Looking for something like backend-challenges? Here are 24 alternatives, ranked by how closely they match it on purpose, features and platforms. Of these, 4 are free or have a free plan and 4 are open source.
backend-challenges lists open-source coding challenges based on real job requirements.
| # | Alternative | Pricing | Open source | Platforms |
|---|---|---|---|---|
| 1 | Data Engineering Practice Problems | — | Not stated | — |
| 2 | awesome-system-design-resources | — | Yes | — |
| 3 | StarSQL | Free | Not stated | Web |
| 4 | Hacksplaining | Freemium | Not stated | Web |
| 5 | Codepip | — | Not stated | Web |
| 6 | Algorithms-Cheatsheet-Resources | — | Yes | — |
| 7 | Handson ML3 | — | Yes | — |
| 8 | Data Engineer Handbook | — | Not stated | — |
| 9 | Codelabs | — | Not stated | Android, iOS, Web |
| 10 | RegexLearn | Free | Yes | Web |
Data Engineering Practice Problems provides exercises for practicing data engineering skills.
awesome-system-design-resources provides free materials for learning system design and interview preparation.
Select Star SQL is an interactive book that teaches SQL by running queries against a real-world dataset.
Hacksplaining teaches secure coding through interactive browser lessons covering OWASP Top 10 and GenAI threats.
Codepip offers coding games for practicing HTML, CSS, JavaScript, and SQL, including Flexbox Froggy and Grid Garden.
Algorithms Cheatsheet Resources collects reference material for programming and algorithms.
A series of Jupyter notebooks teaches machine learning and deep learning in Python with Scikit-Learn, Keras, and TensorFlow.
Data Engineer Handbook collects links and resources for data engineering.
Google Codelabs provides guided, hands-on tutorials for building applications and adding features across developer technologies.
RegexLearn teaches regular expressions through interactive lessons and practice at different levels.
Sourcecodester publishes free source code projects and tutorials in programming languages including Python, PHP, and Java.
Programiz offers free online compilers and code editors alongside programming tutorials for languages including Python, JavaScript, SQL, and C++.
Mage automates production data pipelines with SQL and Python workflows, data-quality checks, failure recovery, and performance tuning.
SQL Easy teaches SQL through 31 interactive browser exercises using SQLite, with hints and practice in common query clauses.
TutorialKart collects online courses, learning materials, and interview questions across programming, databases, SAP, and other subjects.
CS50’s Python course introduces programming with Python, covering code reading and writing, testing, debugging, and core concepts.
SQLBolt offers interactive SQL lessons and exercises for learning database queries.
SQL Noir teaches SQL through an interactive detective game where players query a database to investigate cases.
PortSwigger Web Security Academy offers free online training and interactive labs for web application security.
SQL Police Department teaches SQL through online crime-solving missions that require building queries and reviewing results.
SQLable collects SQL and database learning resources, including information about SQL features and tools.
CodeAnalogies teaches CSS and JavaScript concepts through visual guides, analogies, and imagery.
CS50x is Harvard’s introduction to computer science and programming for students with or without prior experience.
Lost at SQL teaches SQL concepts through a text-based game designed for data scientists and marketers.
Alternatives are suggested from the purpose and features described in our listings. Different pages for the same product appear once. Read each description to check whether it fits your task. How we choose alternatives · Suggest an alternative
