Awesome Selfhosted - Ticketing and URL Shortners

Ticketing

Bugzilla - General-purpose bugtracker and testing tool originally developed and used by the Mozilla project. MPL-2.0 Perl

Bumpy Booby - Simple, responsive and highly customizable PHP bug tracking system. (Source Code) MIT PHP

django-todo - django-todo is a pluggable, multi-user, multi-group, multi-list todo and ticketing system - a reusable app designed to be dropped into any existing Django project. (Source Code) BSD-3-Clause Python/Django

Erxes - Marketing, sales, and customer service platform designed to help businesses attract more engaged customers. (Demo, Source Code) GPL-3.0 Javascript

Flyspray - Uncomplicated, web-based bug tracking system. (Source Code) GPL-2.0 PHP

FreeScout - Open source clone of Help Scout: email-based customer support application, help desk and shared mailbox. AGPL-3.0 PHP

Helpy - Helpy is a modern, open source helpdesk customer support application. Features include knowledgebase, community discussions and support tickets integrated with email. (Demo, Source Code) MIT Ruby

HuBoard ⚠ - Instant project management for your GitHub issues (Connects directly GitHub API). MIT Ruby

MantisBT - Self hosted bug tracker, fits best for software development. (Demo, Source Code) GPL-2.0 PHP

OpenSupports - Multi language ticket system with FAQ, role management, metrics and canned response features. (Demo, Source Code) GPL-3.0 PHP

osTicket - Manage, organize and archive all your support requests and responses in one place. (Source Code) GPL-2.0 PHP

Request Tracker - An enterprise-grade issue tracking system. (Source Code) GPL-2.0 Perl

Sentry On-Premise - A powerful error tracking platform with wide language support and a robust API. (Source Code) BSD-3-Clause Python/Django

SIT - SCM-agnostic, file-based, offline-first, immutable issue tracker. (Source Code) MIT Apache-2.0 Rust

TheBugGenie - friendly project management and issue tracking tool, with extensive user rights system. (Source Code) MPL-2.0 PHP

Zammad - Easy to use but powerful open-source support and ticketing system. (Source Code) AGPL-3.0 Ruby

URL Shorteners
Before hosting one, please see shortcomings of URL shorteners.

gShort - Privacy-friendly self-hosted URL shortener. (Demo) GPL-3.0 Go

Kutt - A modern URL shortener with support for custom domains. (Source Code) MIT Nodejs

Link - A minimal, SQLite-backed URL shortener. (Demo, Source Code) GPL-3.0 Go

Link-shortener-bot ⚠ - URL shortener using a Telegram Bot. (Demo) MIT Ruby

liteshort - User-friendly, actually lightweight, and configurable URL shortener. (Demo) MIT Python

Lstu - Let's SHorten That Url - Lightweight URL shortener. WTFPL Perl

Polr - Modern, minimalist, modular, and lightweight URL shortener. (Source Code) GPL-2.0 PHP

reduc.io - URL shortener service written in Scala, using Akka-Http and Redis. MIT Scala

ReducePy - URL shortener service using Tornado and Redis runs on Docker and Kubernetes. MIT Python

schort - No login, no javascript, just short links. (Demo) CC0-1.0 Python

Shlink - URL shortener with REST API and command line interface. Includes official progressive web application and docker images. (Source Code, Clients) MIT PHP

shorturl - Simple URL shortener with very tiny URLs. (Demo) MIT Go

Simple-URL-Shortener - KISS URL shortener, public or private (with account). Minimalist and lightweight. No dependencies. (Demo) MIT PHP

Simply Shorten - A simple URL shortener that just shortens links. MIT Java

url-shortener ⚠ - Shitty url shortener, emoji and AI powered. MIT Nodejs

YOURLS - YOURLS is a set of PHP scripts that will allow you to run Your Own URL Shortener. Features include password protection, URL customization, bookmarklets, statistics, API, plugins, jsonp. (Source Code) MIT PHP