51CTO

OSCHINA.NET 是目前领先的中文开源技术社区。我们传播开源的理念，推广开源项目，为 IT 开发者提供了一个发现、使用、并交流开源技术的平台

艾瑞网聚合互联网数据资讯，融合互联网行业资源，提供电子商务、移动互联网、网络游戏、网络广告、网络营销等行业内容，为互联网管理营销市场运营人士提供丰富的产业数据、报告、专家观点、行业数据库等服务，打造最具影响力的互联网数据资讯聚合平台。

百度智能云专注云计算、智能大数据、人工智能服务，提供稳定的云服务器、云主机、云存储、CDN、域名注册、物联网等云服务,支持API对接,快速备案等专业解决方案。

VisuAlgo was conceptualised in 2011 by Dr Steven Halim as a tool to help his students better understand data structures and algorithms, by allowing them to learn the basics on their own and at their own pace. Together with his students from the National University of Singapore, a series of visualizations were developed and consolidated, from simple sorting algorithms to complex graph data structures. Though specifically designed for the use of NUS students taking various data structure and algorithm classes (CS1010/equivalent, CS2040/equivalent, CS3230, CS3233, and CS4234), as advocators of online learning, we hope that curious minds around the world will find these visualizations useful as well.

CSDN是全球知名中文IT技术交流平台,创建于1999年,包含原创博客、精品问答、职业培训、技术论坛、资源下载等产品服务,提供原创、优质、完整内容的专业IT技术开发社区.

Codewars is a coding practice site for all programmers where you can learn various programming languages. Join the community and improve your skills in many languages!

掘金是一个帮助开发者成长的社区,是给开发者用的 Hacker News,给设计师用的 Designer News,和给产品经理用的 Medium。掘金的技术文章由稀土上聚集的技术大牛和极客共同编辑为你筛选出最优质的干货,其中包括：Android、iOS、前端、后端等方面的内容。用户每天都可以在这里找到技术世界的头条内容。与此同时,掘金内还有沸点、掘金翻译计划、线下活动、专栏文章等内容。即使你是 GitHub、StackOverflow、开源中国的用户,我们相信你也可以在这里有所收获。

Gitee - 基于 Git 的代码托管和研发协作平台