The best alternatives to Proltify are Basecamp, Seamless, and finish'd. If these 3 options don't work for you, we've listed a few more alternatives below.
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SeedLegals— Fundraise faster – The startup platform built for growth
Comes with iPhone, Mac and web version (https://seamless.icu). Seamless is equipped with a unique feature among other cross-platform file sharing apps: share clipboard text as well. Optimized for workflows that needs to share files or text on iOS.
finish’d is an app that helps connect people with on demand service, contact-less delivery, and rideshare providers within a single, user friendly platform. This app also provides rideshare drivers and providers with more benefits than current platforms.