diff --git a/autoload/SpaceVim/layers/core.vim b/autoload/SpaceVim/layers/core.vim
index e127dfa1a..c183ec147 100644
--- a/autoload/SpaceVim/layers/core.vim
+++ b/autoload/SpaceVim/layers/core.vim
@@ -98,8 +98,17 @@ function! SpaceVim#layers#core#config() abort
   call SpaceVim#mapping#space#def('nnoremap', ['j', '$'], 'm`g_', 'push mark and goto end of line', 0)
   call SpaceVim#mapping#space#def('nnoremap', ['j', 'b'], '<C-o>', 'jump backward', 0)
   call SpaceVim#mapping#space#def('nnoremap', ['j', 'f'], '<C-i>', 'jump forward', 0)
-  call SpaceVim#mapping#space#def('nnoremap', ['j', 'd'], 'VimFiler -no-split', 'Explore current directory', 1)
-  call SpaceVim#mapping#space#def('nnoremap', ['j', 'D'], 'VimFiler', 'Explore current directory (other window)', 1)
+
+  " file tree key bindings
+  if g:spacevim_filemanager ==# 'vimfiler'
+    call SpaceVim#mapping#space#def('nnoremap', ['j', 'd'], 'VimFiler -no-split', 'Explore current directory', 1)
+    call SpaceVim#mapping#space#def('nnoremap', ['j', 'D'], 'VimFiler', 'Explore current directory (other window)', 1)
+  elseif g:spacevim_filemanager ==# 'nerdtree'
+  elseif g:spacevim_filemanager ==# 'defx'
+    call SpaceVim#mapping#space#def('nnoremap', ['j', 'd'], 'let g:_spacevim_autoclose_defx = 0 | Defx -split=no | let g:_spacevim_autoclose_defx = 1', 'Explore current directory', 1)
+    call SpaceVim#mapping#space#def('nnoremap', ['j', 'D'], 'Defx', 'Explore current directory (other window)', 1)
+  endif
+
   call SpaceVim#mapping#space#def('nmap', ['j', 'j'], '<Plug>(easymotion-overwin-f)', 'jump to a character', 0)
   call SpaceVim#mapping#space#def('nmap', ['j', 'J'], '<Plug>(easymotion-overwin-f2)', 'jump to a suite of two characters', 0)
   call SpaceVim#mapping#space#def('nnoremap', ['j', 'k'], 'j==', 'go to next line and indent', 0)
@@ -174,9 +183,11 @@ function! SpaceVim#layers#core#config() abort
   call SpaceVim#mapping#space#def('nnoremap', ['f', '/'], 'call SpaceVim#plugins#find#open()', 'find-files', 1)
   if s:SYS.isWindows
     call SpaceVim#mapping#space#def('nnoremap', ['f', 'd'], 'call call('
-        \ . string(s:_function('s:ToggleWinDiskManager')) . ', [])',
-        \ 'toggle Windows disk manager', 1)
+          \ . string(s:_function('s:ToggleWinDiskManager')) . ', [])',
+          \ 'toggle Windows disk manager', 1)
   endif
+
+  " file tree key bindings
   if g:spacevim_filemanager ==# 'vimfiler'
     call SpaceVim#mapping#space#def('nnoremap', ['f', 't'], 'VimFiler | doautocmd WinEnter', 'toggle_file_tree', 1)
     call SpaceVim#mapping#space#def('nnoremap', ['f', 'T'], 'VimFiler -no-toggle | doautocmd WinEnter', 'show_file_tree', 1)
diff --git a/autoload/SpaceVim/plugins/windisk.vim b/autoload/SpaceVim/plugins/windisk.vim
index 6824b447d..c9864cb91 100644
--- a/autoload/SpaceVim/plugins/windisk.vim
+++ b/autoload/SpaceVim/plugins/windisk.vim
@@ -35,7 +35,12 @@ endf
 
 function! s:open_disk(d) abort
   call s:close_disk_buffer()
-  exe 'VimFiler -no-toggle ' . a:d
+  if g:spacevim_filemanager ==# 'vimfiler'
+    exe 'VimFiler -no-toggle ' . a:d
+  elseif g:spacevim_filemanager ==# 'nerdtree'
+  elseif g:spacevim_filemanager ==# 'defx'
+    exe 'Defx -no-toggle ' . a:d
+  endif
   doautocmd WinEnter
 endfunction
 
diff --git a/config/plugins/defx.vim b/config/plugins/defx.vim
index 768fe0d2c..c5a271500 100644
--- a/config/plugins/defx.vim
+++ b/config/plugins/defx.vim
@@ -36,12 +36,14 @@ call defx#custom#column('filename', {
       \ 'opened_icon': '',
       \ })
 
+let g:_spacevim_autoclose_defx = 1
+
 augroup vfinit
   au!
   autocmd FileType defx call s:defx_init()
   " auto close last defx windows
   autocmd BufEnter * nested if
-        \ (!has('vim_starting') && winnr('$') == 1
+        \ (!has('vim_starting') && winnr('$') == 1  && g:_spacevim_autoclose_defx
         \ && &filetype ==# 'defx') |
         \ call s:close_last_vimfiler_windows() | endif
 augroup END
@@ -109,6 +111,8 @@ function! s:defx_init()
         \ defx#do_action('drop', 'vsplit')
   nnoremap <silent><buffer><expr> sv
         \ defx#do_action('drop', 'split')
+  nnoremap <silent><buffer><expr> st
+        \ defx#do_action('drop', 'tabedit')
   nnoremap <silent><buffer><expr> p
         \ defx#do_action('open', 'pedit')
   nnoremap <silent><buffer><expr> N
diff --git a/config/plugins/vimfiler.vim b/config/plugins/vimfiler.vim
index ab64f1e3e..f8b3a505e 100644
--- a/config/plugins/vimfiler.vim
+++ b/config/plugins/vimfiler.vim
@@ -92,9 +92,6 @@ function! s:vimfilerinit()
   silent! nunmap <buffer> -
   silent! nunmap <buffer> s
 
-  nnoremap <silent><buffer> gr  :<C-u>Denite grep:<C-R>=<SID>selected()<CR> -buffer-name=grep<CR>
-  nnoremap <silent><buffer> gf  :<C-u>Denite file_rec:<C-R>=<SID>selected()<CR><CR>
-  nnoremap <silent><buffer> gd  :<C-u>call <SID>change_vim_current_dir()<CR>
   nnoremap <silent><buffer> sg  :<C-u>call <SID>vimfiler_vsplit()<CR>
   nnoremap <silent><buffer> sv  :<C-u>call <SID>vimfiler_split()<CR>
   nnoremap <silent><buffer><expr> st  vimfiler#do_action('tabswitch')
diff --git a/wiki/en/Following-HEAD.md b/wiki/en/Following-HEAD.md
index bb0e924cf..72361cc24 100644
--- a/wiki/en/Following-HEAD.md
+++ b/wiki/en/Following-HEAD.md
@@ -85,4 +85,4 @@ The next release is v1.1.0:
 
 SpaceVim releases v1.0.0 at 2018-12-26, please check the release page:
 
-- [SpaceVim releases v0.9.0](https://spacevim.org/SpaceVim-release-v1.0.0/) for all the details
+- [SpaceVim releases v1.0.0](https://spacevim.org/SpaceVim-release-v1.0.0/) for all the details