Neither Google Tag Manager nor Short.io offers a free trial.
Google Tag Manager is designed for Large Enterprises, Medium Business and Small Business.
Short.io is designed for Large Enterprises, Medium Business and Small Business.
The starting price of Short.io begins at $16.66/Month when Billed Yearly, while pricing details for Google Tag Manager are unavailable.
Some top alternatives to Google Tag Manager includes Viraltag, Launch by Adobe, TagCommander, Tag Governance, Tealium iQ, Google Analytics, GingerTag, TapAnalytics, Tagmate and Scale8.
Some top alternatives to Short.io includes Shortly, Bitly, Rebrandly, tothe.link, ShortURL, Cutt.ly, Switchy, Linkjoy, MyLinks On Acalytica and Recut.