
DataLemur
HackerRank
LeetCode
SafeQL
Sql Assist
SQLBolt
SQL FOR ZOMBIES
Get interview-ready with real SQL questions, story-driven puzzles, and case studies — all solvable right in your browser. Start practicing free today.

DataLemur
SQL FOR ZOMBIES
SQL Teaching
Practice real SQL interview questions in your browser on a real Postgres engine. Free tutorial, concept cards, sandbox, and graded labs.

Which is more popular?
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | sqlint.com | sqlcrab.com |
| Pricing | ||
| Platforms | — | |
| Company | Startup from India · 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


SQLint is an interactive SQL learning and practice platform built to help you learn SQL by actually solving problems. Practice real SQL queries, prepare for technical interviews, and challenge yourself with interactive SQL puzzles that require you to analyze data, think logically, and find the...
SQLCrab is a place to train for SQL interviews. Learn the fundamentals with a step-by-step tutorial, lock in key ideas with concept cards, experiment in the sandbox, then test yourself with graded labs built around the questions employers actually ask. Real Postgres, Real practice. No setup, just...
What each product offers, as listed by its team.


How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing SqlInt and SQLCrab.
SqlInt's answer
SQLint is primarily built for students, aspiring developers, developers improving their SQL skills, and anyone preparing for technical interviews that involve SQL.
SqlInt's answer
No major customers yet- SQLint is currently open to individual learners and developers.
SqlInt's answer
SQLint focuses on learning by doing. Users can practice SQL queries, prepare for interviews, and solve interactive puzzles in one place, making SQL practice more hands-on and engaging than simply following tutorials or reading documentation.
SqlInt's answer
SQLint combines practical SQL practice with interactive puzzles, giving learners a more engaging way to build real query-writing and problem-solving skills. Instead of only learning SQL concepts, users learn by writing, experimenting, and solving challenges.
SqlInt's answer
SQLint started with a simple idea: SQL is best learned by actually writing and solving queries. Instead of making learning purely theoretical, the goal was to create a practical and interactive place where people can practice SQL, make mistakes, solve problems, and improve their skills.
SqlInt's answer
Only list technologies you're actually using. If your stack is: Next.js, React, TypeScript, and Supabase
Share your experience with using SqlInt and SQLCrab. For example, how are they different and which one is better?
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Practice SQL Interview Questions & Data Science Interview Questions asked by FAANG.
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HackerRank is a platform that allows companies to conduct interviews remotely to hire developers and for technical assessment purposes.
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Practice and level up your development skills and prepare for technical interviews.
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