diff --git a/YouCompleteMe.md b/YouCompleteMe.md
new file mode 100644
index 0000000..8230f17
--- /dev/null
+++ b/YouCompleteMe.md
@@ -0,0 +1,28 @@
+Install [YouCompleteMe](https://github.com/ycm-core/YouCompleteMe)
+
+```sh
+cd ~/.vim/bundle/YouCompleteMe
+./install.py  # --clang-completer is not needed
+```
+
+## Configure
+
+```vim
+let g:ycm_language_server =
+  \ [{
+  \   'name': 'ccls',
+  \   'cmdline': [ 'ccls' ],
+  \   'filetypes': [ 'c', 'cpp', 'cuda', 'objc', 'objcpp' ],
+  \   'project_root_files': [ '.ccls-root', 'compile_commands.json' ]
+  \ }]
+```
+
+## Cross references
+
+```vim
+:YcmCompleter GoToDefinition
+:YcmCompleter GoToDeclaration
+:YcmCompleter GoToReferences
+:YcmCompleter GoToImplementation
+:YcmCompleter GoToType
+```
diff --git a/_Sidebar.md b/_Sidebar.md
index 68af54e..ada2d92 100644
--- a/_Sidebar.md
+++ b/_Sidebar.md
@@ -13,6 +13,7 @@
     + [[LanguageClient-neovim]]
     + [[vim-lsp]]
     + [[vim-lsc]]
+    + [[YouCompleteMe]]
   - [[Visual Studio Code]]
   - [[Monaco Editor | https://github.com/MaskRay/ccls/wiki/Monaco-Editor]]
 * [[Project Setup]]