From sourcing builders to running the event
F6S is a large startup directory and application inbox for programs. BuilderBase is the branded hackathon or open call that actively sources and screens builders, with AI-assisted screening and sponsor ROI built in.
The gaps organizers hit with F6S
Active event engine vs passive application directory
Events sourcing/screening builders
A branded event that goes out and finds builders, instead of waiting for applications to arrive.
Sponsor credits, ROI, marketplace
Sponsors fund the event, hand out credits, and get a report. F6S is built around deal flow, not sponsor economics.
AI-assisted with modern UX
AI-assisted screening, in an interface built this decade.
BuilderBase vs F6S.
Everything below is checkable. Where a platform only partly covers something, we say so.
| Feature | BuilderBase | F6S |
|---|---|---|
| End-to-End Event Management | Included | Not available |
| Branded Event Page | Included | Not available |
| AI Application Screening | Included | Not available |
| Sponsor ROI Report | Included | Not available |
| Sponsor Marketplace | Included | Not available |
| Self-Serve Launch | Included | Includedfree basic |
| Accelerator / Program Mgmt | Included | Not available |
included partial not available.Based on publicly available information at the time of writing.
What it actually costs.
F6S has real scale on its side — 1.6M startups, 2.9M founders, and a well-established, free-to-join brand that many founders already have a profile on. For directory reach alone, that is an asset.
BuilderBase or F6S?
Organizers who want an active branded event that sources, screens, and judges builders, with sponsor visibility built into the experience.
Programs primarily looking to source deal flow from F6S's existing 1.6M-startup directory.
BuilderBase vs F6S: common questions.
Switching from F6S? Talk to us.
Does BuilderBase replace F6S?
Is BuilderBase free to use like F6S?
Does F6S offer sponsor ROI reporting?
Can BuilderBase help source builders the way F6S does?
Other BuilderBase comparisons.
Run your next event on BuilderBase
Free to start. €999 for a flagship event, published up front. Live in days.