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PortOne (포트원)

Korean PG aggregator — one SDK across Toss, Kakao, Naver, NICE, KG Inicis.

Visit PortOne (포트원)Verify on pricing page
Free tier

Free SDK / dashboard; you only pay the underlying PG's transaction fee

  • Formerly 아임포트 (IAMPORT); v2 SDK is the current target.
  • Use when you need multiple Korean PGs without writing each integration.
  • Some advanced features (analytics, custom routing) moved to paid plans — verify first.
Alternatives

Drop-in alternatives

Solve a similar problem if you outgrow PortOne (포트원)'s free tier — or just want a second option in your back pocket.

Top pick

Toss Payments

Korea's developer-friendly PG — modern API, no setup or monthly fee.

No monthly fee; ~2.7–3.3% per card transaction (KRW)

Payments2026-05
Top pick

Stripe

The default payments API — no monthly minimum, pay per transaction.

No monthly fee; 2.9% + $0.30 per successful card charge (US)

Payments2026-05

Last verified 2026-05 · free-tier numbers shift — confirm at the pricing page before relying on a quota for a launch decision.