Composio
Managed MCP platform with 500+ pre-built integrations to SaaS apps (Slack, Notion, Linear, Stripe, GitHub, etc.) and managed OAuth/auth flows. Competes head-on with Smithery and Glama for the managed-MCP slot.
Claude Code
Terminal-first agentic coding assistant from Anthropic. Full MCP client support, codebase-aware, runs multi-step tasks autonomously.