
phpize.online
SQL Fiddle
DB Fiddle
Online SQL Editor
db<>fiddle
Rextester
SQLZOO
SQLize.online is a free online SQL environment for quickly running, experimenting with and sharing SQL code.

ChainMemory
Mem0
Memori
Pieces for Developers
cognee
TheSecondBrain.dev
Claiv Memory
Persistent memory for Claude Code, Codex & coding agents
Which is more popular?
Based on our record, sqlize.online seems to be more popular. It has been mentioned 5 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | sqlize.online | agent-memory.dev |
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External articles and on-site reviews we used to compare the two products.


Simple way to run SQL and test it in different DB versions.
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Recommendations tracked on public social media and blogs since March 2021.


If you want to experiment with ROWS, RANGE, and GROUPS directly, sqlize.online is the easiest place to test queries quickly. If you want a more structured way to study SQL through lessons and practice, I publish that work on sqltest.online. - Source: dev.to / 8 months ago
Elements into fully functional SQL editors. Powered by the SQLize.online engine, it allows users to write and execute SQL against real database instances without leaving your page. Key Features 20+ Database Engines:... - Source: dev.to / 10 months ago
Just replace 'start_date' and 'end_date' with your desired start and end dates and try it on SQLize.online. - Source: dev.to / about 3 years ago
Tracking Agentmemory since Jun 2026.
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