Linktree - Connect your audience to all of your content with just one link.
YOURLS - YOURLS is a website that contains all the tools you need to create and launch your very own URL shortener. URL shorteners like bitly or TinyURL are fine for public use, but they offer limited options in terms of URL customization.
Lnk.Bio - Life's a link
Anonymous URL Shortener - Anonymous URL Shortener, Referer, Anonymizer, Redirection service.
many.link - Add as many links in your Instagram bio as you want
Polr - An open source URL shortener. A great non-profit and free alternative to bit.ly, TinyURL, or goo.gl.