NEW on the list. 

Castro lets you track lots of podcasts at once without getting overwhelmed.

Website: supertop.co/castro
Cost: Free
Availability: Download iOS app
Category: 01: Web resources (and apps)

Top 100 Tools for Personal & Professional Learning 2018: –
Top 100 Tools for Workplace Learning 2018: 73
Top 100 Tools for Education 2018: –

Past Overall Rankings
2017: –    2016: –    2015: –    2014: –    2013: –    2012: –    2011: –    2010: –    2009: –    2008: –    2007: –

Comments from those who selected Castro as one of their Top Tools

“I devour podcasts, mostly in the car and on airplanes. Castro is my latest iOS podcast app due mostly to its slick content organization.” JD Dillon, 2018