diff --git a/README.md b/README.md
index 995d199..66d083f 100644
--- a/README.md
+++ b/README.md
@@ -27,11 +27,11 @@ If you prefer an email, contact me at `toolleeo@gmail.com`.
 
 # Summary
 
-To date, **756** apps/tools covered, divided in **43** categories.
+To date, **758** apps/tools covered, divided in **43** categories.
 
 # Index
 
-[Backup](#backup) (8) | [Calculators](#calc) (7) | [Chat and instant messaging](#chat) (10) | [Conversion](#conversion) (7) | [Data management](#data-management) (33) | [Data transfer](#transfer) (33) | [Directory changers](#cd) (10) | [Disk usage analyzers](#disk-analyzer) (9) | [Editors](#editors) (21) | [Email](#email) (10) | [File and file system handling](#file-handling) (38) | [File manager](#file-manager) (11) | [File renamers](#file-renamer) (8) | [File systems](#file-system) (3) | [Font management](#font) (2) | [Funny tools](#funny) (19) | [Games](#games) (35) | [Git and accessories](#git) (30) | [Graphics](#graphics) (24) | [Multimedia](#multimedia) (4) | [Networking](#networking) (20) | [Note taking](#note-taking) (15) | [Office tools](#office) (15) | [Organizers and calendars](#organizers) (14) | [Online search and resources](#online) (8) | [Password managers](#password-manager) (11) | [Productivity](#productivity) (29) | [Programming](#programming) (32) | [Science](#science) (8) | [Security and encryption](#security) (15) | [Shells](#shells) (6) | [Sound and music](#music) (24) | [System monitoring](#monitor) (26) | [System tools](#system) (28) | [Terminals](#terminal) (9) | [Text processing](#text-processing) (42) | [Text search](#text-search) (9) | [Todo managers](#todo-manager) (19) | [Utilities](#utility) (35) | [Versioning](#versioning) (6) | [Viewers](#viewers) (29) | [Web browser](#browser) (16) | [Web development](#webdev) (18)
+[Backup](#backup) (8) | [Calculators](#calc) (7) | [Chat and instant messaging](#chat) (10) | [Conversion](#conversion) (7) | [Data management](#data-management) (33) | [Data transfer](#transfer) (33) | [Directory changers](#cd) (12) | [Disk usage analyzers](#disk-analyzer) (9) | [Editors](#editors) (21) | [Email](#email) (10) | [File and file system handling](#file-handling) (38) | [File manager](#file-manager) (11) | [File renamers](#file-renamer) (8) | [File systems](#file-system) (3) | [Font management](#font) (2) | [Funny tools](#funny) (19) | [Games](#games) (35) | [Git and accessories](#git) (30) | [Graphics](#graphics) (24) | [Multimedia](#multimedia) (4) | [Networking](#networking) (20) | [Note taking](#note-taking) (15) | [Office tools](#office) (15) | [Organizers and calendars](#organizers) (14) | [Online search and resources](#online) (8) | [Password managers](#password-manager) (11) | [Productivity](#productivity) (29) | [Programming](#programming) (32) | [Science](#science) (8) | [Security and encryption](#security) (15) | [Shells](#shells) (6) | [Sound and music](#music) (24) | [System monitoring](#monitor) (26) | [System tools](#system) (28) | [Terminals](#terminal) (9) | [Text processing](#text-processing) (42) | [Text search](#text-search) (9) | [Todo managers](#todo-manager) (19) | [Utilities](#utility) (35) | [Versioning](#versioning) (6) | [Viewers](#viewers) (29) | [Web browser](#browser) (16) | [Web development](#webdev) (18)
 
 Some links to [related resources](#resources).
 
@@ -168,6 +168,8 @@ Tools for improving the efficiency of directory traversal.
 * [pazi](https://github.com/euank/pazi) - Fast autojump helper.
 * [pm](https://github.com/Angelmmiguel/pm) - The easy way to switch between your projects on ZSH. In short, another directory changer.
 * [SmartCd](https://github.com/CodesOfRishi/smartcd) - A cd command with improved usability features, which can remember your recently visited directory paths and, search and directly traverse to sub-directories and as well as parent directories, all with Fuzzy searching.
+* [z](https://github.com/rupa/z) - Directory changer based on aging and frecency.
+* [z.lua](https://github.com/skywind3000/z.lua) - Directory changer that learns your habits.
 * [zoxide](https://github.com/ajeetdsouza/zoxide) - A faster way to navigate your filesystem.
 
 ## <a name="disk-analyzer"></a>Disk usage analyzers
diff --git a/data/apps.csv b/data/apps.csv
index 739f5cb..997b909 100644
--- a/data/apps.csv
+++ b/data/apps.csv
@@ -755,3 +755,5 @@ programming,rebound,,https://github.com/shobrook/rebound,"Fetch Stack Overflow r
 multimedia,ffscreencast,,https://github.com/cytopia/ffscreencast,A ffmpeg screencast with video overlay and multi monitor support.
 productivity,Moro,,https://github.com/omidfi/moro,"A command line tool for tracking work hours, as simple as it can get."
 viewers,Grip,,https://github.com/joeyespo/grip,GitHub Readme Instant Preview - Preview markdown files as GitHub would render them.
+cd,z,,https://github.com/rupa/z,Directory changer based on aging and frecency.
+cd,z.lua,,https://github.com/skywind3000/z.lua,Directory changer that learns your habits.