Adding Gray Duck Mail to Communication - Email - Mailing Lists and Newsletters (#2975)

fixes #2975

README.md

@@ -154,6 +154,7 @@ _Related: [Internet of Things (IoT)](#internet-of-things-iot)_
 - [betanin](https://github.com/sentriz/betanin/) - Music organization man-in-the-middle of your torrent client and music player. Based on beets.io, similar to Sonarr and Radarr. `GPL-3.0` `Python`
 - [ChiefOnboarding](https://chiefonboarding.com) - Employee onboarding platform that allows you to provision user accounts and create sequences with todo items, resources, text/email/Slack messages, and more! Available as a web portal and Slack bot. ([Source Code](https://github.com/chiefonboarding/ChiefOnboarding)) `AGPL-3.0` `Python`
 - [CouchPotato](https://couchpota.to/) - CouchPotato is an automatic Video Library Manager for Movies. Automatic torrent/nzb searching, downloading, and processing at the qualities you want. ([Source Code](https://github.com/CouchPotato/CouchPotatoServer)) `GPL-3.0` `Python`
+- [Eonza](https://www.eonza.org) - Eonza is used to create scripts and automate tasks on servers or VPS hosting. Manage your servers from any browser on any device. ([Demo](https://playground.eonza.org/), [Source Code](https://github.com/gentee/eonza)) `MIT` `Go`
 - [Episodes](https://github.com/guptachetan1997/Episodes) `⚠` - Self Hosted TV show Episode tracker and recommender built using django, bootstrap4. `MIT` `Python`
 - [Exadel CompreFace](https://exadel.com/solutions/compreface/) - face recognition system that provides REST API for face recognition, face detection, and other face services, and is easily deployed with docker. There are SDKs for Python and JavaScript languages. Can be used without prior machine learning skills. ([Source Code](https://github.com/exadel-inc/CompreFace)) `Apache-2.0` `Docker/Java/Nodejs`
 - [feed2toot](https://feed2toot.readthedocs.io/) - Feed2toot parses a RSS feed, extracts the last entries and sends them to Mastodon. ([Source Code](https://gitlab.com/chaica/feed2toot)) `GPL-3.0` `Python`
@@ -423,6 +424,7 @@ MTAs / SMTP servers
 Mailing lists servers and mass mailing software - one message to many recipients.
 
 - [Dada Mail](https://dadamailproject.com/) - Web-based list management system that can be used for announcement lists and/or discussion lists. ([Source Code](https://github.com/justingit/dada-mail)) `GPL-2.0` `Perl`
+- [Gray Duck Mail](https://grayduckmail.com) - Self hosted email discussion list management that uses external email providers. ([Source Code](https://github.com/wagesj45/gray-duck-mail)) `GPL-3.0` `Docker`
 - [HyperKitty](https://wiki.list.org/HyperKitty) - Open source Django application to provide a web interface to access GNU Mailman v3 archives. ([Demo](https://lists.mailman3.org/), [Source Code](https://gitlab.com/mailman/hyperkitty)) `GPL-3.0` `Python`
 - [Keila](https://www.keila.io) - Self-hosted reliable and easy-to-use newsletter tool. Alternative to proprietary services like Mailchimp or Sendinblue. ([Demo](https://app.keila.io), [Source Code](https://github.com/pentacent/keila)) `AGPL-3.0` `Elixir`
 - [Listmonk](https://listmonk.app/) - High performance, self-hosted newsletter and mailing list manager with a modern dashboard. ([Source Code](https://github.com/knadh/listmonk)) `AGPL-3.0` `Go`
@@ -926,6 +928,7 @@ _Related: [Groupware](#groupware)_
 - [QuickShare](https://github.com/ihexxa/quickshare) - Quick and simple file sharing between different devices. ([Demo](https://hexxa-quickshare.herokuapp.com/)) `LGPL-3.0` `Go`
 - [Share](https://github.com/MrDemonWolf/share) - Simple yet advanced uploader - upload files, images and text with moderation tools for admins. Can be used for friends and family or just for you. Integration with ShareX and more. `MIT` `Nodejs`
 - [Sharry](https://github.com/eikek/sharry) - Share files easily over the internet between authenticated and anonymous users (both ways) with resumable up- and downloads. `GPL-3.0` `Scala/Java`
+- [Snapdrop](https://snapdrop.net/) - Local file sharing in your browser. Inspired by Apple's Airdrop. ([Demo](https://snapdrop.net/), [Source Code](https://github.com/RobinLinus/snapdrop)) `GPL-3.0-only` `Docker`
 - [transfer.sh](https://transfer.sh) - Easy file sharing from the command line. ([Source Code](https://github.com/dutchcoders/transfer.sh)) `MIT` `Go`
 - [Uguu](https://uguu.se/) - Stores files and deletes after X amount of time. ([Source Code](https://github.com/nokonoko/uguu)) `MIT` `PHP`
 - [Void](https://github.com/AlphaNecron/Void) - Lightweight, fast and elegant file hosting service for ShareX with Web UI and REST API. ([Source Code](https://github.com/AlphaNecron/Void/)) `MIT` `Nodejs`
@@ -1444,6 +1447,7 @@ _Related: [Monitoring](#monitoring)_
 - [Homer](https://github.com/bastienwirtz/homer) - A dead simple static homepage to expose your server services, with an easy yaml configuration and connectivity check. `Apache-2.0` `HTML5`
 - [Jmz HomeProxy](https://github.com/jmztaylor/homelab_proxy) - A simple and clean dashboard for self hosted services. `GPL-3.0` `PHP`
 - [LinkPage](https://links.zrd.sh) - LinkPage is a FOSS self-hosted alternative to link listing websites such as LinkTree and Campsite.bio. ([Source Code](https://github.com/rhnvrm/linkpage)) `BSD-2-Clause` `Go`
+- [LittleLink Custom](https://littlelink-custom.com/) - Open-source, customizable, self-hosted alternative to services like Linktree and Manylink with an intuitive, easy to use user/admin interface. LittleLink Custom allows you to link all your social media platforms easily accessible on one page. ([Demo](https://demo.littlelink-custom.com/), [Source Code](https://github.com/JulianPrieber/littlelink-custom)) `GPL-3.0` `PHP`
 - [Organizr](https://github.com/causefx/Organizr) - Organizr aims to be your one stop shop for your Servers Frontend. `GPL-3.0` `PHP`
 - [Personal management system](https://github.com/Volmarg/personal-management-system) - Central point for managing personal data (billings, payments, job holidays, notes etc.). ([Demo](http://personal-management-system.pl/)) `MIT` `PHP`
 - [simple-dash](https://github.com/kutyla-philipp/simple-dash) - A simple, fully responsive Dashboard to forward to the services of your choice. ([Demo](https://kutyla-philipp.github.io/simple-dash/)) `MIT` `Javascript`