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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
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shopware
Shopware 6 is an open commerce platform based on Symfony Framework and Vue and supported by a worldwide community and more than 1.500 community extensions
Depending on your needs, NextJS Commerce (Vercel) storefront + Vendure backend is a full-stack JavaScript fully-OSS option for this. It's basically ready-to-go if you have a B2C/Retail "sneaker store" type use case selling a handful of products, they have a blessed integration + demo for using Vendure but you could swap out for another backend if you liked.
https://github.com/vercel/commerce