Hey Product Hunt community! 👋 I'm Punit, founder of KOLMOS. Like many developers, I was tired of managing multiple expensive database stacks: MongoDB Atlas for document storage, RDS PostgreSQL for relational data, and Snowflake/ClickHouse for analytics — paying hundreds of dollars in cloud bills every month and struggling with ETL pipelines. We built KOLMOS to fix this. KOLMOS is a single unified database engine written in Rust that: 🍃 Speaks MongoDB BSON wire (Port 27018) 🐘 Speaks PostgreSQL SQL wire (Port 5433) 🐬 Speaks MySQL wire (Port 3306) 🗜️ Delivers 1.6x–2.1x better columnar compression than Parquet-zstd ☁️ Stores directly to Cloudflare R2 with zero expensive EBS disk cost We are opening our Private Beta today with a Free Forever 10 GB Developer Tier. Would love to hear your feedback, thoughts, and questions! 🚀

Kolmos

One database engine for MongoDB, PostgreSQL & MySQL

One database engine for MongoDB, PostgreSQL & MySQL