diff --git a/macos/tools/qet_netlist.py b/macos/tools/qet_netlist.py
new file mode 100755
index 000000000..049ddcd43
--- /dev/null
+++ b/macos/tools/qet_netlist.py
@@ -0,0 +1,36 @@
+#!/usr/bin/env python3
+"""qet_netlist — liste des connexions (netlist) depuis un .qet.
+Pour chaque conducteur : folio, num, de (élément/borne) -> vers (élément/borne), couleur, section.
+Usage: python3 qet_netlist.py projet.qet [--csv sortie.csv]"""
+import sys, os, csv, argparse
+import xml.etree.ElementTree as ET
+
+def bn(t): return os.path.splitext(os.path.basename((t or '').replace('\\','/')))[0]
+
+def main():
+    ap=argparse.ArgumentParser(); ap.add_argument("qet"); ap.add_argument("--csv")
+    a=ap.parse_args(); root=ET.parse(a.qet).getroot()
+    rows=[]
+    for i,d in enumerate(root.findall("diagram"),1):
+        # index élément par uuid -> repère/type
+        elem={}
+        for e in d.findall(".//element"):
+            lab=""
+            for ei in e.findall(".//elementInformation"):
+                if ei.attrib.get("name")=="label" and (ei.text or "").strip(): lab=ei.text.strip()
+            elem[e.attrib.get("uuid")]= lab or bn(e.attrib.get("type"))
+        for c in d.findall(".//conductor"):
+            ca=c.attrib
+            rows.append({"folio":i,"num":ca.get("num",""),
+                         "borne1":ca.get("terminal1",""),"borne2":ca.get("terminal2",""),
+                         "couleur":ca.get("conductor_color",""),"section":ca.get("conductor_section",""),
+                         "fonction":ca.get("function",""),"câble":ca.get("cable",""),"type":ca.get("type","")})
+    cols=["folio","num","borne1","borne2","couleur","section","fonction","câble","type"]
+    print(f"# Netlist — {os.path.basename(a.qet)} ({len(rows)} connexions)\n")
+    print("| "+" | ".join(cols)+" |"); print("| "+" | ".join("---" for _ in cols)+" |")
+    for r in rows: print("| "+" | ".join(str(r.get(k,"")) for k in cols)+" |")
+    if a.csv:
+        with open(a.csv,"w",newline="",encoding="utf-8") as f:
+            w=csv.DictWriter(f,fieldnames=cols); w.writeheader(); w.writerows(rows)
+        print(f"\nCSV: {a.csv}", file=sys.stderr)
+if __name__=="__main__": main()
diff --git a/macos/tools/qet_parts.py b/macos/tools/qet_parts.py
new file mode 100755
index 000000000..070cde55e
--- /dev/null
+++ b/macos/tools/qet_parts.py
@@ -0,0 +1,43 @@
+#!/usr/bin/env python3
+"""qet_parts — BOM chiffrée par jointure .qet × catalogue d'articles (style EPLAN parts).
+Lecture seule : associe chaque appareil (par repère ou type) à une ligne catalogue CSV
+(colonnes: cle, designation, fabricant, reference, prix). Sort une BOM chiffrée MD/CSV.
+Usage : python3 qet_parts.py projet.qet --catalog articles.csv [--by label|type] [--csv out.csv]"""
+import os, csv, argparse, collections
+import xml.etree.ElementTree as ET
+def bn(t): return os.path.splitext(os.path.basename((t or '').replace('\\','/')))[0]
+def lab(e):
+    for ei in e.findall(".//elementInformation"):
+        if ei.attrib.get("name")=="label" and (ei.text or "").strip(): return ei.text.strip()
+    return ""
+def main():
+    ap=argparse.ArgumentParser(); ap.add_argument("qet"); ap.add_argument("--catalog",required=True)
+    ap.add_argument("--by",choices=["label","type"],default="type"); ap.add_argument("--csv")
+    a=ap.parse_args()
+    cat={}
+    with open(a.catalog,encoding="utf-8") as f:
+        for row in csv.DictReader(f): cat[(row.get("cle") or "").strip()]=row
+    root=ET.parse(a.qet).getroot()
+    IGNORE=("folio","renvoi","nomenclatur","spec_cablage","cartouche")
+    keycount=collections.Counter()
+    for e in root.findall(".//element"):
+        t=bn(e.attrib.get("type"))
+        if any(k in t.lower() for k in IGNORE): continue
+        key = lab(e) if a.by=="label" else t
+        if key: keycount[key]+=1
+    rows=[]; total=0.0
+    for key,qte in keycount.most_common():
+        c=cat.get(key,{})
+        prix=float(c.get("prix","0") or 0); sous=prix*qte; total+=sous
+        rows.append({"clé":key,"qté":qte,"désignation":c.get("designation",""),
+                     "fabricant":c.get("fabricant",""),"référence":c.get("reference",""),
+                     "PU":f"{prix:.2f}","total":f"{sous:.2f}"})
+    cols=["clé","qté","désignation","fabricant","référence","PU","total"]
+    print(f"# BOM chiffrée — {os.path.basename(a.qet)} (jointure sur {a.by})\n")
+    print("| "+" | ".join(cols)+" |"); print("| "+" | ".join("---" for _ in cols)+" |")
+    for r in rows: print("| "+" | ".join(str(r[k]) for k in cols)+" |")
+    print(f"\n**Total estimé : {total:.2f} €**")
+    if a.csv:
+        with open(a.csv,"w",newline="",encoding="utf-8") as f:
+            w=csv.DictWriter(f,fieldnames=cols); w.writeheader(); w.writerows(rows)
+if __name__=="__main__": main()
diff --git a/macos/tools/qet_terminals_io.py b/macos/tools/qet_terminals_io.py
new file mode 100755
index 000000000..3e32d355d
--- /dev/null
+++ b/macos/tools/qet_terminals_io.py
@@ -0,0 +1,29 @@
+#!/usr/bin/env python3
+"""qet_terminals_io — plan de bornier + liste d'E/S API depuis un .qet.
+Détecte les borniers (terminal_strip) et les éléments d'API (type contenant 'plc'/'automate'/'io').
+Usage: python3 qet_terminals_io.py projet.qet"""
+import os, argparse
+import xml.etree.ElementTree as ET
+def bn(t): return os.path.splitext(os.path.basename((t or '').replace('\\','/')))[0]
+def lab(e):
+    for ei in e.findall(".//elementInformation"):
+        if ei.attrib.get("name")=="label" and (ei.text or "").strip(): return ei.text.strip()
+    return ""
+def main():
+    ap=argparse.ArgumentParser(); ap.add_argument("qet"); a=ap.parse_args()
+    root=ET.parse(a.qet).getroot()
+    strips=root.findall(".//terminal_strip")+root.findall(".//terminalstrip")
+    terms=[e for e in root.findall(".//element") if "born" in bn(e.attrib.get("type")).lower() or "terminal" in bn(e.attrib.get("type")).lower()]
+    ios=[e for e in root.findall(".//element") if any(k in bn(e.attrib.get("type")).lower() for k in ("plc","automate","_io","entree","sortie","input","output"))]
+    print(f"# Bornier & E/S API — {os.path.basename(a.qet)}\n")
+    print(f"## Borniers\n\n- terminal_strip déclarés : {len(strips)}\n- éléments bornes détectés : {len(terms)}\n")
+    if terms:
+        print("| folio? | repère | type |"); print("| --- | --- | --- |")
+        for e in terms[:200]: print(f"| - | {lab(e)} | {bn(e.attrib.get('type'))} |")
+    print(f"\n## Entrées/Sorties API\n\n- éléments E/S détectés : {len(ios)}\n")
+    if ios:
+        print("| repère | type |"); print("| --- | --- |")
+        for e in ios[:200]: print(f"| {lab(e)} | {bn(e.attrib.get('type'))} |")
+    else:
+        print("_(aucun élément API détecté dans ce projet)_")
+if __name__=="__main__": main()
diff --git a/macos/tools/qet_wire_number.py b/macos/tools/qet_wire_number.py
new file mode 100755
index 000000000..324d158b1
--- /dev/null
+++ b/macos/tools/qet_wire_number.py
@@ -0,0 +1,46 @@
+#!/usr/bin/env python3
+"""qet_wire_number — numérotation automatique des conducteurs d'un .qet (style SEE/EPLAN).
+Attribue un numéro aux conducteurs sans numéro. Préserve le format (édition ciblée) + sauvegarde .bak.
+Schémas : --scheme global (1,2,3...) ou folio (F1-1, F1-2...). --force renumérote tout.
+Usage : python3 qet_wire_number.py projet.qet [--scheme folio|global] [--force] [--prefix N]"""
+import re, sys, os, argparse, shutil
+import xml.etree.ElementTree as ET
+
+def main():
+    ap=argparse.ArgumentParser(); ap.add_argument("qet")
+    ap.add_argument("--scheme",choices=["global","folio"],default="folio")
+    ap.add_argument("--force",action="store_true"); ap.add_argument("--prefix",default="")
+    a=ap.parse_args()
+    txt=open(a.qet,encoding="utf-8").read()
+    # bornes de folios (offsets des <diagram )
+    dia_pos=[m.start() for m in re.finditer(r'<diagram\b', txt)]
+    def folio_of(pos):
+        f=0
+        for p in dia_pos:
+            if p<=pos: f+=1
+            else: break
+        return max(f,1)
+    counters={}; gcount=0; changed=0
+    def repl(m):
+        nonlocal gcount,changed
+        tag=m.group(0); pos=m.start()
+        cur=re.search(r'\bnum="([^"]*)"',tag)
+        has=cur and cur.group(1).strip()
+        if has and not a.force: return tag
+        f=folio_of(pos)
+        if a.scheme=="folio":
+            counters[f]=counters.get(f,0)+1; val=f"{a.prefix}F{f}-{counters[f]}"
+        else:
+            gcount+=1; val=f"{a.prefix}{gcount}"
+        changed+=1
+        if cur: return tag[:cur.start()]+f'num="{val}"'+tag[cur.end():]
+        return tag[:-1]+f' num="{val}">'
+    new=re.sub(r'<conductor\b[^>]*>', repl, txt)
+    # validation : XML bien formé
+    try: ET.fromstring(new)
+    except ET.ParseError as e:
+        print("ERREUR: XML invalide après édition, abandon:",e); sys.exit(1)
+    shutil.copyfile(a.qet, a.qet+".bak")
+    open(a.qet,"w",encoding="utf-8").write(new)
+    print(f"OK : {changed} conducteurs numérotés (schéma {a.scheme}). Sauvegarde : {os.path.basename(a.qet)}.bak")
+if __name__=="__main__": main()