diff --git a/ConfigureChecks.cmake b/ConfigureChecks.cmake
index a637df137..fff59ab29 100644
--- a/ConfigureChecks.cmake
+++ b/ConfigureChecks.cmake
@@ -575,3 +575,18 @@ if( BUILD_KXKB )
   endif( )
 
 endif( )
+
+if( BUILD_KCONTROL OR BUILD_TDM )
+  # SunOS kstat
+  check_library_exists( kstat kstat_open "" HAVE_KSTAT )
+  if( HAVE_KSTAT )
+    set( KSTAT_LIBRARIES kstat )
+  else()
+    if( ${CMAKE_SYSTEM_NAME} MATCHES "SunOS" )
+      tde_message_fatal( "libkstat not found on SunOS platform!" )
+    endif()
+    set( KSTAT_LIBRARIES "" )
+  endif( )
+endif( BUILD_KCONTROL OR BUILD_TDM )
+
+check_include_files( "sys/time.h;sys/loadavg.h" HAVE_SYS_LOADAVG_H )
diff --git a/config.h.cmake b/config.h.cmake
index 044a48da5..09baec618 100644
--- a/config.h.cmake
+++ b/config.h.cmake
@@ -19,6 +19,8 @@
 // kdesktop, konsole, kcontrol, kicker
 #cmakedefine HAVE_XRENDER 1
 
+#cmakedefine HAVE_SYS_LOADAVG_H 1
+
 // taskmanager, klipper
 #cmakedefine HAVE_XFIXES 1
 
@@ -137,6 +139,7 @@
 // tdesu
 #cmakedefine HAVE_STRUCT_UCRED 1
 #cmakedefine HAVE_GETPEEREID 1
+#cmakedefine HAVE_GETPEERUCRED 1
 #cmakedefine HAVE_SYS_SELECT_H 1
 #cmakedefine HAVE_SYS_WAIT_H 1
 #cmakedefine DEFAULT_SUPER_USER_COMMAND "@DEFAULT_SUPER_USER_COMMAND@"
@@ -163,6 +166,7 @@
 #cmakedefine HAVE_INITGROUPS 1
 #cmakedefine HAVE_MKSTEMP 1
 #cmakedefine HAVE_SETPROCTITLE 1
+#cmakedefine HAVE_PTHREAD_SETNAME_NP 1
 #cmakedefine HAVE_SYSINFO 1
 #cmakedefine HAVE_STRNLEN 1
 #cmakedefine HAVE_CRYPT 1
diff --git a/kcontrol/info/CMakeLists.txt b/kcontrol/info/CMakeLists.txt
index dbedbfe4d..35064b574 100644
--- a/kcontrol/info/CMakeLists.txt
+++ b/kcontrol/info/CMakeLists.txt
@@ -39,10 +39,14 @@ tde_create_translated_desktop(
 )
 
 
+##### configure checks ##########################
+
+include( ConfigureChecks.cmake )
+
 ##### kcm_info (module) #########################
 
 tde_add_kpart( kcm_info AUTOMOC
   SOURCES main.cpp memory.cpp ${OPENGL_SOURCES}
-  LINK tdeui-shared ${GL_LIBRARIES} ${GLU_LIBRARIES}
+  LINK tdeui-shared ${GL_LIBRARIES} ${GLU_LIBRARIES} ${KSTAT_LIBRARIES} ${DEVINFO_LIBRARIES}
   DESTINATION ${PLUGIN_INSTALL_DIR}
 )
diff --git a/kcontrol/info/ConfigureChecks.cmake b/kcontrol/info/ConfigureChecks.cmake
new file mode 100644
index 000000000..ec881f0f2
--- /dev/null
+++ b/kcontrol/info/ConfigureChecks.cmake
@@ -0,0 +1,21 @@
+#################################################
+#
+#  (C) 2023 DilOS Team
+#  denis (AT) tambov (DOT) ru
+#
+#  Improvements and feedback are welcome
+#
+#  This file is released under GPL >= 2
+#
+#################################################
+
+# devinfo
+check_library_exists( devinfo di_init "" HAVE_DEVINFO )
+if( HAVE_DEVINFO )
+  set( DEVINFO_LIBRARIES devinfo )
+else()
+  if( ${CMAKE_SYSTEM_NAME} MATCHES "SunOS" )
+    tde_message_fatal( "libdevinfo not found on SunOS platform!" )
+  endif()
+  set( DEVINFO_LIBRARIES "" )
+endif( )
diff --git a/kcontrol/info/info_solaris.cpp b/kcontrol/info/info_solaris.cpp
index 9f2b17e1b..f52927424 100644
--- a/kcontrol/info/info_solaris.cpp
+++ b/kcontrol/info/info_solaris.cpp
@@ -45,9 +45,9 @@ bool GetInfo_CPU( TQListView *lBox ) {
 	char		*ptr;
 	uint32_t	i, ncpus;
 	unsigned long	state_begin;
-	QString		state;
-	QString		mhz;
-	QString		inst;
+	TQString	state;
+	TQString	mhz;
+	TQString	inst;
 
 	/*
 	 *  get a kstat handle first and update the user's kstat chain
@@ -167,8 +167,8 @@ bool GetInfo_Partitions( TQListView *lBox ) {
 	struct mnttab	mnt;
 	struct statvfs	statbuf;
 	fsblkcnt_t	tmp;
-	QString		total;
-	QString		avail;
+	TQString	total;
+	TQString	avail;
 	time_t		mnttime;
 	char		*timetxt;
 	char		*ptr;
@@ -315,7 +315,7 @@ bool GetInfo_XServer_and_Video( TQListView *lBox ) {
  */
 TQListViewItem *mktree( TQListViewItem *top, const char *path ) {
 
-	QListViewItem	*parent,
+	TQListViewItem	*parent,
 			*previous,
 			*result;
 	char		*str = strdup( path ),
@@ -380,7 +380,7 @@ TQListViewItem *mktree( TQListViewItem *top, const char *path ) {
 /*
  *  prop_type_str()  -- return the property type as a string
  */
-char *prop_type_str( di_prop_t prop ) {
+const char *prop_type_str( di_prop_t prop ) {
 
 	switch( di_prop_type( prop )) {
 		case DI_PROP_TYPE_UNDEF_IT:
@@ -448,8 +448,8 @@ int prop_type_guess( uchar_t *data, int len ) {
  */
 int dump_minor_node( di_node_t node, di_minor_t minor, void *arg ) {
 
-	QListViewItem	*item;
-	QString		majmin;
+	TQListViewItem	*item;
+	TQString	majmin;
 	char		*type;
 	dev_t		dev;
 
@@ -466,7 +466,7 @@ int dump_minor_node( di_node_t node, di_minor_t minor, void *arg ) {
 		(type == NULL) ? "NULL" : type );
 
 	if( (dev = di_minor_devt( minor )) != DDI_DEV_T_NONE ) {
-		majmin.sprintf( "%ld/%ld", major( dev ), minor( dev ));
+		majmin.sprintf( "%u/%u", major( dev ), minor( dev ));
 		new TQListViewItem( item, i18n( "Major/Minor:" ), majmin );
 	}
 
@@ -562,7 +562,7 @@ TQString propvalue( di_prop_t prop ) {
  */
 int dump_node( di_node_t node, void *arg ) {
 
-	QListViewItem	*top = (TQListViewItem *) arg,
+	TQListViewItem	*top = (TQListViewItem *) arg,
 			*parent,
 			*previous;
 	char		*path;
@@ -641,7 +641,7 @@ int dump_node( di_node_t node, void *arg ) {
 			/*
 			 *  property type & value
 			 */
-			QListViewItem	*tmp,
+			TQListViewItem	*tmp,
 					*prev;
 			tmp = new TQListViewItem( previous, di_prop_name( prop ));
 			tmp->setExpandable( true );
@@ -668,7 +668,7 @@ int dump_node( di_node_t node, void *arg ) {
 
 bool GetInfo_Devices( TQListView *lBox ) {
 
-	QListViewItem		*top;
+	TQListViewItem		*top;
 	di_node_t		root_node;
 
 	/*
diff --git a/kicker/applets/naughty/NaughtyProcessMonitor.cpp b/kicker/applets/naughty/NaughtyProcessMonitor.cpp
index 09c02cbf9..0239720fe 100644
--- a/kicker/applets/naughty/NaughtyProcessMonitor.cpp
+++ b/kicker/applets/naughty/NaughtyProcessMonitor.cpp
@@ -39,6 +39,10 @@
 #include <signal.h>
 #include <unistd.h>
 
+#ifdef Q_OS_SOLARIS
+#include <procfs.h>
+#endif
+
 #include <tqfile.h>
 #include <tqstring.h>
 #include <tqstringlist.h>
@@ -210,7 +214,7 @@ NaughtyProcessMonitor::_process(ulong pid, uint load)
   bool
 NaughtyProcessMonitor::canKill(ulong pid) const
 {
-#ifdef __linux__
+#ifdef Q_OS_LINUX
   TQFile f("/proc/" + TQString::number(pid) + "/status");
 
   if (!f.open(IO_ReadOnly))
@@ -240,6 +244,17 @@ NaughtyProcessMonitor::canKill(ulong pid) const
       return false ;
   
   return geteuid () == d->uidMap_[pid] ;
+#elif defined(Q_OS_SOLARIS)
+  TQFile f("/proc/" + TQString::number(pid) + "/psinfo");
+  TQByteArray raw;
+  psinfo_t *inf;
+
+  if (!f.open(IO_ReadOnly))
+    return false;
+  raw = f.readAll();
+  f.close();
+  inf = (psinfo_t *)raw.data();
+  return geteuid() == inf->pr_euid;
 #else
   Q_UNUSED( pid );
   return false;
@@ -249,8 +264,9 @@ NaughtyProcessMonitor::canKill(ulong pid) const
   TQString
 NaughtyProcessMonitor::processName(ulong pid) const
 {
-#if defined(__linux__) || defined(__OpenBSD__) || defined(__NetBSD__)
-#ifdef __linux__
+#if defined(Q_OS_LINUX) || defined(__OpenBSD__) || defined(__NetBSD__) || \
+    defined(Q_OS_SOLARIS)
+#if defined(Q_OS_LINUX) || defined(Q_OS_SOLARIS)
   TQFile f("/proc/" + TQString::number(pid) + "/cmdline");
 
   if (!f.open(IO_ReadOnly))
@@ -344,7 +360,7 @@ NaughtyProcessMonitor::processName(ulong pid) const
   uint
 NaughtyProcessMonitor::cpuLoad() const
 {
-#ifdef __linux__
+#ifdef Q_OS_LINUX
   TQFile f("/proc/stat");
 
   if (!f.open(IO_ReadOnly))
@@ -400,7 +416,7 @@ NaughtyProcessMonitor::cpuLoad() const
   TQValueList<ulong>
 NaughtyProcessMonitor::pidList() const
 {
-#ifdef __linux__
+#if defined(Q_OS_LINUX) || defined(Q_OS_SOLARIS)
   TQStringList dl(TQDir("/proc").entryList());
 
   TQValueList<ulong> pl;
@@ -505,7 +521,7 @@ NaughtyProcessMonitor::pidList() const
   bool
 NaughtyProcessMonitor::getLoad(ulong pid, uint & load) const
 {
-#ifdef __linux__
+#ifdef Q_OS_LINUX
   TQFile f("/proc/" + TQString::number(pid) + "/stat");
 
   if (!f.open(IO_ReadOnly))
@@ -540,7 +556,8 @@ NaughtyProcessMonitor::getLoad(ulong pid, uint & load) const
   bool
 NaughtyProcessMonitor::kill(ulong pid) const
 {
-#if defined(__linux__) || defined(__OpenBSD__) || defined(__NetBSD__)
+#if defined(Q_OS_LINUX) || defined(__OpenBSD__) || defined(__NetBSD__) ||\
+  defined(Q_OS_SOLARIS)
   return 0 == ::kill(pid, SIGKILL);
 #else
   Q_UNUSED( pid );
diff --git a/kicker/kicker/ui/k_new_mnu.cpp b/kicker/kicker/ui/k_new_mnu.cpp
index 712868adb..86df79e24 100644
--- a/kicker/kicker/ui/k_new_mnu.cpp
+++ b/kicker/kicker/ui/k_new_mnu.cpp
@@ -31,6 +31,11 @@
 #include <dmctl.h>
 #include <inttypes.h>
 
+#ifdef Q_OS_SOLARIS
+#include <sys/statvfs.h>
+#define statfs statvfs
+#endif /* Q_OS_SOLARIS */
+
 #include <tqimage.h>
 #include <tqpainter.h>
 #include <tqstyle.h>
diff --git a/kicker/taskbar/taskcontainer.cpp b/kicker/taskbar/taskcontainer.cpp
index 6ffd688d3..b0e00964c 100644
--- a/kicker/taskbar/taskcontainer.cpp
+++ b/kicker/taskbar/taskcontainer.cpp
@@ -26,6 +26,10 @@ CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 #include <assert.h>
 
+#ifdef Q_OS_SOLARIS
+#include <procfs.h>
+#endif /* SunOS */
+
 #include <tqbitmap.h>
 #include <tqcolor.h>
 #include <tqcursor.h>
@@ -96,6 +100,18 @@ static void create_atoms(Display *d) {
 }
 
 bool is_process_resumable(pid_t pid) {
+#ifdef Q_OS_SOLARIS
+	TQFile procStatFile(TQString("/proc/%1/lwp/1/lwpsinfo").arg(pid));
+	if (procStatFile.open(IO_ReadOnly)) {
+		TQByteArray statRaw = procStatFile.readAll();
+		lwpsinfo_t *inf = (lwpsinfo_t *)statRaw.data();
+
+		procStatFile.close();
+		if( inf->pr_sname == 'T' ) {
+			return true;
+		}
+	}
+#else /* default */
 	TQFile procStatFile(TQString("/proc/%1/stat").arg(pid));
 	if (procStatFile.open(IO_ReadOnly)) {
 		TQByteArray statRaw = procStatFile.readAll();
@@ -107,13 +123,9 @@ bool is_process_resumable(pid_t pid) {
 		if( state == "T" ) {
 			return true;
 		}
-		else {
-			return false;
-		}
-	}
-	else {
-		return false;
 	}
+#endif /* read process status */
+	return false;
 }
 
 TaskContainer::TaskContainer(Task::Ptr task, TaskBar* bar, TaskBarSettings* settingsObject, TaskBarSettings* globalSettingsObject, TQWidget *parent, const char *name)
diff --git a/kpersonalizer/CMakeLists.txt b/kpersonalizer/CMakeLists.txt
index 19c3a6698..6fe020c82 100644
--- a/kpersonalizer/CMakeLists.txt
+++ b/kpersonalizer/CMakeLists.txt
@@ -40,6 +40,6 @@ tde_add_executable( kpersonalizer AUTOMOC
     kpersonalizer.cpp main.cpp kfindlanguage.cpp
     kcountrypagedlg.ui kospagedlg.ui keyecandypagedlg.ui
     tdestylepagedlg.ui krefinepagedlg.ui ksysinfo.cpp
-  LINK tdeio-shared
+  LINK tdeio-shared ${KSTAT_LIBRARIES}
   DESTINATION ${BIN_INSTALL_DIR}
 )
diff --git a/kpersonalizer/ksysinfo.cpp b/kpersonalizer/ksysinfo.cpp
index 20a089b8f..551dad3f8 100644
--- a/kpersonalizer/ksysinfo.cpp
+++ b/kpersonalizer/ksysinfo.cpp
@@ -235,8 +235,36 @@ TQFont KSysInfo::getFixedWidthFont(){
 ///////////////////
 
 ///////////////////
-//#elif defined(__svr4__) && defined(sun)
+#elif defined(Q_OS_SOLARIS)
 ///////////////////
+#include <kstat.h>
+
+	void KSysInfo::initHWInfo() {
+		kstat_ctl_t	*kctl;
+		kstat_t		*ksp;
+		kstat_named_t	*kdata;
+
+		m_cpu_speed = 0;
+		/* cpu_info:0:cpu_info0:current_clock_Hz */
+
+		kctl = kstat_open();
+		if (kctl == NULL)
+			return;
+		if (kstat_chain_update(kctl) != 0)
+			goto out;
+		ksp = kstat_lookup(kctl, "cpu_info", 0, "cpu_info0");
+		if (ksp == NULL)
+			goto out;
+		if (kstat_read(kctl, ksp, NULL) == -1 )
+			goto out;
+
+		kdata = (kstat_named_t *)kstat_data_lookup(ksp,
+			"clock_Hz");
+		if (kdata != NULL)
+			m_cpu_speed = kdata->value.ui64;
+		out:
+		kstat_close(kctl);
+	}
 
 ///////////////////
 //#elif __svr4__
diff --git a/ksysguard/ksysguardd/CMakeLists.txt b/ksysguard/ksysguardd/CMakeLists.txt
index f90bdadb0..16019bdc1 100644
--- a/ksysguard/ksysguardd/CMakeLists.txt
+++ b/ksysguard/ksysguardd/CMakeLists.txt
@@ -21,6 +21,8 @@ elseif( ${CMAKE_SYSTEM_NAME} MATCHES "FreeBSD" )
   set( OS_SPECIFIC_DIR FreeBSD )
 elseif( ${CMAKE_SYSTEM_NAME} MATCHES "NetBSD" )
   set( OS_SPECIFIC_DIR NetBSD )
+elseif( ${CMAKE_SYSTEM_NAME} MATCHES "SunOS" )
+  set( OS_SPECIFIC_DIR Solaris )
 else()
   tde_message_fatal( "Your operating system (${CMAKE_SYSTEM_NAME}) is not supported yet." )
 endif()
diff --git a/ksysguard/ksysguardd/Solaris/CMakeLists.txt b/ksysguard/ksysguardd/Solaris/CMakeLists.txt
new file mode 100644
index 000000000..aeeda9ac3
--- /dev/null
+++ b/ksysguard/ksysguardd/Solaris/CMakeLists.txt
@@ -0,0 +1,25 @@
+#################################################
+#
+#  (C) 2023 Denis Kozadaev
+#  denis (AT) tambov (DOT) ru
+#
+#  Improvements and feedback are welcome
+#
+#  This file is released under GPL >= 2
+#
+#################################################
+
+
+include_directories(
+  ${CMAKE_BINARY_DIR}
+  ${CMAKE_SOURCE_DIR}/ksysguard/CContLib
+  ${CMAKE_SOURCE_DIR}/ksysguard/ksysguardd
+)
+
+
+##### ksysguardd (static) #######################
+
+tde_add_library( ksysguardd STATIC
+  SOURCES
+    Memory.c LoadAvg.c ProcessList.c NetDev.c
+)
diff --git a/ksysguard/ksysguardd/modules.h b/ksysguard/ksysguardd/modules.h
index fe66ad537..6130f2a83 100644
--- a/ksysguard/ksysguardd/modules.h
+++ b/ksysguard/ksysguardd/modules.h
@@ -68,7 +68,7 @@
 #include "netdev.h"
 #endif /* OSTYPE_NetBSD */
 
-#ifdef OSTYPE_Solaris
+#if defined(OSTYPE_Solaris) || defined(OSTYPE_SunOS)
 #include "LoadAvg.h"
 #include "Memory.h"
 #include "NetDev.h"
@@ -146,7 +146,7 @@ struct SensorModul SensorModulList[] = {
   { "NetDev", initNetDev, exitNetDev, updateNetDev, checkNetDev, 0, NULLTIME },
 #endif /* OSTYPE_NetBSD */
 
-#ifdef OSTYPE_Solaris
+#if defined(OSTYPE_Solaris) || defined(OSTYPE_SunOS)
   { "LoadAvg", initLoadAvg, exitLoadAvg, updateLoadAvg, NULLVVFUNC, 0, NULLTIME },
   { "Memory", initMemory, exitMemory, updateMemory, NULLVVFUNC, 0, NULLTIME },
   { "NetDev", initNetDev, exitNetDev, updateNetDev, NULLVVFUNC, 0, NULLTIME },
diff --git a/tdeioslave/media/medianotifier/medianotifier.cpp b/tdeioslave/media/medianotifier/medianotifier.cpp
index 069e205de..1f2640807 100644
--- a/tdeioslave/media/medianotifier/medianotifier.cpp
+++ b/tdeioslave/media/medianotifier/medianotifier.cpp
@@ -19,14 +19,18 @@
 
 #include "medianotifier.h"
 
-#if defined (__OpenBSD__) || defined(__FreeBSD__) || defined(__NetBSD__)
+#if defined (__OpenBSD__) || defined(__FreeBSD__) || defined(__NetBSD__)\
+ || defined(Q_OS_SOLARIS)
+#ifdef Q_OS_SOLARIS
+#include <sys/types.h>
+#endif /* Q_OS_SOLARIS */
 #include <sys/statvfs.h>
 #include <sys/param.h>
 #include <sys/mount.h>
 #else
 #include <sys/vfs.h>
 #endif
-#if defined(__NetBSD__)
+#if defined(__NetBSD__) || defined(Q_OS_SOLARIS)
 #define statfs statvfs
 #endif
 
diff --git a/tdesu/CMakeLists.txt b/tdesu/CMakeLists.txt
index 4c33fb0d8..67ee4c645 100644
--- a/tdesu/CMakeLists.txt
+++ b/tdesu/CMakeLists.txt
@@ -40,6 +40,8 @@ else()
 endif()
 
 check_function_exists( getpeereid HAVE_GETPEEREID )
+check_function_exists( getpeerucred HAVE_GETPEERUCRED )
+
 check_include_file( "sys/select.h" HAVE_SYS_SELECT_H )
 check_include_file( "sys/wait.h" HAVE_SYS_WAIT_H )
 
diff --git a/tdesu/tdesud/tdesud.cpp b/tdesu/tdesud/tdesud.cpp
index d463a400a..950bb91b4 100644
--- a/tdesu/tdesud/tdesud.cpp
+++ b/tdesu/tdesud/tdesud.cpp
@@ -45,7 +45,8 @@
 #include <pwd.h>
 #include <errno.h>
 
-#if !defined(__OpenBSD__) && !defined(__FreeBSD__) && !defined(__NetBSD__)
+#if !defined(__OpenBSD__) && !defined(__FreeBSD__) && !defined(__NetBSD__) &&\
+	!defined(Q_OS_SOLARIS)
 #include <sys/prctl.h>
 #endif
 #include <sys/time.h>
@@ -251,7 +252,8 @@ int create_socket()
 
 int main(int argc, char *argv[])
 {
-#if !defined(__OpenBSD__) && !defined(__FreeBSD__) && !defined(__NetBSD__)
+#if !defined(__OpenBSD__) && !defined(__FreeBSD__) && !defined(__NetBSD__) &&\
+	!defined(Q_OS_SOLARIS)
     prctl(PR_SET_DUMPABLE, 0);
 #endif
 
diff --git a/tdm/ConfigureChecks.cmake b/tdm/ConfigureChecks.cmake
index 335a37f63..563ac6c0a 100644
--- a/tdm/ConfigureChecks.cmake
+++ b/tdm/ConfigureChecks.cmake
@@ -10,11 +10,15 @@
 #################################################
 
 find_library( UTIL_LIBRARY util )
+if( ${CMAKE_SYSTEM_NAME} MATCHES "SunOS" )
+  set( UTIL_LIBRARY "" )
+endif()
 
 check_function_exists( getdomainname HAVE_GETDOMAINNAME )
 check_function_exists( initgroups HAVE_INITGROUPS )
 check_function_exists( mkstemp HAVE_MKSTEMP )
 check_function_exists( setproctitle HAVE_SETPROCTITLE )
+check_function_exists( pthread_setname_np HAVE_PTHREAD_SETNAME_NP )
 check_function_exists( sysinfo HAVE_SYSINFO )
 check_function_exists( strnlen HAVE_STRNLEN )
 check_function_exists( getifaddrs HAVE_GETIFADDRS )
diff --git a/tdm/backend/CMakeLists.txt b/tdm/backend/CMakeLists.txt
index 8f11c4b34..f09704486 100644
--- a/tdm/backend/CMakeLists.txt
+++ b/tdm/backend/CMakeLists.txt
@@ -18,6 +18,7 @@ include_directories(
   ${CMAKE_SOURCE_DIR}/tdm/kfrontend
   ${XAU_INCLUDE_DIRS}
   ${XDMCP_INCLUDE_DIRS}
+  ${TQT_INCLUDE_DIRS}
 )
 
 link_directories(
diff --git a/tdm/backend/dm.c b/tdm/backend/dm.c
index 605f0b1c4..ac2471a17 100644
--- a/tdm/backend/dm.c
+++ b/tdm/backend/dm.c
@@ -51,6 +51,12 @@ from the copyright holder.
 # include <sys/vt.h>
 #endif
 
+#ifdef HAVE_PTHREAD_SETNAME_NP
+#include <pthread.h>
+#endif /* pthread_setname_np() */
+
+#include <tqglobal.h>
+
 // Limited by the number of VTs configured into the kernel or 256, whichever is less
 #define MAX_VT_NUMBER 48
 
@@ -66,7 +72,8 @@ static void MainLoop( void );
 
 static int signalFds[2];
 
-#if !defined(HAVE_SETPROCTITLE) && !defined(NOXDMTITLE)
+#if !defined(HAVE_SETPROCTITLE) && !defined(NOXDMTITLE) && \
+    !defined(HAVE_PTHREAD_SETNAME_NP)
 static char *Title;
 static int TitleLen;
 #endif
@@ -104,7 +111,7 @@ main( int argc, char **argv )
 		if (!StrDup( &progpath, argv[0] ))
 			Panic( "Out of memory" );
 	} else
-#ifdef __linux__
+#ifdef Q_OS_LINUX
 	{
 		/* note that this will resolve symlinks ... */
 		int len;
@@ -114,6 +121,16 @@ main( int argc, char **argv )
 		if (!StrNDup( &progpath, fullpath, len ))
 			Panic( "Out of memory" );
 	}
+#elif defined(Q_OS_SOLARIS)
+	{
+		/* note that this will resolve symlinks ... */
+		int len;
+		char fullpath[PATH_MAX];
+		if ((len = readlink( "/proc/self/path/a.out", fullpath, sizeof(fullpath) )) < 0)
+			Panic( "Invoke with full path specification or mount /proc" );
+		if (!StrNDup( &progpath, fullpath, len ))
+			Panic( "Out of memory" );
+	}
 #else
 # if 0
 		Panic( "Must be invoked with full path specification" );
@@ -161,7 +178,8 @@ main( int argc, char **argv )
 #endif
 	prog = strrchr( progpath, '/' ) + 1;
 
-#if !defined(HAVE_SETPROCTITLE) && !defined(NOXDMTITLE)
+#if !defined(HAVE_SETPROCTITLE) && !defined(NOXDMTITLE) && \
+    !defined(HAVE_PTHREAD_SETNAME_NP)
 	Title = argv[0];
 	TitleLen = (argv[argc - 1] + strlen( argv[argc - 1] )) - Title;
 #endif
@@ -1685,7 +1703,8 @@ UnlockPidFile( void )
 void
 SetTitle( const char *name )
 {
-#if !defined(HAVE_SETPROCTITLE) && !defined(NOXDMTITLE)
+#if !defined(HAVE_SETPROCTITLE) && !defined(NOXDMTITLE) && \
+    !defined(HAVE_PTHREAD_SETNAME_NP)
 	char *p;
 	int left;
 #endif
@@ -1694,6 +1713,8 @@ SetTitle( const char *name )
 	ReInitErrorLog();
 #ifdef HAVE_SETPROCTITLE
 	setproctitle( "%s", name );
+#elif defined(HAVE_PTHREAD_SETNAME_NP)
+	pthread_setname_np(pthread_self(), name);
 #elif !defined(NOXDMTITLE)
 	p = Title;
 	left = TitleLen;
diff --git a/tdm/backend/getfd.c b/tdm/backend/getfd.c
index aaad616b6..070ddd0cd 100644
--- a/tdm/backend/getfd.c
+++ b/tdm/backend/getfd.c
@@ -4,9 +4,11 @@
 #include <fcntl.h>
 #include <errno.h>
 #include <sys/ioctl.h>
-#ifdef __linux__
+#ifdef Q_OS_LINUX
 #include <linux/kd.h>
 #endif
+#include <tqglobal.h>
+
 #include "getfd.h"
 
 /*
@@ -22,7 +24,8 @@ is_a_console(int fd) {
 	char arg;
 
 	arg = 0;
-#if defined(__OpenBSD__) || defined(__FreeBSD__) || defined(__NetBSD__)
+#if defined(__OpenBSD__) || defined(__FreeBSD__) || defined(__NetBSD__) ||\
+    defined(Q_OS_SOLARIS)
 	return arg;
 #else
 	return (ioctl(fd, KDGKBTYPE, &arg) == 0
diff --git a/twin/client.cpp b/twin/client.cpp
index b57cab35f..a58fd22f2 100644
--- a/twin/client.cpp
+++ b/twin/client.cpp
@@ -27,6 +27,11 @@ License. See the file "COPYING" for the exact licensing terms.
 #include <tdelocale.h>
 #include <stdlib.h>
 
+#ifdef Q_OS_SOLARIS
+#include <procfs.h>
+#include <libgen.h>
+#endif /* SunOS */
+
 #include "bridge.h"
 #include "group.h"
 #include "workspace.h"
@@ -1860,15 +1865,30 @@ bool Client::isSuspendable() const
         }
     else
         {
+#ifdef Q_OS_SOLARIS
+        TQFile procStatFile(TQString("/proc/%1/lwp/1/lwpsinfo").arg(pid));
+#else /* default */
         TQFile procStatFile(TQString("/proc/%1/stat").arg(pid));
+#endif
         if (procStatFile.open(IO_ReadOnly))
             {
             TQByteArray statRaw = procStatFile.readAll();
             procStatFile.close();
+#ifdef Q_OS_SOLARIS
+            lwpsinfo_t *inf = (lwpsinfo_t *)statRaw.data();
+            char tbuf[PATH_MAX];
+            TQString tcomm;
+            TQString state(TQChar(inf->pr_sname));
+
+            readlink(TQString("/proc/%1/path/a.out").arg(pid).latin1(),
+                tbuf, sizeof(tbuf));
+            tcomm = basename(tbuf);
+#else /* default */
             TQString statString(statRaw);
             TQStringList statFields = TQStringList::split(" ", statString, TRUE);
             TQString tcomm = statFields[1];
             TQString state = statFields[2];
+#endif /* default */
             if( state != "T" )
                 {
                 // Make sure no windows of this process are special
@@ -1921,15 +1941,24 @@ bool Client::isResumeable() const
         }
     else
         {
+#ifdef Q_OS_SOLARIS
+        TQFile procStatFile(TQString("/proc/%1/lwp/1/lwpsinfo").arg(pid));
+#else /* default */
         TQFile procStatFile(TQString("/proc/%1/stat").arg(pid));
+#endif
         if (procStatFile.open(IO_ReadOnly))
             {
             TQByteArray statRaw = procStatFile.readAll();
             procStatFile.close();
+#ifdef Q_OS_SOLARIS
+            lwpsinfo_t *inf = (lwpsinfo_t *)statRaw.data();
+            TQString state(TQChar(inf->pr_sname));
+#else /* default */
             TQString statString(statRaw);
             TQStringList statFields = TQStringList::split(" ", statString, TRUE);
             TQString tcomm = statFields[1];
             TQString state = statFields[2];
+#endif /* default */
             if( state == "T" )
                 {
                 return true;
diff --git a/twin/compton-tde/compton.c b/twin/compton-tde/compton.c
index 603402fc6..2e76cb6b3 100644
--- a/twin/compton-tde/compton.c
+++ b/twin/compton-tde/compton.c
@@ -161,7 +161,11 @@ void delete_pid_file()
         printf("compton-tde lost connection to X server, restarting...\n"); fflush(stdout);
         sleep(1);
         char me[2048];
+#ifdef Q_OS_SOLARIS
+        int chars = readlink("/proc/self/path/a.out", me, sizeof(me));
+#else /* default */
         int chars = readlink("/proc/self/exe", me, sizeof(me));
+#endif /* self exe */
         me[chars] = 0;
         me[2047] = 0;
 	execl(me, basename(me), (char*)NULL);