diff --git a/dev/tools/codespell/codespell-lines-ignore.txt b/dev/tools/codespell/codespell-lines-ignore.txt
index 2c0fb95a96f80..80e4f25e296dd 100644
--- a/dev/tools/codespell/codespell-lines-ignore.txt
+++ b/dev/tools/codespell/codespell-lines-ignore.txt
@@ -79,6 +79,7 @@
 			$object->periode = $dateperiod;
 			$return .= '<br><span class="opacitymedium">'.$langs->trans("Payement").'</span> : <span class="info-box-label">'.$this->type_payment.'</span>';
 			$sortfield = "datea";
+			$sql  = "SELECT p.rowid as id, p.entity, p.title, p.ref, p.public, p.dateo as do, p.datee as de, p.fk_statut as status, p.fk_opp_status, p.opp_amount, p.opp_percent, p.tms as date_update, p.budget_amount";
 			$sql .= " '".$db->escape($conf->currency)."' as currency, 0 as fk_soc, t.date_ech as date, t.periode as date_due, 'SocialContributions' as item, '' as thirdparty_name, '' as thirdparty_code, '' as country_code, '' as vatnum, ".PAY_DEBIT." as sens";
 			$sql .= " , datee = ".(!empty($obj->datee) ? "'".$this->db->escape($obj->datee)."'" : "null");
 			$sql .= " AND (".$datefieldname." <= '".$this->db->idate($datee)."' OR ".$datefieldname." IS NULL)";
@@ -325,6 +326,7 @@ $usercanread = (($user->hasRight('stock', 'mouvement', 'lire')));
 * The hook contaxt thirdpartycard has been renamed thirdpartycontact
 * The private array ->status_short, ->statuts and ->status_long are now array ->labelStatusShort and ->labelStatus everywhere.
 - New: Add proposals into referer page of thirdparty.
+NEW: ModuleBuilder: Checkin comments begin and end before each actions
 for /F "tokens=2 delims=," %%i in ('tasklist /FI "IMAGENAME eq php.exe" /FO CSV /NH') do (
 foreach ($TWeek as $week_number) {
 function checkES($IentOfi, $InumCta)
diff --git a/htdocs/core/lib/company.lib.php b/htdocs/core/lib/company.lib.php
index d8113ce135685..63f1e382fa79c 100644
--- a/htdocs/core/lib/company.lib.php
+++ b/htdocs/core/lib/company.lib.php
@@ -960,6 +960,104 @@ function show_projects($conf, $langs, $db, $object, $backtopage = '', $nocreatel
 			dol_print_error($db);
 		}
 
+		//projects linked to that thirdpart because of a people of that company is linked to a project
+		if (getDolGlobalString('PROJECT_DISPLAY_LINKED_BY_CONTACT')) {
+			print "\n";
+			print load_fiche_titre($langs->trans("ProjectsLinkedToThisThirdParty"), '', '');
+
+
+			print '<div class="div-table-responsive">'."\n";
+			print '<table class="noborder centpercent">';
+
+			$sql  = "SELECT p.rowid as id, p.entity, p.title, p.ref, p.public, p.dateo as do, p.datee as de, p.fk_statut as status, p.fk_opp_status, p.opp_amount, p.opp_percent, p.tms as date_update, p.budget_amount";
+			$sql .= ", cls.code as opp_status_code";
+			$sql .= " FROM ".MAIN_DB_PREFIX."projet as p";
+			$sql .= " LEFT JOIN ".MAIN_DB_PREFIX."c_lead_status as cls on p.fk_opp_status = cls.rowid";
+			$sql .= " LEFT JOIN ".MAIN_DB_PREFIX."element_contact as ec on p.rowid = ec.element_id";
+			$sql .= " LEFT JOIN ".MAIN_DB_PREFIX."socpeople as sc on ec.fk_socpeople = sc.rowid";
+			$sql .= " LEFT JOIN ".MAIN_DB_PREFIX."c_type_contact as tc on ec.fk_c_type_contact = tc.rowid";
+			$sql .= " WHERE sc.fk_soc = ".((int) $object->id);
+			$sql .= " AND p.entity IN (".getEntity('project').")";
+			$sql .= " AND tc.element = 'project'";
+			$sql .= " ORDER BY p.dateo DESC";
+
+			$result = $db->query($sql);
+			if ($result) {
+				$num = $db->num_rows($result);
+
+				print '<tr class="liste_titre">';
+				print '<td>'.$langs->trans("Ref").'</td>';
+				print '<td>'.$langs->trans("Name").'</td>';
+				print '<td class="center">'.$langs->trans("DateStart").'</td>';
+				print '<td class="center">'.$langs->trans("DateEnd").'</td>';
+				print '<td class="right">'.$langs->trans("OpportunityAmountShort").'</td>';
+				print '<td class="center">'.$langs->trans("OpportunityStatusShort").'</td>';
+				print '<td class="right">'.$langs->trans("OpportunityProbabilityShort").'</td>';
+				print '<td class="right">'.$langs->trans("Status").'</td>';
+				print '</tr>';
+
+				if ($num > 0) {
+					require_once DOL_DOCUMENT_ROOT.'/projet/class/project.class.php';
+
+					$projecttmp = new Project($db);
+
+					$i = 0;
+
+					while ($i < $num) {
+						$obj = $db->fetch_object($result);
+						$projecttmp->fetch($obj->id);
+
+						// To verify role of users
+						$userAccess = $projecttmp->restrictedProjectArea($user);
+
+						if ($user->rights->projet->lire && $userAccess > 0) {
+							print '<tr class="oddeven">';
+
+							// Ref
+							print '<td class="nowraponall">';
+							print $projecttmp->getNomUrl(1, '', 0, '', '-', 0, 1, '', 'project:'.$_SERVER["PHP_SELF"].'?socid=__SOCID__');
+							print '</td>';
+
+							// Label
+							print '<td class="tdoverflowmax200" title="'.dol_escape_htmltag($obj->title).'">'.dol_escape_htmltag($obj->title).'</td>';
+							// Date start
+							print '<td class="center">'.dol_print_date($db->jdate($obj->do), "day").'</td>';
+							// Date end
+							print '<td class="center">'.dol_print_date($db->jdate($obj->de), "day").'</td>';
+							// Opp amount
+							print '<td class="right">';
+							if ($obj->opp_status_code) {
+								print '<span class="amount">'.price($obj->opp_amount, 1, '', 1, -1, -1, '').'</span>';
+							}
+							print '</td>';
+							// Opp status
+							print '<td class="center">';
+							if ($obj->opp_status_code) {
+								print $langs->trans("OppStatus".$obj->opp_status_code);
+							}
+							print '</td>';
+							// Opp percent
+							print '<td class="right">';
+							if ($obj->opp_percent) {
+								print price($obj->opp_percent, 1, '', 1, 0).'%';
+							}
+							print '</td>';
+							// Status
+							print '<td class="right">'.$projecttmp->getLibStatut(5).'</td>';
+
+							print '</tr>';
+						}
+						$i++;
+					}
+				} else {
+					print '<tr class="oddeven"><td colspan="8"><span class="opacitymedium">'.$langs->trans("None").'</span></td></tr>';
+				}
+				$db->free($result);
+			} else {
+				dol_print_error($db);
+			}
+		}
+
 		$parameters = array('sql' => $sql, 'function' => 'show_projects');
 		$reshook = $hookmanager->executeHooks('printFieldListFooter', $parameters, $object, $action); // Note that $action and $object may have been modified by hook
 		print $hookmanager->resPrint;
diff --git a/htdocs/langs/en_US/admin.lang b/htdocs/langs/en_US/admin.lang
index 576180c63718d..f20f46f5c035d 100644
--- a/htdocs/langs/en_US/admin.lang
+++ b/htdocs/langs/en_US/admin.lang
@@ -88,6 +88,8 @@ SearchString=Search string
 NotAvailableWhenAjaxDisabled=Not available when Ajax disabled
 AllowToSelectProjectFromOtherCompany=On document of a third party, can choose a project linked to another third party
 TimesheetPreventAfterFollowingMonths=Prevent recording time spent after the following number of months
+PROJECT_DISPLAY_LINKED_BY_CONTACT=Display project linked by a common contact
+PROJECT_DISPLAY_LINKED_BY_CONTACT_help=That option add a new list on Project tab with all projects linked to that thirdparty via a contact relationship
 JavascriptDisabled=JavaScript disabled
 UsePreviewTabs=Use preview tabs
 ShowPreview=Show preview
diff --git a/htdocs/langs/en_US/projects.lang b/htdocs/langs/en_US/projects.lang
index f0d303285d492..3b0ec6edb3d37 100644
--- a/htdocs/langs/en_US/projects.lang
+++ b/htdocs/langs/en_US/projects.lang
@@ -142,6 +142,7 @@ DoNotShowMyTasksOnly=See also tasks not assigned to me
 ShowMyTasksOnly=View only tasks assigned to me
 TaskRessourceLinks=Contacts of task
 ProjectsDedicatedToThisThirdParty=Projects dedicated to this third party
+ProjectsLinkedToThisThirdParty=Projects having a contact that is a contact of the third party
 NoTasks=No tasks for this project
 LinkedToAnotherCompany=Linked to other third party
 TaskIsNotAssignedToUser=Task not assigned to user. Use button '<strong>%s</strong>' to assign task now.
diff --git a/htdocs/langs/fr_FR/admin.lang b/htdocs/langs/fr_FR/admin.lang
index 2857c585ba4ef..3750b9bab8a9c 100644
--- a/htdocs/langs/fr_FR/admin.lang
+++ b/htdocs/langs/fr_FR/admin.lang
@@ -88,6 +88,8 @@ SearchString=Chaîne de recherche
 NotAvailableWhenAjaxDisabled=Non disponible quand Ajax est désactivé
 AllowToSelectProjectFromOtherCompany=Sur les éléments d'un tiers, autorise la sélection d'un projet lié à un autre tiers
 TimesheetPreventAfterFollowingMonths=Empêcher l'enregistrement du temps consacré après le nombre de mois suivant
+PROJECT_DISPLAY_LINKED_BY_CONTACT=Afficher les projets liés par un contact
+PROJECT_DISPLAY_LINKED_BY_CONTACT_help=Cette option permet d'ajouter la liste de tous les projets dans lesquels un des contact du tiers est rattaché
 JavascriptDisabled=Javascript désactivé
 UsePreviewTabs=Afficher les onglets "Aperçu"
 ShowPreview=Afficher aperçu
diff --git a/htdocs/langs/fr_FR/projects.lang b/htdocs/langs/fr_FR/projects.lang
index 962372b874bbb..d5d1f2ce01c64 100644
--- a/htdocs/langs/fr_FR/projects.lang
+++ b/htdocs/langs/fr_FR/projects.lang
@@ -142,6 +142,7 @@ DoNotShowMyTasksOnly=Voir aussi les tâches qui ne me sont pas affectées
 ShowMyTasksOnly=Ne voir que les tâches qui me sont affectées
 TaskRessourceLinks=Contacts de la tâche
 ProjectsDedicatedToThisThirdParty=Projets dédiés à ce tiers
+ProjectsLinkedToThisThirdParty=Projets liés à ce tiers par un contact commun
 NoTasks=Aucune tâche pour ce projet
 LinkedToAnotherCompany=Liés à autre société
 TaskIsNotAssignedToUser=Tâche non assignée à l'utilisateur. Utilisez le bouton '<strong>%s</strong>'  pour assigner la tâche maintenant.
diff --git a/htdocs/projet/admin/project.php b/htdocs/projet/admin/project.php
index 184f8ac6104b4..9dc673aa745f6 100644
--- a/htdocs/projet/admin/project.php
+++ b/htdocs/projet/admin/project.php
@@ -841,6 +841,18 @@
 print '<input type="submit" class="button small reposition" name="PROJECT_TIMESHEET_PREVENT_AFTER_MONTHS" value="'.$langs->trans("Modify").'">';
 print '</td>';
 print '</tr>';
+
+$key = 'PROJECT_DISPLAY_LINKED_BY_CONTACT';
+echo '<tr class="oddeven">',
+		'<td class="left">',
+			$form->textwithpicto($langs->transnoentities($key), $langs->transnoentities($key . '_help')),
+		'</td>',
+		'<td class="right" colspan="2">',
+			ajax_constantonoff($key),
+		'</td>',
+	'</tr>';
+
+
 print '</table>';
 print '</div>';