#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
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#5
Coding articles to level up your development skills
128K starsJun 16, 2026 pusheducationJavaScriptEducation
$ npx skills add Chalarangelo/30-seconds-of-code#6
24 Lessons, 12 Weeks, Get Started as a Web Developer
96K starsJun 14, 2026 pusheducationJavaScriptEducation
$ npx skills add microsoft/Web-Dev-For-Beginners#7
AnkiDroid: Anki flashcards on Android. Your secret trick to achieve superhuman information retention.
11K starsJun 16, 2026 pusheducationKotlinEducation
$ npx skills add ankidroid/Anki-Android#8
A book series (2 published editions) on the JS language.
185K starsFeb 15, 2026 pusheducationEducation
$ npx skills add getify/You-Dont-Know-JS#9
Code. Music. Live.
12K starsJun 12, 2026 pusheducationC++Education
$ npx skills add sonic-pi-net/sonic-pi#10
Jenkins automation server
25K starsJun 20, 2026 pushdevopsJavaDevOps
$ npx skills add jenkinsci/jenkins#11
Quarkus: Supersonic Subatomic Java.
16K starsJun 16, 2026 pushdevopsJavaKubernetes
$ npx skills add quarkusio/quarkus#12
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#13
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-java#14
JHipster is a development platform to quickly generate, develop, & deploy modern web applications & microservice architectures.
22K starsJun 16, 2026 pushdevopsTypeScriptKubernetes
$ npx skills add jhipster/generator-jhipster#15
p5.js is a client-side JS platform that empowers artists, designers, students, and anyone to learn to code and express themselves creatively on the web. It is based on the core principles of Processing. Looking for p5.js 2.0? http://beta.p5js.org
24K starsJun 14, 2026 pushdesign-creativeJavaScriptCreative Coding
$ npx skills add processing/p5.js#16
#1 PDF Application on GitHub that lets you edit PDFs on any device anywhere
81K starsJun 18, 2026 pushdocument-processingTypeScriptPDF
$ npx skills add Stirling-Tools/Stirling-PDFHow 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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