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OpenWrt 是一个高扩展性的针对嵌入式设备(如无线路由器)的 GNU\/Linux 版本。和其他许多路由器版本不同的是，OpenWrt是从头开始构建，全部功能可定制的路由器操作系统。例如，你可以定制你需要的功能，避免系统臃肿，比其他版本使用更新的 Linux Kernel。
OpenWrt 是什么?
OpenWrt 提供应用选择管理和一个完全可写的文件系统，代替以往的单一静态的固件。这可以使你自由的选择配置应用，为你的嵌入式设备定制适合的应用。为了开发，OpenWrt 提供一个框架不需要编译整个固件镜像就可以编译并发行一个应用。对用户而言，这意味着允许厂商从没有允许过的自由和全面的定制化。
免费和开源。本项目是一个完全免费和开源的项目，使用GPL 证书。而且项目托管在一个可以随时访问的网站，随时可以访问，下载、使用。
Free and open-source. The project is entirely free and open-source, licensed under the GPL. The project is intended to always be hosted at an easily accessible site, with full source code readily available and easy to build. Easy and free access. The project will always be open to new contributors and have a low barrier for participation. Anyone shall be able to contribute. We, the current developers, actively grant write access to anyone interested in having it. We believe people are responsible when given responsibility. Just ask and you will be able to acquire the access rights you need. Community driven. This is not about 'us' offering 'you' something, it is about everyone coming together to work and collaborate towards a common goal. OpenWrt has long been established as the best firmware solution in its class. It far exceeds other embedded solutions in performance, stability, extensibility, robustness, and design. It is the clear-cut goal of the OpenWrt developers to continue to expand development and ensure that OpenWrt is the foremost framework for innovative and ingenuitive solutions.
为了真正的理解OpenWrt，你需要阅读OpenWrt的构建系统。
What is it not?
OpenWrt is not intended to be a distribution you can load onto an embedded device and expect to do everything you want out of the box. Instead, the OpenWrt framework allows you to tailor your embedded operating system to your own particular needs. At the very least, you should add features you require to the bare OpenWrt installation by installing software packages, such as a graphical web interface that provides easy access for beginners. Installing such packages is easy to learn, but requires a minimal understanding of the OpenWrt system and some Linux skills, all of which are explained in this wiki.
Compared to other distributions, OpenWrt may also not be regarded only as "true end-user firmware". While it is used as such by many users that seek the high customisability that OpenWrt provides, there are also other distributions (many based on OpenWrt) that offer a more complete feature set in the main package. These distributions provide more of an end-user experience for common use cases in a specific area. Otherwise, if you want a fully extendable Linux-based operating system for your device, OpenWrt is perfectly usable by anyone and is easy to set up and learn.
Why does OpenWrt seem so stripped and bare?
Because the OpenWrt Project is The Bazaar of embedded routing and does not bother to be a Cathedral (see The Cathedral and the Bazaar, http:\/\/www.catb.org\/esr\/writings\/homesteading). OpenWrt is designed to be user friendly, with an easy to use package management system. You just have to pick the desired components, configure them and in doing so build your own Cathedral. You can also build OpenWrt from source yourself instead of relying on pre-built images. There are numerous other projects built upon OpenWrt which do exactly that.
What are the objectives?
OpenWrt will never be a product, but something which makes it easy to build a product. OpenWrt will never be finished, never be complete, but will always be tracking the progress of technology. OpenWrt will never be specific, it will always remain generic. OpenWrt will never be the cathedral, it will simply supply the building blocks to construct one. Why does it say "Wireless Freedom"?
Because by employing OpenWrt you can achieve exactly that. This article for advanced users may help you to get started with that.
Why should I run OpenWrt?
Because the open architecture enables you to use stateful packet inspection, intrusion detection, and any number of other things that normally require several thousand dollars worth of hardware or proprietary commercial software to do effectively.
At the moment, there are more than 2000 software packages in the official repository, and many more provided by the community. The number of packages is evidence of the effectiveness of the OpenWrt build system, which provides the opportunity to easily port packages and create your own firmware.
How can I contribute?
Whether it be just an urge to fix that aggravating behavior that is not to your liking, or if you just want to share some ideas, we are always welcoming new people to contribute. Since we are completely community-driven, we rely on the users to lend their time and expertise to develop the project further. The OpenWrt community is very active and consists of many very dedicated people. The core development of the OpenWrt code base is where the biggest architectural changes and decisions happen.
In addition, since OpenWrt is very modular, maintaining the many packages also constitutes a large part of development. Additionally, well-written documentation is just as important as the development itself. In your own journey of getting OpenWrt to do what you want, it is always helpful for you to update this wiki with new or improved information. Of course all help is welcome to make OpenWrt even better. Everyone is animated to contribute by actively participating in the forum, report bugs and share their findings with fellow community members.
Remember that contributing means taking a look at the bigger picture, to see if something you want changed is benefiting the project as a whole, and not only you and your company. Also, if you are new to OpenWrt and are setting up your first installation, remember that learning and reading is an important part of the process; by figuring things out for yourself and solving problems on your own, you will pick up a better grasp of the subject and you will probably enjoy yourself in the process. In case you need some nudge in the right direction, there are many people who are willing to help you. Of course, after you solve your own problem, be sure to give back to the community by nicely documenting what you did, to save others some time (and rob them of the joy of solution finding)!
Please don't be deterred by the lack of the common marketing fuzz. OpenWrt presents itself in a very simple way, basically the OpenWrt Wiki and the OpenWrt Forum, and even lacks a cool logo, yet it is a very mighty and ubiquitous software solution for a vast number of use cases.
Working with a community
Working with a community does not mean (just) making the code available! Contributing means actively presenting your code to the people who work in that area and then participating in the discussions that fall out of it:
The real contribution you can make to OpenWrt\/the Linux kernel is not necessarily a large number of lines of code – it's letting us know about things we haven't thought about yet. And if we do work out how to solve these problems in a mutually satisfactory way so that everyone wins. We like interesting problems. Maybe you are inventing new interfaces because you are dealing with problems we have not thought about yet. There is no way we can know what those problems are just by looking at the code. So always try to document anything important that you do. If you want to help make OpenWrt better, remember: everyone wants to help, but not everyone is as knowledgeable as you. The community atmosphere is what counts, and educating each other is an important step in bringing this project to new heights. Good Design and Software
« A designer knows he has achieved perfection not when there is nothing left to add, but when there is nothing left to take away. » — Antoine de Saint-Exupéry
« Good designs arise only from evolutionary, exploratory interaction between one (or at most a small handful of) exceptionally able designer(s) and an active user population. » — Unknown
« Generosity is giving more than you can, and pride is taking less than you need. » — Khalil Gibran
Projects adopting OpenWrt
See this article on Wikipedia for a list of projects that are based on OpenWrt, either as a project that closely follows OpenWrt development or as a fork in the past. Notably:
Gargoyle - Closely follows OpenWrt development. Features its own web interface through which advanced funtionality can be configured. DD-WRT - Adopted the OpenWrt kernel in the past. CoovaAP - Wireless access point firmware based on CoovaChilli which is based on (now defunct) Chillispot. FON - Company operating WiFi access points, made available by customer's devices. ROOter - Free OpenWrt-based firmware that converts many conventional routers with USB port(s) into 3G\/4G\/LTE capable modem\/ routers. Supports modems at near their full throughput potential, provides detailed real time modem information display and much more. Other USB device support is developing. ROOter objectives. Doodle3D - Making 3D printing easy, built on top of OpenWRT. Turris OS - fork of OpenWrt used in router Turris Omnia. Turris is a not-for-profit research project of CZ.NIC. Each user of the service obtains a Turris router, which can, besides serving as a normal home router, also analyze the traffic between internet and the home network, and identify suspicious data flows. Resources
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