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Explore more than 580 journals and eBooks in the biological, ecological, and environmental sciences.

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The dblp computer science bibliography is the online reference for open bibliographic information on major computer science journals and proceedings.

JSTOR is a digital library of academic journals, books, and primary sources.

中国生物医学文献服务系统——SinoMed，由中国医学科学院医学信息研究所/图书馆研制，2008年首次上线服务，整合了中国生物医学文献数据库（CBM）、中国生物医学引文数据库（CBMCI）、西文生物医学文献数据库（WBM）、北京协和医学院博硕学位论文库（PUMCD）等多种资源，是集文献检索、引文检索、开放获取、原文传递及个性化服务于一体的生物医学中外文整合文献服务系统。　

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remove.bg在线抠图软件轻松实现一键抠图，只需上传图片，无需其他操作，即可100%自动去除图片背景。

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jpgHD.com - Using 2025 cutting-edge AI models for lossless restoration of old photos (supports old, scratched photo restoration, colorization, and Ultra Restore)

Real-ESRGAN aims at developing Practical Algorithms for General Image/Video Restoration. - xinntao/Real-ESRGAN

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Want to contribute to open source, but not sure where to start? This is a list of projects which have curated tasks specifically for new contributors. These are a great way to get started with a project, or to help share the load of working on open source projects.

issuehub.io is being revived as a resource for open-source collaboration. We're bringing it back.

Get Started Contributing to Open Source Projects

Bitbucket Cloud is a Git-based code and CI/CD tool optimized for teams using Jira.

Download and upload free web designs.

Opensource.com 发布有关创建、采用和共享开源解决方案的文章

Google <3 Open Source

Launchpad A software collaboration platform that provides

The Complete Software Platform Compare B2B software & read B2B software reviews to find the best tools. Create, collaborate & distribute to nearly 20 million users worldwide.

Collection of handy online tools for developers, with great UX. IT Tools is a free and open-source collection of handy online tools for developers & people working in IT.

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Replit is an AI-powered platform for building professional web apps and websites.

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Visualize code in Python, JavaScript, C, C++, and Java

CoderPad is the best tool available for conducting programming phone screen interviews. Edit code and run it with your candidate, realtime in the browser.

JSONing is an online JSON toolbox that provides a variety of tools, including a JSON formatter, JSON linter, JSON AI fixer, Mock API, JSONL tools, converters, and more.

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Create graph online and use big amount of algorithms: find the shortest path, find adjacency matrix, find minimum spanning tree and others

A collection of free, simple and useful online tools for software developers, web developers and network/system administrators.

Share code in real-time with developers in your browser. An online code editor for interviews, troubleshooting, teaching.

Turn your code into beautiful images. Choose from a range of syntax colors, hide or show the background, and toggle between a dark and light window.

Regular expression tester with syntax highlighting, PHP / PCRE & JS Support, contextual help, cheat sheet, reference, and searchable community patterns.

Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, GO, JavaScript, Java, C#/.NET, Rust.

Pyrexp is a regex tester for Python, it allows to verify syntax, check matches, and visualize patterns effortlessly. Export regex visuals as JPGs for easy sharing.

Collection of various dev tools that can help every developer in his day to day job

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Access a comprehensive hotkey cheatsheet for popular software and applications. Enhance your workflow and productivity with time-saving keyboard shortcuts.