The rule
Read the licence, per repo, per release. If resale-as-a-service is barred, install it on the client's own infrastructure and charge for the install and care plan. You're a contractor, not a reseller.
The safe spine
LibreChat, Langflow, Letta, Qdrant, LiteLLM, Supabase and RAGFlow are MIT or Apache-2.0 — safe to build on and resell.
Never rely on memory
Open WebUI's licence changed. Pin versions, save the licence text, and re-check before every install you'll resell.
Want the full playbook?
The free 2026 AI Revenue Playbook turns these shifts into a plan with costs, scripts and pricing templates.