Airwallex

Payments

Global payments infrastructure — APIs and SDKs for payments, payouts, FX, issuing, and embedded finance across 150+ countries. Mobile SDKs for Android, iOS, React Native, and Flutter. CLI and open-source wallet service (Auticuro).

Website @airwallex

paymentspayoutsfxissuingembedded-financesdkapi

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Infrastructure

Cloudflare

Connectivity cloud and edge platform. Its pay-per-crawl monetization gateway supports x402, letting agents pay for content and APIs — covered in our x402 gateway article.

DeFi

Hubble Protocol

Borrowing protocol and USDH stablecoin on Solana

Developer Tools

Solana Playground

Open-source browser IDE (SolPg) for writing, building, deploying, and testing Solana programs without a local toolchain. Live at beta.solpg.io. Supports Native Rust, Anchor, and Seahorse; powers Solana.com and Anchor official quickstarts. Remote build server + curated crate allowlist; VS Code extension and Docker self-host available.