head to head/Design Tools

Once UI vs Resolved Markets

Neck and neck on boosts. Profiles, pricing and deals below.

Once UI

Once UI: The open-source design system for indie creators

community boosts

⚡ 0

pricing

Paid

what it is

An open-source design system for indie creators built with Next.js and Supabase. Ship fully functional apps with copy-paste React code: components, blocks, layouts and pages.

Resolved Markets

Resolved Markets: Polymarket Orderbook Data API & Backtesting

community boosts

⚡ 0

pricing

Freemium

what it is

Polymarket historical orderbook data API: 4.2B+ orderbook snapshots across 184 recurring and event series since March 2026. REST, WebSocket, MCP and a backtester. Free tier available.