update twtxt.net/yarn.social url (#2828)

yarn.social is the main page, twtxt.net is just one of the instances, now

README.md

@@ -307,6 +307,7 @@ _See also: [Comparison of CalDAV and CardDAV implementations - Wikipedia](https:
 - [GNUnet](https://gnunet.org/) - Free software framework for decentralized, peer-to-peer networking. ([Source Code](https://gnunet.org/git/)) `GPL-3.0` `C`
 - [Gotify](https://gotify.net/) - Self-hosted notification server with Android and CLI clients, similar to PushBullet. ([Source Code](https://github.com/gotify/server), [Clients](https://github.com/gotify/android)) `MIT` `Go`
 - [Hawkpost](https://hawkpost.co) - HawkPost is a web app that lets you create unique links that you can share with a person that desires to send you important information but doesn't know how to encrypt it. The message is encrypted in their browser and sent to your email address. ([Source Code](https://github.com/whitesmith/hawkpost)) `MIT` `Python`
+- [Jam](https://jamshelf.com/) - Jam is an open source alternative to Clubhouse: private audio chat rooms to talk to friends and family. ([Demo](https://jam.systems/), [Source Code](https://github.com/jam-systems/jam)) `AGPL-3.0` `Docker/Node.js`
 - [Jami](https://jami.net/) - Free and universal communication platform which preserves the user's privacy and freedoms (formerly GNU Ring). ([Source Code](https://git.ring.cx/savoirfairelinux/ring-project)) `GPL-3.0` `C++`
 - [Jitsi Meet](https://jitsi.org/Projects/JitsiMeet) - Jitsi Meet is an OpenSource (MIT) WebRTC Javascript application that uses Jitsi Videobridge to provide high quality, scalable video conferences. ([Source Code](https://github.com/jitsi/jitsi-meet)) `MIT` `Javascript`
 - [Jitsi Video Bridge](https://jitsi.org/Projects/JitsiVideobridge) - WebRTC compatible Selective Forwarding Unit (SFU) that allows for multiuser video communication. ([Source Code](https://github.com/jitsi/jitsi-videobridge)) `Apache-2.0` `Java`
@@ -544,7 +545,7 @@ Mailing lists servers and mass mailing software - one message to many recipients
 - [Thredded](https://github.com/thredded/thredded) - Forums, feature-rich and simple. `MIT` `Ruby`
 - [Tokumei](https://tokumei.co/) - Anonymous microblogging platform. ([Source Code](https://gitlab.com/tokumei/tokumei)) `ISC` `rc`
 - [twister](http://twister.net.co/) - Fully decentralized P2P microblogging platform leveraging the free software implementations of Bitcoin and BitTorrent protocols. ([Source Code](https://github.com/miguelfreitas/twister-core)) `MIT` `C++`
-- [twtxt.net](https://twtxt.net) - a Self-Hosted, Twitter™-like Decentralised micro-logging platform. No ads, no tracking, your content, your data. ([Source Code](https://git.mills.io/yarnsocial/yarn)) `MIT` `Go`
+- [yarn.social](https://yarn.social) - a Self-Hosted, Twitter™-like Decentralised micro-logging platform. No ads, no tracking, your content, your data. ([Source Code](https://git.mills.io/yarnsocial/yarn)) `MIT` `Go`
 - [Vanilla Forums](https://vanillaforums.org/) - Simple and flexible forum software. ([Source Code](https://github.com/vanilla/vanilla)) `GPL-2.0` `PHP`
 - [Zusam](https://zusam.org) - Free and open-source way to self-host private forums for groups of friends or family. ([Demo](https://demo.zusam.org), [Source Code](https://github.com/zusam/zusam)) `AGPL-3.0` `PHP`
 
@@ -695,7 +696,7 @@ _See also: [awesome-sysadmin/DNS](https://github.com/awesome-foss/awesome-sysadm
 - [Mayan EDMS](https://www.mayan-edms.com) - Free Open Source Electronic Document Management System. An electronic vault for your documents with preview generation, OCR, and automatic categorization among other features. ([Source Code](https://gitlab.com/mayan-edms/mayan-edms)) `Apache-2.0` `Python`
 - [Paperless-ng](https://github.com/jonaswinkler/paperless-ng) - A fork of paperless, adding a new interface and many other changes under the hood. Scan, index, and archive all of your paper documents. `GPL-3.0` `Python`
 - [Papermerge](https://www.papermerge.com) - Open Source Document Management System focused on scanned documents (electronic archives). Features file browsing in similar way to dropbox/google drive. OCR, full text search, text overlay/selection. ([Source Code](https://github.com/ciur/papermerge)) `Apache-2.0` `Python`
-- [paper{s}pace](https://dedicatedcode.com/projects/) - a small web application to manage all your offline documents. Provides a searchable storage for your documents and reminds you of upcoming tasks. ([Source Code](https://gitlab.com/dedicatedcode/paperspace)) `MIT` `Java`
+- [paper{s}pace](https://dedicatedcode.com/projects.html) - a small web application to manage all your offline documents. Provides a searchable storage for your documents and reminds you of upcoming tasks. ([Source Code](https://gitlab.com/dedicatedcode/paperspace)) `MIT` `Java`
 - [Teedy](https://teedy.io/) - (Ex SismicsDocs) Lightweight document management system packed with all the features you can expect from big expensive solutions. ([Source Code](https://github.com/sismics/docs)) `GPL-2.0` `Java`
 
 
@@ -1199,10 +1200,8 @@ _See also: [List of streaming media systems - Wikipedia](https://en.wikipedia.or
 - [Anchr](https://anchr.io) - Anchr is a toolbox for tiny tasks on the internet, including bookmark collections, URL shortening and (encrypted) image uploads. ([Source Code](https://github.com/muety/anchr)) `GPL-3.0` `Nodejs`
 - [Anuko](https://www.anuko.com/time_tracker/index.htm) - Anuko provides simple time and project tracking on a selfhosted basis. ([Demo](https://timetracker.anuko.com/), [Source Code](https://github.com/anuko/timetracker)) `Other` `PHP`
 - [asciiflow](https://asciiflow.com/) - Flow Diagram Drawing Tool. ([Source Code](https://github.com/lewish/asciiflow)) `MIT` `Nodejs`
-- [Cachet](https://cachethq.io/) - An open source status page system for everyone. ([Demo](https://demo.cachethq.io/), [Source Code](https://github.com/CachetHQ/Cachet)) `BSD-3-Clause` `PHP`
 - [CapRover](https://caprover.com/) - Build your own PaaS in a few minutes. ([Demo](https://captain.server.demo.caprover.com/#/login), [Source Code](https://github.com/caprover/caprover)) `Apache-2.0` `Docker/Nodejs`
 - [changedetection.io](https://github.com/dgtlmoon/changedetection.io) - Self-hosted tool for staying up-to-date with web-site content changes. `Apache-2.0` `Python/Docker`
-- [cState](https://github.com/cstate/cstate/) - Static status page for hyperfast Hugo. Clean design, minimal JS, super light HTML/CSS, high customization, optional admin panel, read-only API, IE8+. Best used with Netlify, Docker. ([Demo](https://cstate.mnts.lt/)) `MIT` `Go`
 - [CUPS](https://www.cups.org/) - The Common Unix Print System uses Internet Printing Protocol (IPP) to support printing to local and network printers. ([Source Code](https://github.com/apple/cups)) `GPL-2.0` `C`
 - [CyberChef](https://github.com/gchq/CyberChef) - Perform all manner of operations within a web browser such as AES, DES and Blowfish encryption and decryption, creating hexdumps, calculating hashes, and much more. ([Demo](https://gchq.github.io/CyberChef)) `Apache-2.0` `Javascript`
 - [DailyTxT](https://github.com/PhiTux/DailyTxT) - Encrypted Diary Web-App to save your personal memories of each day. Includes a search-function and encrypted file-upload. `MIT` `Python`
@@ -1232,7 +1231,6 @@ _See also: [List of streaming media systems - Wikipedia](https://en.wikipedia.or
 - [ReleaseBell](https://releasebell.com/) - Send release notifications for starred Github repos. ([Source Code](https://git.cloudron.io/cloudron/releasebell)) `MIT` `Nodejs`
 - [revealjs](https://revealjs.com) - Framework for easily creating beautiful presentations using HTML. ([Demo](https://revealjs.com/), [Source Code](https://github.com/hakimel/reveal.js)) `MIT` `Javascript`
 - [Revive Adserver](https://www.revive-adserver.com/) - World's most popular free, open source ad serving system. Formerly known as OpenX Adserver and phpAdsNew. ([Source Code](https://github.com/revive-adserver/revive-adserver)) `GPL-2.0-or-later` `PHP`
-- [s.Status](https://github.com/scolastico-dev/s.Status) - s.Status is a open source server status page written in java. ([Demo](https://status.scolasti.co/)) `MPL-2.0` `Java`
 - [SANE Network Scanning](http://sane-project.org/) - Allow remote clients to access image acquisition devices (scanners) available on the local host. ([Source Code](http://www.sane-project.org/cvs.html)) `GPL-2.0` `C`
 - [TeslaMate](https://github.com/adriankumpf/teslamate) - A powerful data logger for Tesla vehicles. `MIT` `Elixir`
 - [Trello Burndown](https://github.com/mtricht/trello-burndown) `⚠` - Easy to use SCRUM burndown chart for Trello boards. `MIT` `Go/Docker`
@@ -1285,7 +1283,6 @@ _See also: [awesome-sysadmin/IT Asset Management](https://github.com/awesome-fos
 
 **Please visit [awesome-sysadmin/Monitoring](https://github.com/awesome-foss/awesome-sysadmin#monitoring), [awesome-sysadmin/Metric and Metric Collection](https://github.com/awesome-foss/awesome-sysadmin#metric--metric-collection)**
 
-
 ### Note-taking & Editors
 
 **[`^        back to top        ^`](#)**
@@ -1741,6 +1738,15 @@ _See also: [awesome-sysadmin/Code Review](https://github.com/awesome-foss/awesom
 
 **Please visit [staticsitegenerators.net](https://staticsitegenerators.net), [staticgen.com](https://www.staticgen.com)**
 
+### Status / Uptime pages
+
+**[`^        back to top        ^`](#)**
+
+**Please visit [awesome-sysadmin/Status Pages](https://github.com/awesome-foss/awesome-sysadmin#status-pages)**
+
+- [cState](https://github.com/cstate/cstate/) - Static status page for hyperfast Hugo. Clean design, minimal JS, super light HTML/CSS, high customization, optional admin panel, read-only API, IE8+. Best used with Netlify, Docker. ([Demo](https://cstate.mnts.lt/)) `MIT` `Go`
+- [s.Status](https://github.com/scolastico-dev/s.Status) - s.Status is a open source server status page written in java. ([Demo](https://status.scolasti.co/)) `MPL-2.0` `Java`
+
 
 ### Task Management & To-do Lists