Static Web Site Building Framework For Groovy
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Grain is a lightweight and yet powerful static website generator for Groovy which purpose is to make demanding site implementation intuitive and enjoyable. Grain framework is equally well-suited for any static website, whether it is a complex company site or a neat blog. The framework applies simple website building concepts and allows to develop rapidly by making and seeing changes on the fly.

Getting Started

For further information please visit Grain project website.

Grain Community

There are many ways of getting involved:

  • Mailing List - reach us or ask the community for help
  • Issue Tracker - make Grain better by suggesting improvements
  • Twitter - keep up with the latest Grain news and announcements


Any person or company wanting to contribute to Grain Framework should follow the following rules in order to their contribution being accepted.

Sign your Work

We require that all contributors "sign-off" on their commits. This certifies that the contribution is your original work, or you have rights to submit it under the same license, or a compatible license.

Any contribution which contains commits that are not Signed-Off will not be accepted.

To sign off on a commit you simply use the --signoff (or -s) option when committing your changes:

$ git commit -s -m "Adding a new widget driver for cogs."

This will append the following to your commit message:

Signed-off-by: Your Name <>

By doing this you certify the below:

Developer's Certificate of Origin 1.1

If you wish to add the signoff to the commit message on your every commit without the need to specify -s or --signoff, rename .git/hooks/commit-msg.sample to .git/hooks/commit-msg and uncomment the lines:

SOB=$(git var GIT_AUTHOR_IDENT | sed -n 's/^\(.*>\).*$/Signed-off-by: \1/p')
grep -qs "^$SOB" "$1" || echo "$SOB" >> "$1"

Developer's Certificate of Origin

To help track the author of a patch as well as the submission chain, and be clear that the developer has authority to submit a patch for inclusion into this project please sign off your work. The sign off certifies the following:

Developer's Certificate of Origin 1.1

By making a contribution to the project, I certify that:

(a) The contribution was created in whole or in part by me and I
    have the right to submit it under the open source license
    indicated in the file; or

(b) The contribution is based upon previous work that, to the best
    of my knowledge, is covered under an appropriate open source
    license and I have the right under that license to submit that
    work with modifications, whether created in whole or in part
    by me, under the same open source license (unless I am
    permitted to submit under a different license), as indicated
    in the file; or

(c) The contribution was provided directly to me by some other
    person who certified (a), (b) or (c) and I have not modified

(d) I understand and agree that this project and the contribution
    are public and that a record of the contribution (including all
    personal information I submit with it, including my sign-off) is
    maintained indefinitely and may be redistributed consistent with
    this project or the open source license(s) involved.

(e) I hereby grant to the project, SysGears, LLC and its successors; 
    and recipients of software distributed by the Project a perpetual,
    worldwide, non-exclusive, no-charge, royalty-free, irrevocable
    copyright license to reproduce, modify, prepare derivative works of,
    publicly display, publicly perform, sublicense, and distribute this
    contribution and such modifications and derivative works consistent
    with this Project, the open source license indicated in the previous
    work or other appropriate open source license specified by the Project
    and approved by the Open Source Initiative(OSI)


Grain is licensed under the terms of the Apache License, Version 2.0.