diff --git a/README.md b/README.md
index ba8621e..2b8709b 100644
--- a/README.md
+++ b/README.md
@@ -945,6 +945,7 @@ See also <https://en.wikipedia.org/wiki/List_of_streaming_media_systems>, <https
 See also https://github.com/n1trux/awesome-sysadmin#it-asset-management
 
 - [Akaunting](https://akaunting.com/) - Akaunting is a free, online and open source accounting software designed for small businesses and freelancers. ([Source Code](https://github.com/akaunting/akaunting)) `GPL-3.0` `PHP`
+- [BTCPay Server](https://btcpayserver.org/) - A self-hosted Bitcoin and other cryptocurrencies payment processor. ([Demo](https://mainnet.demo.btcpayserver.org/), [Source Code](https://github.com/btcpayserver/)) `MIT` `C#`
 - [Benedetto](https://github.com/arecker/bennedetto) - Bennedetto is a simple, turn-based budget management app. `GPL-3.0` `Python`
 - [Boodle](https://github.com/manuel-uberti/boodle) - Simple accounting single-page application in Clojure and ClojureScript. `EPL-1.0` `Clojure`
 - [Budget App](https://github.com/paukiatwee/budgetapp/) - Budget App is an open source personal budgeting application. `Apache-2.0` `Java`