Quant-UX replaces 2 paid apps
One open-source tool, 2 subscriptions it can stand in for. Each pairing below is curated and verified by hand, with the honest catch spelled out. No votes, no pay-to-list.
licenseGPL-3.0
runsyour machine or their cloud
installUse the hosted Quant-UX signup, or run its multi-container Docker Compose stack
dataHosted projects in Quant-UX's service; self-hosted prototypes and tests in MongoDB with uploaded images in mapped data directories
setupSelf-hosting needs several containers plus MongoDB, SMTP, a JWT secret, WebSocket URL and reverse-proxy/TLS configuration
facts verified 2026-08-11
Browser prototypes, collaboration, user tests, and analytics in one product; weaker than Figma for pixel-perfect design systems.
the catchIt is primarily a prototyping and user-testing tool, not a production-grade vector editor and design-system workspace on Figma's level.
the verdict →all Figma alternatives →
A useful free prototype-and-test workspace with collaboration and analytics; less capable for production-grade visual systems.
the catchIt is a prototype-and-research workspace, not a full native vector design and reusable-library replacement for Sketch.
the verdict →all Sketch alternatives →last updated 2026-08-11 · up to $384/yr replaced · no votes, no pay-to-list
