diff --git a/Deep-Dive-Into-WeKan.md b/Deep-Dive-Into-WeKan.md
index e650bd9..44692cb 100644
--- a/Deep-Dive-Into-WeKan.md
+++ b/Deep-Dive-Into-WeKan.md
@@ -4,10 +4,17 @@
 - Translated to 70+ languages https://explore.transifex.com/wekan/wekan/
 - Used in most countries of the world https://snapcraft.io/wekan
 - Biggest user have about 30 000 users, using many pods at Kubernetes
-- About 300 contributors
-- Since December 2016, maintainer xet7 has added and removed about 4M lines of code https://github.com/wekan/wekan/graphs/contributors ,
+
 Commercial Support at https://wekan.team/commercial-support/
 
+## How much effort to create WeKan, in COCOMO model
+
+- WeKan: 34 years of effort, 316 contributors https://openhub.net/p/wekan
+- Meteor.js: 59 years of effort, 819 contributors https://openhub.net/p/meteor-js
+- Since December 2016, WeKan maintainer https://github.com/xet7 :
+  - has added and removed about 4M lines of code https://github.com/wekan/wekan/graphs/contributors
+  - https://openhub.net/accounts/xet7
+
 ## Browser support
 
 - Javascript enabled Desktop and Mobile Safari/Chromium/Firefox based browsers