#1
:books: Freely available programming books
390K starsJun 13, 2026 pusheducationPythonEducation
$ npx skills add EbookFoundation/free-programming-booksAlternatives
UPortal alternatives for AI agents.
Compare similar skills by workflow fit, trust score, quality, GitHub adoption, maintenance, and install readiness.
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UPortal
Enterprise open source portal built by and for the higher education community.
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#2
All Algorithms implemented in Python
222K starsJun 1, 2026 pusheducationPythonEducation
$ npx skills add TheAlgorithms/Python#3
《Hello 算法》：动画图解、一键运行的数据结构与算法教程。支持简中、繁中、English、日本語，提供 Python, Java, C++, C, C#, JS, Go, Swift, Rust, Ruby, Kotlin, TS, Dart 等代码实现
127K starsApr 18, 2026 pusheducationJavaEducation
$ npx skills add krahets/hello-algo#4
Digital logic design tool and simulator
7.2K starsJun 12, 2026 pusheducationJavaEducation
$ npx skills add logisim-evolution/logisim-evolution#5
freeCodeCamp.org's open-source codebase and curriculum. Learn math, programming, and computer science for free.
448K starsJun 16, 2026 pusheducationTypeScriptEducation
$ npx skills add freeCodeCamp/freeCodeCamp#6
Coding articles to level up your development skills
128K starsJun 16, 2026 pusheducationJavaScriptEducation
$ npx skills add Chalarangelo/30-seconds-of-code#7
24 Lessons, 12 Weeks, Get Started as a Web Developer
96K starsJun 14, 2026 pusheducationJavaScriptEducation
$ npx skills add microsoft/Web-Dev-For-Beginners#8
A book series (2 published editions) on the JS language.
185K starsFeb 15, 2026 pusheducationEducationClaude Code
$ npx skills add getify/You-Dont-Know-JS#9
Learning Vim and Vimscript doesn't have to be hard. This is the guide that you're looking for 📖
15K starsApr 23, 2026 pusheducationDockerfileEducation
$ npx skills add iggredible/Learn-Vim#10
AnkiDroid: Anki flashcards on Android. Your secret trick to achieve superhuman information retention.
11K starsJun 16, 2026 pusheducationKotlinEducation
$ npx skills add ankidroid/Anki-Android#11
Code. Music. Live.
12K starsJun 12, 2026 pusheducationC++Education
$ npx skills add sonic-pi-net/sonic-pi#12
Jenkins automation server
25K starsJun 20, 2026 pushdevopsJavaDevOps
$ npx skills add jenkinsci/jenkins#13
Quarkus: Supersonic Subatomic Java.
16K starsJun 16, 2026 pushdevopsJavaKubernetes
$ npx skills add quarkusio/quarkus#14
🏗 Build container images for your Java applications.
14K starsMay 19, 2026 pushdevopsJavaKubernetes
$ npx skills add GoogleContainerTools/jib#15
Checkstyle is a development tool to help programmers write Java code that adheres to a coding standard. By default it supports the Google Java Style Guide and Sun Code Conventions, but is highly configurable. It can be invoked with an ANT task and a command line program.
9.0K starsJun 18, 2026 pushdevelopmentJavaStatic Analysis
$ npx skills add checkstyle/checkstyle#16
Testcontainers is a Java library that supports JUnit tests, providing lightweight, throwaway instances of common databases, Selenium web browsers, or anything else that can run in a Docker container.
8.7K starsJun 11, 2026 pushtesting-qaJavaTesting
$ npx skills add testcontainers/testcontainers-javaHow to choose
When should you switch?
Use an alternative when it has a clearer install path, higher trust score, fresher maintenance, or better platform fit for your current agent stack. Keep UPortal if it already passes your workflow test and repository review.
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