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Kolmos
One database engine for MongoDB, PostgreSQL & MySQL
Kolmos is an explanation-first database engine written in Rust that unifies MongoDB (:27018), PostgreSQL (:5433), and MySQL (:3306) wire protocols. It delivers zero-RAM-bloat secondary indexing with 1.6x–2.1x better columnar compression than Parquet-zstd, storing directly to Cloudflare R2 at 90% lower cloud storage cost.
Top comment
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! 🚀
About Kolmos on Product Hunt
“One database engine for MongoDB, PostgreSQL & MySQL”
Kolmos was submitted on Product Hunt and earned 2 upvotes and 1 comments, placing #148 on the daily leaderboard. Kolmos is an explanation-first database engine written in Rust that unifies MongoDB (:27018), PostgreSQL (:5433), and MySQL (:3306) wire protocols. It delivers zero-RAM-bloat secondary indexing with 1.6x–2.1x better columnar compression than Parquet-zstd, storing directly to Cloudflare R2 at 90% lower cloud storage cost.
On the analytics side, Kolmos competes within Developer Tools, Tech and Database — topics that collectively have 1.2M followers on Product Hunt. The dashboard above tracks how Kolmos performed against the three products that launched closest to it on the same day.
Who hunted Kolmos?
Kolmos was hunted by Punit. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Kolmos including community comment highlights and product details, visit the product overview.