Scylla vs Percona Server for MongoDB: What are the differences?
Scylla: 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 Server for MongoDB: Open source, drop-in replacement for the MongoDB. It is a free, enhanced, fully compatible, open source, drop-in replacement for the MongoDB Community Edition that includes enterprise-grade features and functionality. Its storage engine options and enterprise-grade functionality provide enterprises with far greater flexibility for managing their database infrastructures.
Scylla and Percona Server for MongoDB belong to "Databases" category of the tech stack.
Scylla and Percona Server for MongoDB are both open source tools. Scylla with 5.34K GitHub stars and 628 forks on GitHub appears to be more popular than Percona Server for MongoDB with 92 GitHub stars and 31 GitHub forks.