README.md

@@ -34,7 +34,6 @@ DevOps is the combination of cultural philosophies, practices, and tools that in
 - [Programming Languages](#programming-languages)
 - [Chat and ChatOps](#chat-and-chatops)
 - [Secret Management](#secret-management)
-- [Security](#security)
 - [Sharing](#sharing)
 - [VPN](#vpn)
 - [Resources](#resources)
@@ -167,8 +166,6 @@ DevOps is the combination of cultural philosophies, practices, and tools that in
 - [KubeVela](https://kubevela.io/) - Modern application delivery platform that makes deploying and operating applications across today's hybrid, multi-cloud environments easier, faster and more reliable.
 - [Stacktape](https://stacktape.com) - Developer-friendly Infrastructure as a Code framework built on top of AWS.
 - [Score](https://score.dev) - Open Source developer-centric and platform-agnostic workload specification.
-- [Meshery](https://meshery.io/) - An open source, cloud native manager that enables the design and management of all Kubernetes-based infrastructure and applications.
-- [Digger](https://digger.dev) - Open Source Infrastructure as Code management tool that runs within your CI/CD system.
 
 ## Continuous Integration & Delivery
 
@@ -220,6 +217,7 @@ DevOps is the combination of cultural philosophies, practices, and tools that in
 - [Gitblit](https://github.com/gitblit/gitblit) - Pure Java Git solution for managing, viewing, and serving Git repositories.
 - [RhodeCode](https://rhodecode.com/) - Centralized control for distributed repositories. Mercurial, Git, and Subversion under a single roof.
 - [Radicle](https://radicle.xyz/) - Radicle is a sovereign peer-to-peer network for code collaboration, built on top of Git.
+- [DevHub](https://dev-hub.eu) - Git source code hosting with base in Europe and a strong focus on Privacy, Security and Performance.
 
 ## Web Servers
 
@@ -273,12 +271,13 @@ DevOps is the combination of cultural philosophies, practices, and tools that in
 - [Alerta](https://github.com/alerta/alerta) - Scalable, minimal configuration and visualization monitoring system.
 - [Cabot](https://github.com/arachnys/cabot) - Self-hosted, easily-deployable monitoring and alerts service.
 - [Amon](https://github.com/amonapp/amon) - Modern server monitoring platform.
+- [Flapjack](https://flapjack.io/) - Monitoring notification routing + event processing system.
 - [Icinga](https://icinga.com/) - Monitors availability and performance, gives you simple access to relevant data and raises alerts.
 - [Monit](https://mmonit.com/monit/#home) - Managing and monitoring Unix systems.
 - [Naemon](http://www.naemon.org/) - Fast, stable and innovative while giving you a clear view of the state of your network and applications.
 - [Nagios](https://www.nagios.org/) - Computer-software application that monitors systems, networks and infrastructure.
 - [Sentry](https://sentry.io/welcome/) - Error monitoring that helps all software teams discover, triage, and prioritize errors in real-time.
-- [Shinken](https://github.com/shinken-solutions/shinken) - Monitoring framework.
+- [Shinken](http://www.shinken-monitoring.org/) - Monitoring framework.
 - [Zabbix](https://www.zabbix.com/) - Mature and effortless monitoring solution for network monitoring and application monitoring.
 - [Glances](https://github.com/nicolargo/glances) - Monitoring information through a curses or Web based interface.
 - [Healthchecks](https://github.com/healthchecks/healthchecks) - Cron monitoring tool.
@@ -358,7 +357,6 @@ DevOps is the combination of cultural philosophies, practices, and tools that in
 
 - [Gerrit](https://www.gerritcodereview.com/) - Web-based team code collaboration tool.
 - [Review Board](https://www.reviewboard.org/) - Web-based collaborative code review tool.
-- [MeshMap](https://layer5.io/cloud-native-management/meshmap) - World’s only visual designer for Kubernetes and cloud native applications. Design, deploy, and manage your Kubernetes-based, cloud native deployments allowing you to speed up infrastructure configuration.
 
 ## Distributed messaging
 
@@ -408,12 +406,6 @@ DevOps is the combination of cultural philosophies, practices, and tools that in
 - [Infisical](https://github.com/Infisical/infisical) - Open source end-to-end encrypted secrets sync for teams and infrastructure.
 - [Lade](https://github.com/zifeo/lade) - Automatically load secrets from your preferred vault as environment variables.
 
-## Security
-
-*Validating, lint and best practice in term of Security on code or infrastructure.*
-
-- [checkov](https://github.com/bridgecrewio/checkov) - Prevent cloud misconfigurations and find vulnerabilities during build-time in infrastructure as code, container images and open source packages.
-
 ## Sharing
 
 *A collection of tools to help with sharing knowledge and telling the story.*
@@ -449,7 +441,7 @@ as an academic project from University of Tsukuba, under the Apache License 2.0.
 - [Hands-On Security in DevOps](https://www.packtpub.com/networking-and-servers/hands-security-devops)
 - [Site Reliability Engineering](https://sre.google/sre-book/table-of-contents/)
 - [The Site Reliability Workbook](https://sre.google/workbook/table-of-contents/)
-- [Building Secure & Reliable Systems](https://google.github.io/building-secure-and-reliable-systems/raw/toc.html)
+- [Building Secure & Reliable Systems](https://static.googleusercontent.com/media/sre.google/ro//static/pdf/building_secure_and_reliable_systems.pdf)
 - [Infrastructure as Code: Managing Servers in the Cloud](http://shop.oreilly.com/product/0636920039297.do)
 - [The DevOps Handbook](https://www.oreilly.com/library/view/the-devops-handbook/9781457191381/)