Dify
Leading#2 in Open sourcehigh confidence
The most-starred open-source LLM-app platform (150k★) — build a support bot with RAG and agents grounded in your own product docs. Highest adoption in this list, though general-purpose.Our read
Why it ranks #2
At roughly 150.1k GitHub stars and 23.7k forks, Dify has by far the largest OSS adoption signal here and appears in multiple open-source agent roundups, though it is general-purpose rather than a helpdesk.Here is the catch
not a complete ticketing or omnichannel support desk
self-hosted upgrades and workers add operational complexity
model and vector-service costs remain external
Does this well
very large ecosystem and rapid development
fast route to a document-grounded support bot
flexible deployment across cloud, VPC and self-hosting
Pricing
Checked by hand on 2026-07-23. Prices in this category change often — if this looks wrong, it probably is.
Key features
visual LLM workflows and agentsRAG knowledge basesmulti-model and tool integrationsAPI and web-app deployment
Quick facts
More in this area
The rest of the Open source column.- 1ChatwootThe recognized leader in open-source customer support (34.7k★) — a self-hostable omnichannel inbox (chat, email, WhatsApp, social) and the de-facto Intercom/Zendesk alternative, with AI assist.
- 3RasaThe mature conversational-AI framework (21.3k★) for teams that want full control over intent, dialogue, and on-prem deployment — a favorite in regulated industries.
- 4BotpressA popular open-source chatbot builder (14.8k★) with a visual flow editor and LLM reasoning — good for custom support conversation flows.
- 5TypebotAn open-source conversational form/chatbot builder (10.2k★) for embeddable support and lead-capture flows on websites and apps.
- 6huabeitech/agent-deskSelf-hosted Go helpdesk pairing a knowledge-base AI agent with an agent workspace, ticket workflows and handoff when retrieval is too weak.
- 7Hesper-Labs/owlySelf-hosted support agent covering WhatsApp, email and Twilio voice calls, merging each customer's channels into one profile and conversation history.