APIs & Integrations
Payments, messaging, customer data, and integration platforms. 19 tools reviewed by verified GitHub developers.
Editorial Top Picks
Resend
Email API built for developers — React-Email, deliverability-first, polished DX
View review →Mux
Video infrastructure for developers — encoding, streaming, and analytics in one API
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Payments API that became the default for software companies
Email API built for developers — React-Email, deliverability-first, polished DX
Video infrastructure for developers — encoding, streaming, and analytics in one API
Open-source WebRTC infrastructure for real-time audio, video, and data
Transactional-email specialist with deliverability obsession and clean API
Merchant of record for SaaS — handles tax, compliance, and global payments
Video encoding and delivery at Cloudflare edge — flat per-minute pricing
SMS, voice, WhatsApp, email — communication APIs at scale
Unified payments platform for global enterprises and high-volume merchants
Instant GraphQL APIs over Postgres and other databases
Twilio-owned email infrastructure — the volume leader for transactional and marketing
Real-time video API for embedded calls, telehealth, and prebuilt experiences
Merchant of record for digital products — lighter and faster than Paddle
Global real-time video and voice infrastructure with SDK breadth and low-latency network
Customer data infrastructure — one analytics SDK to send everywhere
European-origin SMS, WhatsApp, voice — strong on local carriers across Europe and APAC
Email API focused on developer flexibility, Sinch-owned, strong free tier
Cost-optimized SMS and voice API — Twilio alternative with strong unit economics
Enterprise communications API — formerly Nexmo, now part of Ericsson
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