Dex is described as 'Personal CRM designed to be much easier than a sales CRM. Dex reminds you to keep in touch with the people you care about. Easily visualize, understand, and manage all your relationships for free' and is a CRM system in the office & productivity category. There are more than 25 alternatives to Dex for a variety of platforms, including iPhone, Web-based, iPad, SaaS and Android apps. The best Dex alternative is Monica, which is both free and Open Source. Other great apps like Dex are EteSync, Nextcloud Contacts, Moments and Clay.
Nat is a personal CRM that helps CEOs, founders and consultants to stay in touch with their network by figuring out who they're losing touch with automatically based on their data.
Knei is a service to keep in touch with people in a regular and empathetic way. It’s goal is to assist a person in building lasting relationships with individual connections.
