Loyverse POS is the free POS (free point-of-sale) app perfect for your retail store, cafe, bar, restaurant, coffee shop, beauty salon, kiosk, food truck, car wash or individual business. No ads, no credit card required, no contracts.
Kyte is an all-in-one point of sale system that empowers small businesses with tools for streamlined operations and online, in-person, and social media sales.
OrderSprinter is a POS software for restaurants, implemented as a webservice so that almost every end user device can be used. It's is freeware, licensed by CC (BY-NC-ND). On the server-side a webserver with PHP and a db (MySql or MariaDb) is needed.
Cercle CRM is a collaboration tool that organizes your contacts or your tasks into visual boards. You can create People Board or Project Board. In People Board, you can track your deals, your clients, your marketing automation.
Comments
Noting that FamilySearch is a family tree site, not a DNA test site.
For existing DNA clients, another option is to upload their existing results to open-source databases.
This link discusses the advantages, and also supplies worthwhile cautions.
https://blog.genomelink.io/posts/open-source-dna-databases