTUALENV}/bin/activate; ${VIRTUALENV}/bin/python ./st2reactor/bin/st2timersengine --config-file $ST2_CONF 2>&1 | tee -a ${ST2_LOGS}/st2-timersengine.log"
 
     # Run the actions notifier
-    echo 'Starting screen session st2-notifier...'
-    screen -L -c tools/screen-configs/st2notifier.conf -d -m -S st2-notifier ${VIRTUALENV}/bin/python \
-        ./st2actions/bin/st2notifier \
-        --config-file $ST2_CONF
+    echo 'Starting st2-notifier ...'
+    tmux new-session -d -s st2-notifier "export ST2_CONFIG_PATH=${ST2_CONF}; source ${VIRTUALENV}/bin/activate; ${VIRTUALENV}/bin/python ./st2actions/bin/st2notifier --config-file $ST2_CONF 2>&1 | tee -a ${ST2_LOGS}/st2-notifier.log"
 
     # Run the auth API server
-    echo 'Starting screen session st2-auth...'
     if [ "${use_gunicorn}" = true ]; then
-        echo '  using gunicorn to run st2-auth...'
+        echo 'Starting st2-auth using gunicorn ...'
         export ST2_CONFIG_PATH=${ST2_CONF}
-        screen -L -c tools/screen-configs/st2auth.conf -d -m -S st2-auth ${VIRTUALENV}/bin/gunicorn \
-            st2auth.wsgi:application -k eventlet -b "$BINDING_ADDRESS:9100" --workers 1
+        tmux new-session -d -s st2-auth "export ST2_CONFIG_PATH=${ST2_CONF}; source ${VIRTUALENV}/bin/activate; ${VIRTUALENV}/bin/gunicorn st2auth.wsgi:application -k eventlet -b $BINDING_ADDRESS:9100 --workers 1 2>&1 | tee -a ${ST2_LOGS}/st2-auth.log"
     else
-        screen -L -c tools/screen-configs/st2auth.conf -d -m -S st2-auth ${VIRTUALENV}/bin/python \
-            ./st2auth/bin/st2auth \
-            --config-file $ST2_CONF
+        echo 'Starting st2-auth ...'
+        tmux new-session -d -s st2-auth "export ST2_CONFIG_PATH=${ST2_CONF}; source ${VIRTUALENV}/bin/activate; ${VIRTUALENV}/bin/python ./st2auth/bin/st2auth --config-file $ST2_CONF 2>&1 | tee -a ${ST2_LOGS}/st2-auth.log"
     fi
 
-    # Check whether screen sessions are started
-    SCREENS=(
+    # Check whether tmux sessions are started
+    SESSIONS=(
         "st2-api"
-        "${WORKFLOW_ENGINE_SCREENS[@]}"
-        "${SCHEDULER_SCREENS[@]}"
-        "${RUNNER_SCREENS[@]}"
+        "${WORKFLOW_ENGINE_SESSIONS[@]}"
+        "${SCHEDULER_SESSIONS[@]}"
+        "${RUNNER_SESSIONS[@]}"
         "st2-sensorcontainer"
         "st2-rulesengine"
         "st2-notifier"
@@ -303,45 +326,44 @@ function st2start(){
     )
 
     echo
-    for s in "${SCREENS[@]}"
+    for s in "${SESSIONS[@]}"
     do
-        screen -ls | grep "${s}[[:space:]]" &> /dev/null
+        tmux ls | grep "^${s}[[:space:]]" &> /dev/null
         if [ $? != 0 ]; then
-            echo "ERROR: Unable to start screen session for $s."
+            eecho "ERROR: terminal multiplex session for $s failed to start."
         fi
     done
 
     if [ "$load_content" = true ]; then
         # Register contents
-        echo 'Registering sensors, runners, actions, rules, aliases, and policies...'
-        ${VIRTUALENV}/bin/python \
-            ./st2common/bin/st2-register-content \
-            --config-file $ST2_CONF --register-all
+        echo 'Registering sensors, runners, actions, rules, aliases, and policies ...'
+        ${VIRTUALENV}/bin/python ./st2common/bin/st2-register-content --config-file $ST2_CONF --register-all
     fi
 
     if [ "$copy_test_packs" = true ]; then
         st2 run packs.setup_virtualenv packs=fixtures
         if [ $? != 0 ]; then
-            echo "Warning: Unable to setup virtualenv for the \"tests\" pack. Please setup virtualenv for the \"tests\" pack before running integration tests"
+            wecho "WARNING: Unable to setup virtualenv for the \"tests\" pack. Please setup virtualenv for the \"tests\" pack before running integration tests"
         fi
     fi
 
-    # Print default creds to the screen
-    echo "The default creds are testu:testp"
+    # Display default credentials to the multiplexor session
+    echo "The default credentials are testu:testp"
 
-    # List screen sessions
-    screen -ls || exit 0
+    # List sessions
+    tmux ls || exit 0
 }
 
-function st2stop(){
-    screen -ls | grep st2 &> /dev/null
-    if [ $? == 0 ]; then
-        echo 'Killing existing st2 screen sessions...'
-        screen -ls | grep st2 | cut -d. -f1 | awk '{print $1}' | xargs -L 1 pkill -P
-    fi
+function st2stop()
+{
+    for tmux_session in $(tmux ls | awk -F: '/^st2-/ {print $1}')
+    do
+        echo "Kill existing session $tmux_session"
+        tmux kill-session -t $tmux_session
+    done
 
     if [ "${use_gunicorn}" = true ]; then
-        pids=`ps -ef | grep "wsgi:application" | grep -v "grep" | awk '{print $2}'`
+        pids=$(ps -ef | grep "wsgi:application" | grep -v "grep" | awk '{print $2}')
         if [ -n "$pids" ]; then
             echo "Killing gunicorn processes"
             # true ensures that any failure to kill a process which does not exist will not lead
@@ -354,7 +376,8 @@ function st2stop(){
     fi
 }
 
-function st2clean(){
+function st2clean()
+{
     # clean mongo
     . ${VIRTUALENV}/bin/activate
     python ${ST2_REPO}/st2common/bin/st2-cleanup-db --config-file $ST2_CONF
@@ -367,33 +390,32 @@ function st2clean(){
     fi
     if [ -n "$ST2_EXPORTER" ]; then
         EXPORTS_DIR=$(exportsdir)
-        echo "Removing $EXPORTS_DIR..."
+        echo "Removing $EXPORTS_DIR ..."
         rm -rf ${EXPORTS_DIR}
     fi
-
 }
 
 
 case ${subcommand} in
-start)
-    init
-    st2start
-    ;;
-startclean)
-    init
-    st2clean
-    st2start
-    ;;
-stop)
-    st2stop
-    ;;
-restart)
-    st2stop
-    sleep 1
-    init
-    st2start
-    ;;
-*)
-    usage
-    ;;
+    start)
+        init
+        st2start
+        ;;
+    startclean)
+        init
+        st2clean
+        st2start
+        ;;
+    stop)
+        st2stop
+        ;;
+    restart)
+        st2stop
+        sleep 1
+        init
+        st2start
+        ;;
+    *)
+        usage
+        ;;
 esac
diff --git a/tools/screen-configs/st2actionrunner.conf b/tools/screen-configs/st2actionrunner.conf
deleted file mode 100644
index c7c8d900a1..0000000000
--- a/tools/screen-configs/st2actionrunner.conf
+++ /dev/null
@@ -1,6 +0,0 @@
-logfile logs/screen-st2actionrunner.log
-logfile flush 1
-log on
-logtstamp after 1
-logtstamp string \"[ %t: %Y-%m-%d %c:%s ]\012\"
-logtstamp on
diff --git a/tools/screen-configs/st2api.conf b/tools/screen-configs/st2api.conf
deleted file mode 100644
index 834313114b..0000000000
--- a/tools/screen-configs/st2api.conf
+++ /dev/null
@@ -1,6 +0,0 @@
-logfile logs/screen-st2api.log
-logfile flush 1
-log on
-logtstamp after 1
-logtstamp string \"[ %t: %Y-%m-%d %c:%s ]\012\"
-logtstamp on
diff --git a/tools/screen-configs/st2auth.conf b/tools/screen-configs/st2auth.conf
deleted file mode 100644
index 0bff41afcb..0000000000
--- a/tools/screen-configs/st2auth.conf
+++ /dev/null
@@ -1,6 +0,0 @@
-logfile logs/screen-st2auth.log
-logfile flush 1
-log on
-logtstamp after 1
-logtstamp string \"[ %t: %Y-%m-%d %c:%s ]\012\"
-logtstamp on
diff --git a/tools/screen-configs/st2garbagecollector.conf b/tools/screen-configs/st2garbagecollector.conf
deleted file mode 100644
index dddb0f68f4..0000000000
--- a/tools/screen-configs/st2garbagecollector.conf
+++ /dev/null
@@ -1,6 +0,0 @@
-logfile logs/screen-st2garbagecollector.log
-logfile flush 1
-log on
-logtstamp after 1
-logtstamp string \"[ %t: %Y-%m-%d %c:%s ]\012\"
-logtstamp on
diff --git a/tools/screen-configs/st2notifier.conf b/tools/screen-configs/st2notifier.conf
deleted file mode 100644
index 104d873a39..0000000000
--- a/tools/screen-configs/st2notifier.conf
+++ /dev/null
@@ -1,6 +0,0 @@
-logfile logs/screen-st2notifier.log
-logfile flush 1
-log on
-logtstamp after 1
-logtstamp string \"[ %t: %Y-%m-%d %c:%s ]\012\"
-logtstamp on
diff --git a/tools/screen-configs/st2rulesengine.conf b/tools/screen-configs/st2rulesengine.conf
deleted file mode 100644
index 1fca4d9807..0000000000
--- a/tools/screen-configs/st2rulesengine.conf
+++ /dev/null
@@ -1,6 +0,0 @@
-logfile logs/screen-st2rulesengine.log
-logfile flush 1
-log on
-logtstamp after 1
-logtstamp string \"[ %t: %Y-%m-%d %c:%s ]\012\"
-logtstamp on
diff --git a/tools/screen-configs/st2scheduler.conf b/tools/screen-configs/st2scheduler.conf
deleted file mode 100644
index 1bbcbd81f6..0000000000
--- a/tools/screen-configs/st2scheduler.conf
+++ /dev/null
@@ -1,6 +0,0 @@
-logfile logs/screen-st2scheduler.log
-logfile flush 1
-log on
-logtstamp after 1
-logtstamp string \"[ %t: %Y-%m-%d %c:%s ]\012\"
-logtstamp on
diff --git a/tools/screen-configs/st2sensorcontainer.conf b/tools/screen-configs/st2sensorcontainer.conf
deleted file mode 100644
index 735550d07b..0000000000
--- a/tools/screen-configs/st2sensorcontainer.conf
+++ /dev/null
@@ -1,6 +0,0 @@
-logfile logs/screen-st2sensorcontainer.log
-logfile flush 1
-log on
-logtstamp after 1
-logtstamp string \"[ %t: %Y-%m-%d %c:%s ]\012\"
-logtstamp on
diff --git a/tools/screen-configs/st2stream.conf b/tools/screen-configs/st2stream.conf
deleted file mode 100644
index e6c6b8c09e..0000000000
--- a/tools/screen-configs/st2stream.conf
+++ /dev/null
@@ -1,6 +0,0 @@
-logfile logs/screen-st2stream.log
-logfile flush 1
-log on
-logtstamp after 1
-logtstamp string \"[ %t: %Y-%m-%d %c:%s ]\012\"
-logtstamp on
diff --git a/tools/screen-configs/st2timersengine.conf b/tools/screen-configs/st2timersengine.conf
deleted file mode 100644
index 5d358d8fec..0000000000
--- a/tools/screen-configs/st2timersengine.conf
+++ /dev/null
@@ -1,6 +0,0 @@
-logfile logs/screen-st2timersengine.log
-logfile flush 1
-log on
-logtstamp after 1
-logtstamp string \"[ %t: %Y-%m-%d %c:%s ]\012\"
-logtstamp on
diff --git a/tools/screen-configs/st2workflowengine.conf b/tools/screen-configs/st2workflowengine.conf
deleted file mode 100644
index 28d110e29c..0000000000
--- a/tools/screen-configs/st2workflowengine.conf
+++ /dev/null
@@ -1,6 +0,0 @@
-logfile logs/screen-st2workflowengine.log
-logfile flush 1
-log on
-logtstamp after 1
-logtstamp string \"[ %t: %Y-%m-%d %c:%s ]\012\"
-logtstamp on