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NitroStack vs Sellio: Features, Pricing & Which Is Better (2026)

A side-by-side comparison of NitroStack and Sellio — features, pricing, and ideal use cases — to help you decide which AI tool fits your workflow.

NitroStack logo

NitroStack

NitroStack

Freemium

Full-stack MCP platform to build, test and deploy production MCP servers and apps, with a TypeScript SDK, desktop IDE and serverless hosting.

Key features

  • NitroStack SDK: TypeScript-first, type-safe framework for MCP servers with declarative decorators, Zod validation and built-in enterprise auth.
  • NitroStudio IDE: Desktop IDE for MCP development with a visual tool inspector, AI chat, Ops Canvas and voice mode.
  • NitroCloud Hosting: Serverless MCP hosting that deploys from GitHub with sub-2-second boot, scale-to-zero, auto-scaling and automatic SSL.
  • NitroChat: White-label, multi-provider AI chat client for MCP servers with full branding control.
  • API to MCP Conversion: Turns existing APIs into MCP servers and visualizes AI reasoning during testing.
  • Enterprise Security: AES-256, JWT auth, RBAC, audit logs and custom SLAs on higher tiers.

Best for

  • Production MCP Servers: Build and ship MCP servers with typed tools, resources and prompts.
  • Wrapping Existing APIs: Expose internal REST APIs to AI agents as MCP servers.
  • Debugging MCP Tools: Inspect and test tool calls visually before release.
  • Serverless Agent Backends: Host MCP workloads that scale to zero during idle periods.
  • White-label Agent Chat: Ship a branded chat front end for customers on top of your MCP servers.
View NitroStack details
Sellio logo

Sellio

Sellio

Freemium

Sellio is an AI customer support platform that unifies live chat, WhatsApp, Instagram, Telegram and email in one shared inbox with optional AI agents.

Key features

  • Shared Inbox: One inbox for website chat, WhatsApp, Instagram, Telegram and email, keeping every reply, note and handoff in a single thread.
  • Live Chat Widget: Embed a brand-matched chat widget on any site with one snippet and capture visitor context up front.
  • AI Support Agent: Train an agent on your site, docs and FAQs so it answers first on website chat and hands off to a teammate without losing context.
  • Workflow Automations: Build routing rules, chat triggers and task automations to assign and escalate conversations automatically.
  • Ticketing: Turn a conversation into a ticket, assign it and keep the full history as work continues.
  • Support Analytics: Track volume, response time, CSAT, automation and AI resolution rates, with scheduled reports on higher plans.
  • Voice Replies: Let the AI agent answer with a custom voice inside the website widget on the Plus plan.
  • Cost Control for AI: Included monthly AI credits with optional top-ups so teams decide when and how much to spend on AI.

Best for

  • Ecommerce Support: Run live chat on a Shopify store in the same inbox as WhatsApp, Instagram and email.
  • Hospitality Front Desk: Handle guest messages from WhatsApp, Instagram and website chat in one inbox for front desk and ops.
  • SaaS Customer Success: Offer website chat first with other channels alongside it for a single team inbox.
  • Agency Client Support: Give an agency team a shared inbox to assign, note and resolve client conversations together.
  • AI-First First Response: Deploy an AI agent to answer common questions and escalate complex ones to humans.
  • Help Desk Ticketing: Raise work from a customer conversation, assign it and keep history for follow-up.
View Sellio details