Newer
Older
[](https://travis-ci.org/keystone-engine/keystone)
[](https://semaphoreci.com/aquynh/keystone)
[](https://ci.appveyor.com/project/aquynh/keystone)
Keystone is a lightweight multi-platform, multi-architecture assembler framework.
It offers some unparalleled features:
- Multi-architecture, with support for Arm, Arm64 (AArch64/Armv8), Ethereum Virtual Machine, Hexagon, Mips, PowerPC, Sparc, SystemZ & X86 (include 16/32/64bit).
- Implemented in C/C++ languages, with bindings for Masm, C#, PowerShell, Perl, Python, NodeJS, Ruby, Go, Rust, Haskell, VB6 & OCaml available.
- Native support for Windows & \*nix (with Mac OSX, Linux, *BSD & Solaris confirmed).
- Thread-safe by design.
- Open source - with a dual license.
Keystone is based on LLVM, but it goes much further with [a lot more to offer](/docs/beyond_llvm.md).
Further information is available at http://www.keystone-engine.org
License
-------
Keystone is available under a dual license:
- Version 2 of the GNU General Public License (GPLv2). (I.e. Without the "any later version" clause.).
License information can be found in the [COPYING file](COPYING) and the [EXCEPTIONS-CLIENT file](EXCEPTIONS-CLIENT).
This combination allows almost all of open source projects to use Keystone without conflicts.
- For commercial usage in production environments, contact the authors of Keystone to buy a royalty-free license.
See [LICENSE-COM.TXT](LICENSE-COM.TXT) for more information.
Compilation & Docs
------------------
See [COMPILE.md](docs/COMPILE.md) file for how to compile and install Keystone.
More documentation is available in [docs/README.md](docs/README.md).
Contact
-------
[Contact us](http://www.keystone-engine.org/contact/) via mailing list, email or twitter for any questions.
Contribute
----------
Keystone is impossible without generous support from [our sponsors](/SPONSORS.TXT). We cannot thank them enough!
[CREDITS.TXT](CREDITS.TXT) records other important contributors of our project.
If you want to contribute, please pick up something from our [Github issues](https://github.com/keystone-engine/keystone/issues).
We also maintain a list of more challenged problems in a [TODO list](https://github.com/keystone-engine/keystone/wiki/TODO).