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Top Rated AI Agent Builder Software with Free

Last updated: June 2026

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Gumloop logo

No-code AI platform for business automation

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Gumloop is a no-code platform for building and hosting AI-powered business automations via specialized agents. It offers pre-built agents for data analysis, customer support, CRM management, meeting prep, and call analysis deployable in minutes. Gumloop ensures enterprise-grade security with SOC 2 Type II certification, role-based access control, virtual private cloud deployments, and integration with tools like Slack and Microsoft Teams.

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Agentforce logo

AI agent platform for autonomous business tasks

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Agentforce is an enterprise AI platform enabling organizations to deploy autonomous agents for customer and employee support. It features the Atlas Reasoning Engine for decision-making, Agentforce Builder for development/testing, and Agent Script for workflows with flexible reasoning. It includes Agentforce Voice for conversational interactions and Intelligent Context for processing unstructured data sources.

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n8n.io logo

Empower tech with limitless AI workflow automation.

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Flexible AI workflow automation for technical teams. From prototype to production and beyond.

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Kore logo

Software for creating AI-enabled conversational assistants

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Kore.ai is a cloud-based and on-premise conversational AI platform designed to help businesses of all sizes streamline developer collaboration, bot lifecycle management, API integration, intent recognition, natural language processes (NLP), and other operations.

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StackAI logo
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No-code platform for enterprise AI agents

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StackAI is an enterprise AI platform that enables organizations to deploy AI agents through a drag-and-drop no-code interface. The platform features agentic workflows, multi-tenant deployment options including VPC and on-premise configurations, and integration with over one hundred enterprise systems. It includes security certifications such as HIPAA, GDPR, SOC 2 Type II, and ISO 27001, along with governance features like audit logs and human-in-the-loop oversight for automated decision points.

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Retell AI logo
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AI voice agent platform for phone automation

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Retell AI is an artificial intelligence voice agent platform designed for phone call automation. The platform features real-time conversational capabilities with low-latency speech recognition, enabling natural phone interactions for customer support, lead qualification, and receptionist functions. It includes call transfer functionality, appointment booking, knowledge base integration, and batch calling capabilities with branded caller identification and verified phone numbers.

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Zapier Agents logo
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Custom AI agents for automated business tasks

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Zapier Agents is an AI automation platform that enables users to create custom AI assistants to perform tasks across more than eight thousand integrated applications. The platform connects to live business data and allows agents to handle various functions including lead enrichment, customer support responses, meeting preparation, and content creation. Agents can operate autonomously to complete workflows and sync automatically with updated data from connected systems.

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Kalcend logo
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AI agent builder for support sales and operations

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Kalcend is a no-code platform that enables users to create autonomous AI agents through text prompts rather than traditional coding or workflow building. The software deploys AI agents across multiple channels including WhatsApp, Slack, voice calls, web chat widgets, and email to handle customer support, sales outreach, and internal operations. It includes a sandboxed testing environment and integrates with over forty business tools such as HubSpot, Google Calendar, Stripe, and Notion.

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Onpilot logo
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AI agent platform for workflow automation

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Onpilot is an AI agent platform that connects to enterprise systems including ERPs, CRMs, support tools, and APIs to automate business workflows. The platform features multi-tenant deployment options, human-in-the-loop approval workflows, and security controls with audit logging and granular permissions. Onpilot integrates with tools such as Salesforce, Slack, Microsoft Teams, and Jira, and can be deployed as white-label agents within websites, dashboards, or messaging platforms.

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Flowise logo
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Platform for building AI agents and workflows

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Flowise is an open-source generative AI development platform that enables users to build AI agents and agentic systems through a visual interface. The platform offers modular building blocks for creating multi-agent systems, chatbots, and chat assistants with features including workflow orchestration, tool calling, and knowledge retrieval from various data sources. Flowise supports integration through APIs, SDKs, and embedded chat widgets, and includes execution traces with observability tools.

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