diff --git a/bin/link-development-folders b/bin/link-development-folders
new file mode 100755
index 0000000..2c05283
--- /dev/null
+++ b/bin/link-development-folders
@@ -0,0 +1,122 @@
+#!/bin/sh
+PATH_TO_LIBRARY="${HOME}/Projects";
+PATH_TO_DEVELOPER="${HOME}/Developer";
+
+check_for_folder_or_return_error() {
+    path2check="${1}";
+    if [ ! -d "${path2check}" ]; then
+        echo "Path ${path2check} is not a folder. Skipping.";
+        return 1;
+    fi
+}
+
+check_for_development_folder_or_return_error() {
+    path2check="${1}";
+    if [ "${path2check##*/}" != "Development" ]; then
+        echo "Path ${path2check} is not a Development folder. Skipping.";
+        return 2;
+    fi
+}
+
+remove_library_path_prefix() {
+    given_path="${1}";
+    path_with_library_prefix_removed="${given_path#${PATH_TO_LIBRARY}/}";
+    path_with_root_dot="${path_with_library_prefix_removed:-.}";
+    echo "${path_with_root_dot}";
+}
+
+remove_trailing_slash_in_path() {
+    given_path="${1}";
+    path_without_tailing_slash="${given_path%/}";
+    path_with_root_slash="${path_without_last_slash:-/}";
+    echo "${path_with_root_slash}";
+}
+
+remove_trailing_development_folder() {
+    given_path="${1}";
+    path_with_development_remove="${given_path%/Development}";
+    echo "${path_with_development_remove}";
+}
+
+remove_last_path_element() {
+    given_path="${1}";
+    path_without_last_element="${given_path%/*}";
+    path_with_root_slash="${path_without_last_element:-/}";
+    echo "${path_with_root_slash}";
+}
+
+remove_file_from_path() {
+    given_path="${1}";
+    [ -f "${given_path}" ] && given_path=`remove_last_path_element "${given_path}"`;
+    echo "${given_path}";
+}
+
+get_last_folder_in_path() {
+    given_path=`remove_file_from_path ${1}`;
+    tail_of_path="${given_path##*/}";
+    tail_with_root_slash="${tail_of_path:-/}";
+    echo "${tail_with_root_slash}";
+}
+
+reduce_path_to_owner_and_client() {
+    given_path="${1}";
+    relative_path=`remove_library_path_prefix "${library_path}"`;
+    owner_and_client_folder=`remove_trailing_development_folder "${relative_path}"`;
+    echo "${owner_and_client_folder}";
+}
+
+create_owner_folder_in_developer() {
+    owner="${1}";
+    development_path="${PATH_TO_DEVELOPER}/${owner}";
+
+    if [ ! -d "${development_path}" ]; then
+        echo "Creating: ${development_path}";
+        mkdir -p "${development_path}";
+    fi
+}
+
+link_folder_to_developer_as_client() {
+    folder="${1}";
+    owner="${2}";
+    client="${3}";
+
+    development_path="${PATH_TO_DEVELOPER}/${owner}";
+
+    if [ ! -L "${development_path}/${client}" ]; then
+        echo "  >Linked Development for client ${client} to owner ${development_path%/*}";
+        ln -s "${folder}" "${development_path}/${client}";
+    fi 
+}
+
+link_development_folders() {
+    library_path=`remove_trailing_slash_in_path "${1}"`;
+    check_for_folder_or_return_error "${library_path}" || exit $?;
+    check_for_development_folder_or_return_error "${library_path}" || exit $?;
+
+    owner_and_client_folder=`reduce_path_to_owner_and_client "${library_path}"`;
+    client=`get_last_folder_in_path "${owner_and_client_folder}"`;
+    owner="${owner_and_client_folder%/${client}}";
+
+    create_owner_folder_in_developer "${owner}";
+    link_folder_to_developer_as_client "${library_path}" "${owner}" "${client}";
+}
+
+find_and_link_development_folders() {
+    find "${PATH_TO_LIBRARY}" -type d -name "Development" -maxdepth 4 -print0 2> /dev/null |
+        while IFS= read -r -d '' line; do
+            link_development_folders "${line}";
+        done
+}
+
+find_and_link_executables() {
+    find "${PATH_TO_LIBRARY}" -type d -name "Development" -maxdepth 4 -print0 2> /dev/null |
+        while IFS= read -r -d '' line; do
+            link_development_folders "${line}";
+        done
+}
+
+main() {
+    find_and_link_development_folders;
+    find_and_link_executables;
+}
+
diff --git a/bin/ocr b/bin/ocr
new file mode 100755
index 0000000..8dfa437
--- /dev/null
+++ b/bin/ocr
@@ -0,0 +1,9 @@
+#!/bin/sh
+for pdf in ./*.pdf; do
+    filename="`basename "${pdf}"`";
+    path="`dirname "${pdf}"`";
+    mkdir -p OCRed;
+    printf 'OCRing %s' "${pdf}";
+    ocrmypdf -l deu "${pdf}" "${path}/OCRed/${filename}";
+    printf '...done\n';
+done
diff --git a/bin/pwdf b/bin/pwdf
new file mode 100755
index 0000000..e3de211
--- /dev/null
+++ b/bin/pwdf
@@ -0,0 +1,33 @@
+#!/usr/bin/osascript
+# Taken from https://gist.githubusercontent.com/scriptingosx/4a237fcf7b0cc473e7c175a86b6b3ecc/raw/8d5f184e4bd83dc481411a385a23a4b9bcf17c0e/pwdf
+
+on run arguments
+  tell application "Finder"
+    -- no argument: get frontmost window or desktop
+    if (count of arguments) is 0 then
+      if (count of windows) is 0 then
+       set dir to (desktop as alias)
+      else
+       set dir to ((target of Finder window 1) as alias)
+      end if
+    else
+      if first item of arguments is in {"all", "-a", "-all", "--all"} then
+       -- list all Finder windows
+       copy target of every Finder window to theList
+       repeat with w in theList
+        log POSIX path of (w as alias)
+       end repeat
+       return
+      end if
+      -- see if there is a window matching the name
+      set t to arguments as text
+      set wins to every Finder window where name contains t
+      if (count of wins) > 0 then
+       set dir to ((target of item 1 of wins) as alias)
+      else
+       return
+      end if
+    end if
+    return POSIX path of dir
+  end tell
+end run
diff --git a/bin/resolve-macos-alias b/bin/resolve-macos-alias
new file mode 100755
index 0000000..f7e3733
--- /dev/null
+++ b/bin/resolve-macos-alias
@@ -0,0 +1,28 @@
+#!/usr/bin/osascript -l JavaScript
+ObjC.import("stdlib")
+
+function showNSError(error) {
+    console.log(ObjC.unwrap(error.localizedDescription))
+}
+
+function resolveFileAlias(filePath) {
+    const aliasFile = $.NSURL.fileURLWithPathIsDirectory(filePath, false)
+    let error = $()
+    const exists = aliasFile.checkResourceIsReachableAndReturnError(error)
+    if (!exists) {
+        showNSError(error)
+        return filePath
+    }
+
+    error = $()
+    const file = $.NSURL.URLByResolvingAliasFileAtURLOptionsError(aliasFile, $.NSURLBookmarkResolutionWithoutUI, error)
+    if (file.path === aliasFile.path) showNSError(error)
+    return file.path
+}
+
+let args = $.NSProcessInfo.processInfo.arguments
+let lastIndex = args.count - 1
+var filePath = ObjC.unwrap(args.objectAtIndex(lastIndex))
+newFilePath = resolveFileAlias(filePath)
+if (newFilePath === filePath) $.exit(1)
+newFilePath
diff --git a/bin/strip-mail-attachments b/bin/strip-mail-attachments
new file mode 100755
index 0000000..2206aad
--- /dev/null
+++ b/bin/strip-mail-attachments
@@ -0,0 +1,102 @@
+#!/usr/bin/env python3
+import os
+import email
+import sys
+import re
+import hashlib
+from email.header import decode_header
+from io import BytesIO
+
+def update_sha256(sha256, stream):
+    for byte_block in iter(lambda: stream.read(4096), b""):
+        sha256.update(byte_block)
+
+def get_filename_by_sha256(sha256hash, at_path='.'):
+    with os.scandir(at_path) as it:
+        for file_or_folder in it:
+            if not file_or_folder.is_file(): continue
+            sha256 = hashlib.sha256()
+            with open(file_or_folder, "rb") as f:
+                update_sha256(sha256, f)
+            if sha256.hexdigest() == sha256hash:
+                return file_or_folder.name
+    return None
+
+ReplaceString = """
+
+This message contained an attachment that was stripped out.
+The original type was: %(content_type)s
+The filename was: %(filename)s
+It is now stored as: %(newfilename)s
+"""
+BAD_CONTENT_RE = re.compile('application/(msword|msexcel|pdf)', re.I)
+BAD_FILEEXT_RE = re.compile(r'(\.exe|\.zip|\.pif|\.scr|\.ps|\.pdf)$', re.I)
+
+def sanitise(msg):
+    # Strip out all payloads of a particular type
+    ct = msg.get_content_type()
+    # We also want to check for bad filename extensions
+    fn = msg.get_filename()
+    if decode_header(fn or '')[0][1] is not None:
+        fn = decode_header(fn)[0][0].decode(decode_header(fn)[0][1])
+    # get_filename() returns None if there's no filename
+    if BAD_CONTENT_RE.search(ct) or (fn and BAD_FILEEXT_RE.search(fn)):
+        payload = msg.get_payload(None, True)
+        newfn = 'cannot tell'
+        if isinstance(payload, bytes):
+            payload = BytesIO(payload)
+            sha256 = hashlib.sha256()
+            update_sha256(sha256, payload)
+            check_newfn = get_filename_by_sha256(sha256.hexdigest())
+            if check_newfn is not None: newfn = check_newfn
+        # Ok. This part of the message is bad, and we're going to stomp
+        # on it. First, though, we pull out the information we're about to
+        # destroy so we can tell the user about it.
+        # This returns the parameters to the content-type. The first entry
+        # is the content-type itself, which we already have.
+        params = msg.get_params()[1:]
+        # The parameters are a list of (key, value) pairs - join the
+        # key-value with '=', and the parameter list with ', '
+        params = ', '.join([ '='.join(p) for p in params ])
+        # Format up the replacement text, telling the user we ate their
+        # email attachment.
+        replace = ReplaceString % dict(content_type=ct,
+                                       filename=fn,
+                                       newfilename=newfn,
+                                       params=params)
+        # Install the text body as the new payload.
+        msg.set_payload(replace, charset='utf-8')
+        # Now we manually strip away any paramaters to the content-type
+        # header. Again, we skip the first parameter, as it's the
+        # content-type itself, and we'll stomp that next.
+        for k, v in msg.get_params()[1:]:
+            msg.del_param(k)
+        # And set the content-type appropriately.
+        msg.set_type('text/plain; charset="utf-8"')
+        # Since we've just stomped the content-type, we also kill these
+        # headers - they make no sense otherwise.
+        del msg['Content-Transfer-Encoding']
+        del msg['Content-Disposition']
+    else:
+        # Now we check for any sub-parts to the message
+        if msg.is_multipart():
+            # Call the sanitise routine on any subparts
+            payload = [ sanitise(x) for x in msg.get_payload() ]
+            # We replace the payload with our list of sanitised parts
+            msg.set_payload(payload)
+    # Return the sanitised message
+    return msg
+
+if __name__=='__main__':
+    incontent=sys.stdin.read()
+    try:
+        rootmsg=email.message_from_string(incontent)
+    except:
+        sys.stderr.write("Message could not be parsed")
+        sys.exit(1)
+    src=sanitise(rootmsg).as_string()
+
+    if src!=None:
+        sys.stdout.write(src)
+    else:
+        sys.stdout.write(incontent)
diff --git a/modules/07-install-binaries.sh b/modules/07-install-binaries.sh
new file mode 100755
index 0000000..326ebed
--- /dev/null
+++ b/modules/07-install-binaries.sh
@@ -0,0 +1,54 @@
+#!/usr/bin/env zsh
+# vi: ft=zsh
+
+function ensureRightAccess() {
+  local filesystemItem="$1"
+  chown root:admin "${filesystemItem}"
+  chmod ugo=rx "${filesystemItem}"
+}
+
+function configure_system() {
+  local dstDir='/usr/local/bin'
+  [[ -d ${dstDir} ]] || {
+    lop -- -e "Could not install binaries. Directory ${dstDir} does not exist."
+    return 10
+  }
+  pushd -q ${_DIR}/../bin
+  for file in *; do
+    indicateActivity cp,${file},${dstDir} "Copying ${file}"
+    ensureRightAccess "${dstDir}/${file}"
+  done
+  popd -q
+}
+
+function getExecPrerequisites() {
+  cmds=(
+    [cp]=''
+  )
+}
+
+function getUsage() {
+  read -r -d '' text <<- USAGE
+	Usage:
+	  $cmdName show-questions [<modkey> <modans>]...
+	  $cmdName [-v] [-d FILE]
+	
+	Install convenient binaries for all users.
+	
+	Options:
+	  -d FILE, --logfile FILE  Print log message to logfile instead of stdout.
+	  -v, --verbose            Be more verbose.
+	----
+	$cmdName 0.1.0
+	Copyright (C) 2022 Rezart Qelibari, Astzweig GmbH & Co. KG
+	License EUPL-1.2. There is NO WARRANTY, to the extent permitted by law.
+	USAGE
+  print -- ${text}
+}
+
+if [[ "${ZSH_EVAL_CONTEXT}" == toplevel ]]; then
+  _DIR="${0:A:h}"
+  test -f "${ASTZWEIG_MACOS_SYSTEM_LIB}" || { echo 'This module requires macos-system library. Please run again with macos-system library provieded as a path in ASTZWEIG_MACOS_SYSTEM_LIB env variable.'; return 10 }
+  source "${ASTZWEIG_MACOS_SYSTEM_LIB}"
+  module_main $0 "$@"
+fi