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Welcome to ReactOS

Imagine running your favorite Windows applications and drivers in an open-source environment you can trust.
That's the mission of ReactOS!

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Recent News

Newsletter 101 - July 2021 news

Hello ReactOS followers! This report covers changes in the project during February-July 2021. And we definitely have some things to highlight! amd64 build is getting more stable Timo Kreuzer (tkreuzer) worked hard on various parts of the kernel and HAL, fixing issues here and there. Structured Exception Handling (SEH) support for the amd64 architecture was finished, various bugs around the kernel are fixed. A major issue with interrupt handling in HAL was also fixed in May, which finally allowed a semi-stable boot in a virtual environment.

Welcome GSoC 2021 Students!

Another year, another round of Google Summer of Code! The ReactOS Project is participating in Google Summer of Code 2021 and welcomes the selected students. He Yang is a successful student from GSoC 2020, who is going to continue his dive into user-mode ReactOS this year by working on iernonce.dll. That library is responsible for RunOnceEx, a prominent Windows feature to run multiple commands once after a system reboot. Implementing that feature will benefit software depending on it.

Newsletter 100 - January 2021 news

Hello ReactOS followers! This is an attempt to re-instate the Newsletter, which informed you about recent developments. The previous Newsletter 99 was in 2013! This month we were mostly focused on the kernel work, merging pull requests and fixing regressions. Memory manager and Common cache work Being in development for almost six month, this work by Jérôme Gardou finally landed in the master branch. This change refactors many aspects of the Section Objects feature in NT-compatible kernel, making it more compatible with Windows.

ReactOS in 2020

Despite all the turbulence, it has been quite a productive year for ReactOS. Many bugs and instabilities were resolved, many more have been introduced. This year we hired two kernel developers full-time, this happened for the first time in the project’s history. The post highlights some of the changes which may be interesting to the community. Shell changes Shell hasn’t seen much attention recently, due to most of the work being concentrated in the kernel, but there are still some useful fixes and feature implementations:

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