diff --git a/build-scripts/monitoring/open_ports.sh b/build-scripts/monitoring/open_ports.sh
deleted file mode 100755
index 47241c88d7c..00000000000
--- a/build-scripts/monitoring/open_ports.sh
+++ /dev/null
@@ -1,84 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2019 Digital Asset (Switzerland) GmbH and/or its affiliates. All rights reserved.
-# SPDX-License-Identifier: Apache-2.0
-
-
-set -u
-
-# options
-PORT_RANGES=${PORT_RANGES:-"8000:8100 9000:9100 20000:20100 6865:6866"}
-SHOULD_FAIL_BUILD=${SHOULD_FAIL_BUILD:-true}
-SHOULD_KILL_PROCESSES=${SHOULD_KILL_PROCESSES:-false}
-
-# internal global variables
-PROCESS_DETECTED=false
-
-function scan_ports()
-{
-  local port_range=$1
-  local start_port=${port_range%%:*}
-  local end_port=${port_range##*:}
-  local sleep_before_reporting_process=10
-
-  echo -e "\nStarting scanning port range $start_port:$end_port ... \n"
-
-  for port in $(seq $start_port $end_port); do
-    pid=$(lsof -stcp:LISTEN -t -i :$port)
-    if [[ $? -eq 0 ]]; then
-      echo "process $pid detected on port $port, waiting for $sleep_before_reporting_process seconds ... "
-      sleep $sleep_before_reporting_process
-      pid=$(lsof -stcp:LISTEN -t -i :$port)
-      if [[ $? -eq 0 ]]; then
-        echo "process $pid still running and will be reported ..."
-        PROCESS_DETECTED=true
-        ps -wwfp $pid
-        if [[ $SHOULD_KILL_PROCESSES == true ]]; then
-          echo -e "\nKilling process $pid\n"
-          kill -9 $pid
-          pid=$(lsof -stcp:LISTEN -t -i :$port)
-          if [[ $? -eq 0 ]]; then
-            echo -e "\nCouldnt kill the process $pid with kill -9 \n"
-          else
-            echo -e "\n Able to force kill process $pid with kill -9 \n"
-            PROCESS_DETECTED=false
-          fi
-        fi
-      fi
-    fi
-  done
-}
-
-### MAIN
-
-echo "
-Checking for open ports (tcp:LISTENING)
-
-This is useful to invoke as a diagnostic tool before running
-processes expecting fixed ports to be available.
-
-Using the following options:
-
-- PORT_RANGES=${PORT_RANGES}
-- SHOULD_FAIL_BUILD=${SHOULD_FAIL_BUILD}
-- SHOULD_KILL_PROCESSES=${SHOULD_KILL_PROCESSES}
-
-You can override the values by using environment variables.
-
-You can specify multiple port ranges, separated by space ' '
-e.g. PORT_RANGES=\"8000:8100 8200:8300\"
-"
-
-for port_range in $PORT_RANGES; do
-  scan_ports $port_range
-done
-
-if [[ $PROCESS_DETECTED == true ]]; then
-  if [[ $SHOULD_FAIL_BUILD == true ]]; then
-    echo -e "\n\nWill fail build as hanging processes have been detected"
-    exit 1
-  fi
-else
-  echo -e "\n\nNo processes have been detected on $PORT_RANGES port range"
-fi
-
-exit 0
diff --git a/dev-env/bin/dade-collect-garbage b/dev-env/bin/dade-collect-garbage
index ec03e62b8e7..30c37dabf61 100755
--- a/dev-env/bin/dade-collect-garbage
+++ b/dev-env/bin/dade-collect-garbage
@@ -1,5 +1,4 @@
 #!/usr/bin/env bash
 DADE_CURRENT_SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 source "$DADE_CURRENT_SCRIPT_DIR/../lib/dade-common"
-buildTool lsof out 0
 nix-store --gc
diff --git a/dev-env/bin/jq b/dev-env/bin/jq
index 943ba2d88c9..bd1b1819b20 120000
--- a/dev-env/bin/jq
+++ b/dev-env/bin/jq
@@ -1 +1 @@
-../lib/dade-exec-nix-tool
\ No newline at end of file
+../lib/dade-exec-nix-bin-tool
\ No newline at end of file
diff --git a/dev-env/bin/nix-prefetch-git-hydra b/dev-env/bin/nix-prefetch-git-hydra
deleted file mode 100755
index 78b8fd03034..00000000000
--- a/dev-env/bin/nix-prefetch-git-hydra
+++ /dev/null
@@ -1,4 +0,0 @@
-#!/usr/bin/env sh
-# Perform git checkout like hydra does
-export NIX_PREFETCH_GIT_CHECKOUT_HOOK="find \"\$dir\" -type f -name .gitignore -exec rm {} \;"
-nix-prefetch-git "$@"
diff --git a/ledger/scripts/test/sandbox-startup.sh b/ledger/scripts/test/sandbox-startup.sh
deleted file mode 100755
index 0a55758862a..00000000000
--- a/ledger/scripts/test/sandbox-startup.sh
+++ /dev/null
@@ -1,84 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2019 Digital Asset (Switzerland) GmbH and/or its affiliates. All rights reserved.
-# SPDX-License-Identifier: Apache-2.0
-
-set -euxo pipefail
-
-#Run this from the ledger dir
-
-PATH="${PATH}:/usr/sbin" #lsof is not on the PATH by default
-
-WORKING_DIR=$(pwd)
-PORT=6865
-
-function get_pid_listening_on_port () {
-  echo $(lsof -i:${PORT} -t)
-}
-
-function cleanup() {
-  PID=$(get_pid_listening_on_port) || "" #Handling error from lsof if there is no such process
-  if [ -z ${PID} ]
-  then
-        exit 0
-  else
-        kill ${PID}
-  fi
-}
-trap cleanup EXIT
-
-function wait_for_unbind () {
-  while nc -z 127.0.0.1 $1; do
-    sleep 0.1
-  done
-}
-
-function wait_for_bind () {
-  while ! nc -z 127.0.0.1 $1; do
-    sleep 0.1
-  done
-}
-
-function getTime () {
-  TIME_NANOS=$(date +%s%N | sed -E "s/^([0-9]+)N$/\1000000000/g")
-  echo $((${TIME_NANOS}/1000000))
-}
-
-function run_startup_benchmark () {
-  JAR_FILE=$1
-  PORT=$2
-  START=$(getTime)
-  java -jar ${JAR_FILE} -p ${PORT} --dalf bond-trading.dalf > "sandbox_output.txt" &
-  PID=$!
-  wait_for_bind ${PORT}
-  END=$(getTime)
-  kill ${PID}
-  wait_for_unbind ${PORT}
-  let "DIFF = ${END} - ${START}"
-  echo ${DIFF}
-}
-
-#Run this from the ledger dir
-find sandbox -name "sandbox*.tgz" -exec tar -zxf {} +;
-TAR_DIR=$(find . -type d -name "sandbox-*-*")
-DAMLI_JAR_FILE=$(find ${TAR_DIR} -name "damli-*-*.jar" -maxdepth 2)
-java -jar ${DAMLI_JAR_FILE} export-lf-v1 "../reference-apps/bond-trading/daml/LibraryModules.daml" -o "${TAR_DIR}/bond-trading.dalf"
-pushd ${TAR_DIR}
-JAR_FILE=$(find . -name "sandbox-*-*.jar" -maxdepth 1)
-RESULT_FILE_NAME="StartupBenchmark.xml"
-RESULT_FILE="${WORKING_DIR}/${RESULT_FILE_NAME}"
-echo "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?>" > ${RESULT_FILE}
-echo "<testResults>" >> ${RESULT_FILE}
-for i in {1..5}
-do
-  RESULT_MS=$(run_startup_benchmark "${JAR_FILE}" "${PORT}")
-  TIME_MS=$(getTime)
-  echo "<sample lb=\"Sandbox.Startup\" lt=\"0\" rc=\"200\" rm=\"OK\" s=\"true\" t=\"${RESULT_MS}\" tn=\"-\" ts=\"${TIME_MS}\"/>" >> ${RESULT_FILE}
-done
-popd
-echo "</testResults>" >> ${RESULT_FILE}
-rm -rf ${TAR_DIR}
-TARGET_DIR="sandbox-perf/target/benchmarks/jmeter"
-mkdir -p ${TARGET_DIR}
-mv ${RESULT_FILE} ${TARGET_DIR}
-cat "${TARGET_DIR}/${RESULT_FILE_NAME}"
-
diff --git a/navigator/integration-test/test-local-navigator.sh b/navigator/integration-test/test-local-navigator.sh
deleted file mode 100755
index 7a0788f6a76..00000000000
--- a/navigator/integration-test/test-local-navigator.sh
+++ /dev/null
@@ -1,57 +0,0 @@
-#!/usr/bin/env bash
-# Copyright (c) 2019 Digital Asset (Switzerland) GmbH and/or its affiliates. All rights reserved.
-# SPDX-License-Identifier: Apache-2.0
-
-set -u
-
-exp_num_of_params=2
-if [ "$#" -ne $exp_num_of_params ]; then
-  echo "[ERROR] Illegal number of arguments. (Expected $exp_num_of_params, got $#)"
-  echo "[HELP] $0 browserstack_user browserstack_password"
-  exit 1
-fi
-
-# browserstack user
-readonly BROWSERSTACK_CREDENTIALS_USR=$1
-
-# browserstack password
-readonly BROWSERSTACK_CREDENTIALS_PSW=$2
-
-lsof -n -i :4000 | grep LISTEN | awk '{print $2}' | xargs kill -9
-lsof -n -i :7500 | grep LISTEN | awk '{print $2}' | xargs kill -9
-lsof -n -i :8081 | grep LISTEN | awk '{print $2}' | xargs kill -9
-
-DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
-pushd $DIR
-
-
-BSUSER="--browserstack-user ${BROWSERSTACK_CREDENTIALS_USR}"
-BSKEY="--browserstack-key ${BROWSERSTACK_CREDENTIALS_PSW}"
-
-DAML_PATH="--daml-path $DIR/src/main/resources/Main.daml"
-NAV_CONF_PATH="--nav-conf-path $DIR/src/main/resources/ui-backend.conf"
-PARENTDIR="$(dirname "$DIR")"
-NAVIGATOR_DIR="--navigator-dir $PARENTDIR"
-
-
-PARAMS="$DAML_PATH $NAV_CONF_PATH $NAVIGATOR_DIR $BSUSER $BSKEY"
-
-
-TEST_COMMAND='sbt "run '${PARAMS}'"'
-
-echo ${TEST_COMMAND}
-
-echo "Running the integration tests"
-eval "${TEST_COMMAND}"
-SUCCESS=$(echo $?)
-echo "Test run finished"
-echo "Cleaning up the applications"
-
-lsof -n -i :4000 | grep LISTEN | awk '{print $2}' | xargs kill -9
-lsof -n -i :7500 | grep LISTEN | awk '{print $2}' | xargs kill -9
-lsof -n -i :8081 | grep LISTEN | awk '{print $2}' | xargs kill -9
-
-echo "Cleanup done"
-popd
-
-exit ${SUCCESS}
diff --git a/nix/packages.nix b/nix/packages.nix
index f2144e0da9d..e1c9638eee5 100644
--- a/nix/packages.nix
+++ b/nix/packages.nix
@@ -254,8 +254,6 @@ in rec {
     undmg = pkgs.undmg;
     jfrog = pkgs.callPackage ./tools/jfrog-cli {};
 
-    nix-prefetch-git = pkgs.nix-prefetch-git;
-
     # Cloud tools
     gcloud = pkgs.google-cloud-sdk;
     bq     = gcloud;