diff --git a/doc/todo/PLUGINS b/doc/todo/PLUGINS
index 89c6c329b0f..886ea2b2b0b 100644
--- a/doc/todo/PLUGINS
+++ b/doc/todo/PLUGINS
@@ -233,15 +233,6 @@ folder:
 
 ## library supported ##
 
-https://github.com/toml-lang/toml
-
-https://github.com/martinh/libconfuse
-
-MacOSX plist files
-
-http://rfc.zeromq.org/spec:4/ZPL
-	https://github.com/zeromq/czmq/blob/master/src/zconfig.c
-
 xpath plugin:
 	on an xml file with an mapping from (reduced) xpath<->elektra keys
 
@@ -249,7 +240,7 @@ C/C++ serialization
 	(ksNew(keyNew()))
 	reading with llvm?
 
-/etc/groups plugin
+/etc/groups plugin (could be done with csvstorage)
 
 other file formats:
 	xfree
@@ -259,10 +250,6 @@ other file formats:
 	xml
 	inittab
 
-tcl:
-	parse output?
-	struct output!
-
 compile lenses as plugin:
 	+ no dependency at runtime
 	+ may be faster?
@@ -276,7 +263,6 @@ xfconf file storage (see #47)
 
 Kyoto Cabinet
 unqlite
-libconfig
 eet
 tdb.samba (using tdb_traverse)
 sqlite