Startups Directory

ClickHouse is an open-source columnar database management system optimized for real-time online analytical processing (OLAP), enabling complex SQL queries at massive scale with sub-second latency. It achieves hundreds of millions of rows per second throughput—100x faster than competing systems—through its vectorized Merge Tree storage engine and native support for distributed, replicated architectures. The platform serves enterprises handling massive analytical workloads, from event ingestion to interactive dashboards, and is used by companies like Microsoft, Walmart, Tesla, and eBay to process billions of events per minute.

Veza is the authorization platform for data security built on a graph-based architecture that maps access permissions across 300+ integrations in hybrid and multi-cloud environments. It enables enterprises to visualize, manage, and control granular access down to specific data objects, tables, and cloud resources. Used by Global 500 companies like Expedia, Blackstone, and Wynn Resorts to solve privileged access monitoring, non-human identity security, and identity governance challenges. Recently acquired by ServiceNow in December 2025 at a $1B-$1.5B valuation.