Top Open Source LLM Application Frameworks Tools in 2026
A curated collection of the 3 best free and open-source LLM Application Frameworks tools in 2026. Compare features, GitHub stars, tech stacks, and self-hosted software.
Langflow
Low-code AI builder for agentic and RAG applications
Stars153,727Last commit12d agoLicenseMITCopilotKit
Enterprise-ready frontend stack for AI agents
Stars37,068Last commit10d agoLicenseMITAgno
Self-driving agent platform for your cloud
Stars41,939Last commit10d agoLicenseApache-2.0
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Showing 3 of 3 open-source tools