Open Source Tools Every STEM Student Should Know About
Manish Shivanandhan |
Technology has changed the way students learn science, mathematics, engineering, and computer science. A decade ago, most STEM students depended on textbooks, calculators, and expensive licensed softw... read more
Database Version Control with Liquibase and Spring Boot
Ashutosh Krishna |
Picture this familiar scenario: you're working on a new feature that requires a new database column. You open your local database client, write an ALTER TABLE statement, and execute it. Your code work... read more
How to Optimize Enterprise Knowledge Graphs for Scalable Digital Product Platforms
Kamal Kishore |
Enterprises are building more and more digital products that depend on real time intelligence. This means that being able to connect, contextualize, and reason over data has become a core capability.... read more
How to Build a Browser-Based PDF Metadata Editor Using JavaScript – A Step-by-Step Guide
Bhavin Sheth |
PDF files contain more information than what appears on the page. Behind every PDF document is metadata that stores information such as the document title, author, subject, keywords, creator applicati... read more
How to Choose the Best Stock Market API for FinTech Projects and AI Agents
Nikhil Adithyan |
Choosing a stock API looks simple until the project becomes real. At first, you only need a few prices. You send a request, get JSON back, load it into pandas, and move on. But the moment that API sta... read more
How Attribute-Based Access Control Helps You Write Better Authorization Rules
Aiyedogbon Abraham |
Every application that handles user data eventually hits the same problem: not all users should see the same things. A junior nurse should not be able to access every patient record in the hospital. A... read more
Backend Challenges Teams Face When Processing Repeat Payments
Manish Shivanandhan |
Modern payment systems look simple from the outside. A user clicks a button, enters payment details, and money moves from one account to another. But once payments happen repeatedly rather than once,... read more
How to Preprocess Medical Images for Machine Learning – A Guide Using Chest X-Rays
Lakshmi Mahabaleshwara |
Working with healthcare data introduces preprocessing challenges that go beyond those you might encounter with structured data. Some familiar techniques still apply, while others look very different o... read more
Docker Full Course
Beau Carnes |
We just posted a comprehensive Docker course now live on the freeCodeCamp.org YouTube channel! The ability to scale applications instantly and ship software reliably is an important skill. Containeriz... read more
Key Technical Design Decisions for Building an Educational App with LLMs
Srishti Sethi |
Recently, I spent time prototyping an educational app using Claude Code. The project is an open-source mobile app for educators to share, discover, and facilitate low-cost creative learning activities... read more