[angvelem]

Подойдёт?

Код:

procedure TForm1.Button1Click(Sender: TObject);
var
  Wnd: hWnd;
  buff: array[0..127] of Char;
begin
  ListBox1.Clear;
  Wnd := GetWindow(Handle, GW_HWNDFIRST);
  while Wnd <> 0 do
  begin
    if (Wnd <> Application.Handle) and IsWindowVisible(Wnd) and (GetWindow(Wnd, GW_OWNER) = 0) and (GetWindowText(Wnd, buff, SizeOf(buff)) <> 0) then
    begin
      GetWindowText(Wnd, buff, SizeOf(buff));
      ListBox1.Items.Add(StrPas(buff));
    end;
    Wnd := GetWindow(Wnd, GW_HWNDNEXT);
  end;
  ListBox1.ItemIndex := 0;
end;

вот ещё:

Код:

procedure GetProcessList(var sl: TStrings);
var
  pe : TProcessEntry32;
  ph, snap : THandle; //дескрипторы процесса и снимка
  mh : hmodule; //дескриптор модуля
  procs : array[0..$FFF] of dword; //массив для хранения дескрипторов процессов
  count, cm : cardinal; //количество процессов
  I : Integer;
  ModName: array[0..max_path] of char; //имя модуля
begin
  sl.Clear;
  if Win32Platform = VER_PLATFORM_WIN32_WINDOWS then
  begin //если это Win9x
    snap := CreateToolhelp32Snapshot(th32cs_snapprocess, 0);
    if integer(snap) = -1 then
    begin
      exit;
    end
    else
    begin
      pe.dwSize := sizeof(pe);
      if Process32First(snap, pe) then
        repeat
          sl.Add(string(pe.szExeFile));
        until not Process32Next(snap, pe);
    end;
  end
  else
  begin //Если WinNT/2000/XP
    if not EnumProcesses(@procs, sizeof(procs), count) then
      Exit;

    for I := 0 to count div 4 - 1 do
    begin
      ph := OpenProcess(PROCESS_QUERY_INFORMATION or PROCESS_VM_READ,
        False, procs[i]);
      if ph > 0 then
      begin
        EnumProcessModules(ph, @mh, 4, cm);
        GetModuleFileNameEx(ph, mh, ModName, sizeof(ModName));
        sl.Add(string(ModName));
        CloseHandle(ph);
      end;
    end;
  end;
end;

Пример использования: 

procedure TForm1.Button1Click(Sender: TObject);
var
  tmp: TStrings;
begin
  tmp := memo1.Lines;
  GetProcessList(tmp);
end;