Sumble

What is Sumble?

Sumble is an open-source knowledge graph platform designed for go-to-market teams seeking to streamline prospect research and targeting. Founded by Anthony Goldbloom and Ben Hamner, the former co-founders of Kaggle, Sumble enables sales and business development professionals to run sophisticated queries across account intelligence data to identify and evaluate prospects more effectively. The platform functions as a centralized repository for account and prospect information, allowing teams to conduct deeper research before outreach. By consolidating disparate data sources into a queryable knowledge graph, Sumble helps users make more informed targeting decisions and develop stronger account intelligence strategies. Sumble serves sales teams, account executives, and go-to-market professionals who need to move beyond basic prospect lists and access richer contextual information about potential customers. The open-source model makes it accessible to teams of various sizes while allowing for customization and integration into existing workflows. The product differentiates itself through its technical foundation—built by veterans of a data platform that served hundreds of thousands of users—and its focus on enabling complex queries rather than providing pre-packaged insights. This approach gives teams the flexibility to define their own research parameters and discovery criteria based on their specific market and sales strategies.