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).

KISS URL shortener, public or private (with account). Minimalist and lightweight. No dependencies. (Demo).

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

Lightweight link shortener written in Rust, with features such as caching, spambot protection and phishing detection. (Demo).

User-friendly, actually lightweight, and configurable URL shortener. (Source Code).

Modern URL shortener with support for custom domains and custom URLs. (Demo, Source Code).

A KISS, single-user URL shortener that runs in just one container.

Create QR Codes, embeddable link previews for your website and crawls/scrapes metadata. (Demo).

A super-minimal link shortening service written in pure C, focusing on small executable size, portability, and ease of configuration. (Demo, Source Code).

Simple, lightning-fast URL shortener with no bloat (fork of simply-shorten).

Fast, lightweight, resource-efficient, compiled URL shortener.

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