Apache 2.0 — open protocol with patent protection
All public QAIL crates are released under the Apache License, Version 2.0. You are free to use, copy, modify, and distribute QAIL in any project — commercial or otherwise — with full patent protection for all contributors and users.
Apache 2.0 is the license of choice for protocol standards. It's used by gRPC, Kubernetes, TensorFlow, and hundreds of other foundational projects.
View LICENSE on GitHub →Every contributor automatically grants a patent license. Users are protected from patent claims on contributed code.
QAIL aims to be a standard for AST-native database access. Standards need the trust of Apache 2.0's legal framework.
Apache 2.0 is the expected license for CNCF, Apache Foundation, and Linux Foundation projects.
| qail-core | AST builder, transpiler, migration engine | Apache-2.0 |
| qail-pg | PostgreSQL driver with binary protocol | Apache-2.0 |
| qail-gateway | HTTP/WS API gateway with auto-REST | Apache-2.0 |
| qail-cli | CLI for migrations and codegen | Apache-2.0 |
| qail-redis | Redis driver | Apache-2.0 |
| qail-qdrant | Qdrant vector database driver | Apache-2.0 |
| qail-encoder | Wire protocol encoder | Apache-2.0 |
| qail-lsp | Language server for .qail files | Apache-2.0 |
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