Yes, both Slides and CustomShow offer a Free Trial.
Slides is designed for Individuals, Large Enterprises, Medium Business and Small Business.
CustomShow is designed for Large Enterprises and Medium Business.
Pricing for Slides Starts at $99/Year whereas for CustomShow Starts at $26/User/Month when Billed Yearly.
Some top alternatives to Slides includes Slides, Slidebean, Beautiful.AI, Haiku Deck, Microsoft PowerPoint, YouPitch.Me, Deckbuildr, Slideoo, TalkingDeck and SlidesAI.
Some top alternatives to CustomShow includes iPresent, Zoho Show, Slides, Slidebean, Prezi Business, Google Slides, Sizle, Pitch, Microsoft PowerPoint and Powerslide.