diff --git a/README.md b/README.md
index c65db4b..2f93c41 100644
--- a/README.md
+++ b/README.md
@@ -34,7 +34,7 @@ If you prefer an email, contact me at `toolleeo@gmail.com`.
 
 # Summary
 
-* Apps/tools covered: **1141**
+* Apps/tools covered: **1142**
 * Number of categories: **69**.
 
 # Index
@@ -42,7 +42,7 @@ If you prefer an email, contact me at `toolleeo@gmail.com`.
 * [Anki, decks and flashcards](#flashcard) (6)
 * [Backup](#backup) (16)
 * [Calculators](#calc) (9), [Chat and instant messaging](#chat) (26), [ChatGPT / AI](#chatgpt) (9), [Clean up of files and directories](#file-dir-cleanup) (12), [Co-pilot](#copilot) (7), [Command launchers](#launcher) (18), [Commands cheatsheet and snippets](#cheatsheet) (14), [Conversion](#conversion) (14)
-* [Data management](#data-management) (14), [Data management - JSON/YAML/etc.](#data-management-json) (35), [Data management - Tabular data](#data-management-tabular) (17), [Data transfer](#transfer) (33), [DevOps](#devops) (9), [Diff](#diff) (10), [Directory changers (alternatives to cd)](#cd) (18), [Disk usage analyzers](#disk-analyzer) (12)
+* [Data management](#data-management) (14), [Data management - JSON/YAML/etc.](#data-management-json) (36), [Data management - Tabular data](#data-management-tabular) (17), [Data transfer](#transfer) (33), [DevOps](#devops) (9), [Diff](#diff) (10), [Directory changers (alternatives to cd)](#cd) (18), [Disk usage analyzers](#disk-analyzer) (12)
 * [Editors](#editors) (25), [Email](#email) (13)
 * [File and file system handling](#file-handling) (20), [File deletion and trash bin (alternatives to rm)](#rm) (5), [File explorer and tree visualization](#file-explorer) (10), [File finding (alternatives to find)](#find) (7), [File listing (alternatives to ls)](#ls) (7), [File manager](#file-manager) (18), [File renamers](#file-renamer) (11), [File systems](#file-system) (4), [Financial tools](#financial) (11), [Font management](#font) (2), [Funny tools](#funny) (27), [Fuzzy finders](#fuzzy-finder) (10)
 * [Games](#games) (43), [Git and accessories](#git) (41), [Graphics](#graphics) (31)
@@ -267,6 +267,7 @@ Tools to manage data files in JSON/YAML and similar formats.
 * [Graphtage](https://github.com/trailofbits/graphtage) - Graphtage is a commandline utility and underlying library for semantically comparing and merging tree-like structures, such as JSON, XML, HTML, YAML, plist, and CSS files.
 * [gron](https://github.com/tomnomnom/gron) - gron transforms JSON into discrete assignments to make it easier to grep for what you want and see the absolute 'path' to it.
 * [GROQ](https://github.com/sanity-io/groq-cli) - The CLI tool consumes both JSON and NDJSON documents. You can pass in data from a local file, or from piping to standard input.
+* [jayin](https://github.com/we-cli/jayin) - Piping with js at terminal.
 * [jello](https://github.com/kellyjonbrazil/jello) - CLI tool to filter JSON and JSON Lines data with Python syntax, similar to - suprise :-), jq!
 * [jid](https://github.com/simeji/jid) - You can drill down JSON interactively by using filtering queries like jq.
 * [jiq](https://github.com/fiatjaf/jiq) - jid on jq - interactive JSON query tool using jq expressions.
diff --git a/data/apps.csv b/data/apps.csv
index 7a4ad21..bc76309 100644
--- a/data/apps.csv
+++ b/data/apps.csv
@@ -1140,3 +1140,4 @@ data-management-json,jello,,https://github.com/kellyjonbrazil/jello,"CLI tool to
 data-management-json,jsed,,https://github.com/jtopjian/jsed,"jsed is a small command-line utility to add, remove, and search for data in a JSON structure."
 data-management-json,jtbl,,https://github.com/kellyjonbrazil/jtbl,A simple CLI tool to print JSON and JSON Lines data as a table in the terminal.
 data-management-json,YAML Paths,,https://github.com/wwkimball/yamlpath,"YAML/JSON/EYAML/Compatible get/set/merge/validate/scan/convert/diff processors using powerful, intuitive, command-line friendly syntax."
+data-management-json,jayin,,https://github.com/we-cli/jayin,Piping with js at terminal.