Github Repository, Crowdin Repository
ReactOS is a free and open source operating system written from scratch. It's design is based on Windows in the same way Linux is based on Unix, however ReactOS is not linux. ReactOS looks and feels like Windows, is able to your run Windows software and your Windows drivers, and is familiar for Windows users.
Development began in 1996, as a Windows 95 clone project, and was continued as ReactOS in 1998, with the incremental addition of features of later Windows versions.
As of July 2018, ReactOS is considered alpha software, feature-incomplete but with many Windows applications already working (e.g. Adobe Reader 6.0, OpenOffice, etc) and therefore recommended by the developers only for evaluation and testing purposes.
ReactOS is released under GNU GPLv2 Open Source license, with some parts released under LGPL and BSD licenses.
Sources: Wikipedia/ReactOS & ReactOS Official Website
Subject to 
The project is being translated from English to Greek. I'm a native Greek and because of my job (programmer) English is a "must learn" language.
This is the seventh and last session that I continued working on the biggest file of the project, so far!
And the number name of the beast... rasdlg!
Other files I worked on, in this part: samsrv, serialui, setupapi, shell32 (partial)
I translated 1219 words, minus an estimated 8% for duplicates and untranslated words, which brings us to ~1121 words, for a total of 29440 words out of 37669 words. All numbers were rounded to the nearest integer (as you obviously can't translate 724.24 words).
CrowdIn project link: https://crowdin.com/project/reactos/
Github project link: https://github.com/reactos/reactos
My CrowdIn profile link: https://crowdin.com/profile/dimitrisp2
My Github profile link: https://github.com/dimitrisp2/
ReactOS is a great project, aiming to help the average Joe try a free alternative operating system, without having to change a lot of his habits. It has a long way to go though, as it is still in alpha development stage. I'm proud to translate this into Greek, as I've always been secretly supporting this project!
I have translated 1219 words (-8% for duplicates and untranslated words = ~1121 words) for a total of 29440 words out of 37669 words. I'm now translating a file used to manage various internet related stuff.
We've been planning since mid-September -if not earlier- to create a community account used as a translation blog, share our knowledge and our stats with everyone. Each one of us could do it from their own account, but having them all concentrated in one place would make it more transparent and targeted. After all, knowledge and tips are best when shared with as many people as possible, but only if they are interested in that.
Our community account, 
I will be posting a more detailed post about Aristotle, to give our community a proper welcome!
Thank you everyone for taking your time to read about my contribution. Big thanks to the 
our ruth-less Language Moderator
and our community account
If you want to support
If you also wish to support our journey as a community, you can delegate some SP to
@katerinaramm
@lordneroo
@trumpman