Sellio is a cloud-based customer support platform for small teams managing conversations across websites and messaging channels. It combines an embeddable live-chat widget with a shared inbox for website chat, email, WhatsApp, Instagram, Facebook Messenger, Telegram, and SMS through Twilio; teams can also handle conversations from Slack and Discord. Staff can assign conversations, add internal notes, view customer histories, and coordinate replies. AI agents answer website-chat questions using a business's own content and can hand conversations to a person; AI replies are limited to website chat, while other channels are handled by people. Sellio also includes ticket management, routing rules, workflow automation, saved replies, customer profiles, feedback tools, and support analytics. It is designed for SaaS businesses, online shops, and other small teams that support customers. A free plan is available, while paid plans add seats, channels, automation, and AI allowances.