Update powered-by.md (#2433)

docs/powered-by.md

@@ -57,6 +57,7 @@ or providing commercial products including Apache SkyWalking.
 1. Qk365.com 上海青客电子商务有限公司 https://www.qk365.com
 1. Rongjinbao. 深圳融金宝互联网金融服务有限公司. http://www.rjb777.com
 1. Shouqi Limousine & chauffeur Group 首约科技(北京)有限公司. https://www.01zhuanche.com/
+1. Source++ https://sourceplusplus.com
 1. StartDT 奇点云 https://www.startdt.com/
 1. Successchannel 苏州渠成易销网络科技有限公司. http://www.successchannel.com
 1. Today36524.com Today便利店
@@ -89,11 +90,14 @@ Deploy SkyWalking in production enviroments.
 
 Support 60+ Instances, Over 300k Calls Per Minute, Over 50k Spans Per Second
 
-## Qiniu Cloud
-Provide a customized version SkyWalking agent. It could provide distributed tracing and integrated in its intelligence log management platform.
-
 ## Primeton
 Integrated in Primeton EOS PLATFORM 8, which is a commercial micro-service platform.
 
 ## Oscart
 Use multiple language agents from SkyWalking and its ecosystem, including SkyWalking Javaagent and [SkyAPM nodejs agent](https://github.com/SkyAPM/SkyAPM-nodejs). SkyWalking OAP platform acts as backend and visualization.
+
+## Qiniu Cloud
+Provide a customized version SkyWalking agent. It could provide distributed tracing and integrated in its intelligence log management platform.
+
+## Source++
+An open-source observant programming assistant which aims to bridge APM tools with the developer's IDE to enable tighter feedback loops. Source++ uses SkyWalking as the defacto APM for JVM-based applications.