# VideoSDK > VideoSDK provides developer tools and low-latency, real-time communication > infrastructure for building voice, video, live streaming, and AI agent > experiences into web and mobile apps. It offers customizable APIs and SDKs > with global scale, high availability, and full control over the media stack. ## Products - Real-Time Communication: Audio/video calling APIs and SDKs for web, mobile, and desktop. https://www.videosdk.live/audio-video-conferencing - AI Voice Agent: Build production-grade real-time voice AI agents in minutes. https://www.videosdk.live/ai-voice-agent - Interactive Live Streaming: Low-latency live streaming with real-time interactivity. https://www.videosdk.live/interactive-live-streaming - Real-Time Transcription: Live speech-to-text for meetings and streams. https://www.videosdk.live/real-time-transcription - SIP / Telephony: Connect calls to and from phone networks. - Prebuilt SDK: Drop-in, fully featured video conferencing UI. https://www.videosdk.live/prebuilt ## Key facts - Low-latency real-time media (as low as ~150ms). - 99.99% uptime with global infrastructure. - SDKs for JavaScript/React, React Native, Android, iOS, Flutter, and Python. - Free credits to start; no credit card required. ## Resources - Pricing: https://www.videosdk.live/pricing - Documentation: https://docs.videosdk.live - Blog: https://www.videosdk.live/blog - Code samples and examples: https://www.videosdk.live/examples - Sign up: https://app.videosdk.live/signup