diff --git a/README.md b/README.md
index 124afae..a33af09 100644
--- a/README.md
+++ b/README.md
@@ -480,6 +480,7 @@ Only main chapters:
:small_orange_diamond: Robtex - uses various sources to gather public information about IP numbers, domain names, host names, routes etc.
:small_orange_diamond: Security Trails - APIs for Security Companies, Researchers and Teams.
:small_orange_diamond: Online Curl - curl test, analyze HTTP Response Headers.
+ :small_orange_diamond: Online Tools for Developers - HTTP API tools, testers, encoders, converters, formatters, and other tools.
:small_orange_diamond: Ping.eu - online Ping, Traceroute, DNS lookup, WHOIS and others.
:small_orange_diamond: Network-Tools - network tools for webmasters, IT technicians & geeks.
:small_orange_diamond: Riseup - provides online communication tools for people and groups working on liberatory social change.