diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -180,7 +180,6 @@ Configuration management database (CMDB) software.
 
 _Related: [IT Asset Management](#it-asset-management)_
 
-- [Collins](https://tumblr.github.io/collins/) - At Tumblr, it's the infrastructure source of truth and knowledge. ([Source Code](https://github.com/tumblr/collins)) `Apache-2.0` `Docker/Scala`
 - [i-doit](https://www.i-doit.org/) - IT Documentation and CMDB. `AGPL-3.0` `PHP`
 - [iTop](https://combodo.com/) - Complete ITIL web based service management tool. ([Source Code](https://github.com/Combodo/iTop)) `AGPL-3.0` `PHP`
 - [netbox](https://netbox.dev/) - IP address management (IPAM) and data center infrastructure management (DCIM) tool. ([Demo](https://demo.netbox.dev/), [Source Code](https://github.com/netbox-community/netbox)) `Apache-2.0` `Python`
@@ -487,7 +486,6 @@ Monitoring software.
 
 _Related: [Metrics & Metric Collection](#metrics--metric-collection)_
 
-- [Adagios](http://adagios.org/) - Web based Nagios interface for configuration and monitoring (replacement to the standard interface), and a REST interface. ([Source Code](https://github.com/opinkerfi/adagios)) `AGPL-3.0` `Docker/Python`
 - [Alerta](https://alerta.io/) - Distributed, scalable and flexible monitoring system. ([Source Code](https://github.com/alerta/alerta)) `Apache-2.0` `Python`
 - [Beszel](https://beszel.dev/) - Lightweight server monitoring platform that includes Docker statistics, historical data, and alert functions. ([Source Code](https://github.com/henrygd/beszel)) `MIT` `Go`
 - [Cacti](https://www.cacti.net) - Web-based network monitoring and graphing tool. ([Source Code](https://github.com/Cacti/cacti)) `GPL-2.0` `PHP`