Add new "Terminal Sharing" section and new sish proxy tool.

README.md

@@ -86,6 +86,7 @@ See [Contributing](.github/CONTRIBUTING.md).
     - [Localization](#localization)
   - [Static site generators](#static-site-generators)
   - [Task management/To-do lists](#task-managementto-do-lists)
+  - [Terminal Sharing](#terminal-sharing)
   - [Ticketing](#ticketing)
   - [URL Shorteners](#url-shorteners)
   - [VPN](#vpn)
@@ -1210,6 +1211,7 @@ See also _[Monitoring](#monitoring)_
 - [Pound](http://www.apsis.ch/pound/) - Light-weight reverse proxy and load balancer for HTTP/HTTPS. `GPL-2.0` `C`
 - [Privoxy](http://www.privoxy.org) - Non-caching web proxy with advanced filtering capabilities for enhancing privacy, modifying web page data and HTTP headers, controlling access, and removing ads and other obnoxious Internet junk. `GPL-2.0` `C`
 - [Redbird](https://github.com/OptimalBits/redbird) - A modern reverse proxy for node that includes cluster, HTTP2, LetsEncrypt, and Docker support. `BSD-2-Clause` `Javascript`
+- [sish](https://github.com/antoniomika/sish) - Open source serveo/ngrok alternative providing HTTP(S)/WS(S)/TCP tunnels to localhost using only SSH. `MIT` `Go`
 - [socks5-proxy-server](https://github.com/nskondratev/socks5-proxy-server) - SOCKS5 proxy server with built-in authentication and Telegram-bot for user management and user statistics on data spent (handy when you pay per GB of data). It is dockerised and simple to install. `Apache-2.0` `NodeJS`
 - [SOCKS5Engine](https://github.com/VeeSecurity/SOCKS5Engine) - Lightweight & resource-efficient SOCKS5 proxy server, optimized for high-load. `AGPL-3.0` `Go`
 - [Squid](http://www.squid-cache.org/) - Caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. It reduces bandwidth and improves response times by caching and reusing frequently-requested web pages. ([Source Code](https://code.launchpad.net/squid)) `GPL-2.0` `C`
@@ -1379,6 +1381,13 @@ See https://staticsitegenerators.net and https://www.staticgen.com
 - [Volition](https://github.com/usevolition/volition) - Opinionated open-source task management. `MIT` `Ruby`
 - [Wekan](https://wekan.github.io/) - Open-source Trello-like kanban. ([Demo](https://oasis.sandstorm.io/appdemo/m86q05rdvj14yvn78ghaxynqz7u2svw6rnttptxx49g1785cdv1h), [Source Code](https://github.com/wekan/wekan)) `MIT` `Nodejs`
 
+## Terminal Sharing
+
+**[`^        back to top        ^`](#)**
+
+- [GoTTY](https://github.com/yudai/gotty) - Simple command line tool that turns your CLI tools into web applications. `MIT` `Go`
+- [tmate](https://tmate.io/) - Instant terminal sharing. `ISC` `C`
+
 ## Ticketing
 
 **[`^        back to top        ^`](#)**