Percona vs Scylla: What are the differences?
Developers describe Percona as "With more than 3,000 customers worldwide, Percona delivers enterprise-class solutions for both MySQL and MongoDB across traditional and cloud-based platforms". Percona delivers enterprise-class software, support, consulting and managed services for both MySQL and MongoDB across traditional and cloud-based platforms. On the other hand, Scylla is detailed as "Next Generation Cassandra". Real-time big data database, with scale-up performance of 1,000,000 IOPS per node, scale-out to 100s of nodes and 99 latency of less than 1 msec.
Percona and Scylla belong to "Databases" category of the tech stack.
Scylla is an open source tool with 5.18K GitHub stars and 615 GitHub forks. Here's a link to Scylla's open source repository on GitHub.