Commercial / Proprietary
Agentforce (Salesforce)
Agents built on Salesforce’s CRM data, flows, and business logic, with prebuilt templates for sales, service, marketing, and commerce
Sema4.ai Studio
Natural-language “Runbooks” instead of code, with prebuilt enterprise-app integrations (SharePoint, SAP, Snowflake) plus MCP
n8n
Visual workflow automation with AI agent steps. Self-hostable, but source-available under its Sustainable Use License rather than open source
Open Source / Provider-agnostic
Langflow
Visual builder for agents and LLM workflows; MIT-licensed
Legacy / Decommissioned
Flowise
Visual drag-and-drop builder for LLM apps and agents, wound down in 2026: code freeze July 29, repository archived August 13, end of life August 31. Code remains Apache 2.0 and forkable