diff --git a/README.md b/README.md
index fa38985..f6172ce 100644
--- a/README.md
+++ b/README.md
@@ -159,6 +159,7 @@ _See also: [/r/chatops](https://old.reddit.com/r/chatops)*
 - [CFEngine](https://cfengine.com/) - Configuration management system for automated configuration and maintenance of large-scale computer systems. ([Source Code](https://github.com/cfengine/core)) `GPL-3.0` `C`
 - [Chef](https://www.chef.io/products/chef-infra) - Configuration management tool using a pure-Ruby, domain-specific language (DSL) for writing system configuration "recipes". ([Source Code](https://github.com/chef/chef)) `Apache-2.0` `Ruby`
 - [Puppet](https://www.puppet.com/) - Software configuration management tool which includes its own declarative language to describe system configuration. ([Source Code](https://github.com/puppetlabs/puppet)) `Apache-2.0` `Ruby/C`
+- [Rudder](https://www.rudder.io/) - Scalable and dynamic configuration management system for patching, security & compliance, based on CFEngine. ([Source Code](https://github.com/Normation/rudder)) `GPL-3.0` `Scala`
 - [Salt](https://docs.saltproject.io/) - Event-driven IT automation, remote task execution, and configuration management software. ([Source Code](https://github.com/saltstack/salt)) `Apache-2.0` `Python`
 
 
@@ -431,6 +432,7 @@ Log management tools: collect, parse, visualize...
 
 An [email client](https://en.wikipedia.org/wiki/Email_client), email reader or, more formally, message user agent (MUA) or mail user agent is a computer program used to access and manage a user's email. 
 
+- [aerc](https://aerc-mail.org/) - Terminal MUA with a focus on plaintext and features for developers. ([Source Code](https://git.sr.ht/~rjarry/aerc)) `MIT` `Go`
 - [Claws Mail](http://www.claws-mail.org/) - Old school email client (and news reader), based on GTK+. ([Source Code](https://git.claws-mail.org/?p=claws.git;a=tree)) `GPL-3.0` `C`
 - [ImapSync](http://imapsync.lamiral.info/) - Simple IMAP migration tool for copying mailboxes to other servers. ([Source Code](https://github.com/imapsync/imapsync)) `NLPL` `Perl`
 - [Mutt](http://www.mutt.org/) - Small but very powerful text-based mail client. ([Source Code](https://gitlab.com/muttmua/mutt)) `GPL-2.0` `C`