Brett Chalupa

Software dev & creative dabbler

@brettchalupa 398 X followersFirst product launched 4y ago

Total monthly visits: 8.1K; Down39.7%MoMSep 2026Only Usagi Engine has traffic data
Public revenue: Undisclosed; No public revenue across products
Products: 2; Since Oct 2022
Latest launch: 6mo ago; Usagi Engine8.1K visits/mo

100% full-depth creator dossier open: complete product portfolio, 12-month combined traffic & MRR curves, shipping cadence, and timeline events.

Traffic

Portfolio · Last 12 months

Monthly visits

Products and research metrics
Product	Tagline	Category	Visits · Sep	MoM	Launched	Revenue	Actions
Usagi EngineOSSusagiengine.comUsagi - Simple 2D Game Engine for Rapid Prototyping	Usagi - Simple 2D Game Engine for Rapid Prototyping	Game Development	8.1K	Down39.7%	2026-05	Undisclosed
ProjectbookOSSprojectbook.code.brettchalupa.comOver 100 free project ideas for learning how to program with detailed specifications and mock-ups.	Over 100 free project ideas for learning how to program with detailed specifications and mock-ups.	Coding Education	—	—	2022-10	Undisclosed

Launches, marketing, revenue milestones, and pricing/plan/positioning changes across products

Nov 3 · 12d ago
- Usagi Engine Product format no longer mentioned: CLIFeatures
  cli→—
May 19 · 6mo ago
- Usagi Engine launchedNew product
Oct 17, 2022 · 4y ago
- Projectbook launchedNew product