
ChainMemory
Mem0
Memori
Pieces for Developers
cognee
TheSecondBrain.dev
Claiv Memory
Persistent memory for Claude Code, Codex & coding agents

SQL Fiddle
db<>fiddle
Online SQL Editor
FastTools SQLite Playground
ExtendsClass SQL Online
sqlize.online
Rextester
An online tool for testing, sharing and collaborating on SQL snippets

Which is more popular?
Based on our record, DB Fiddle 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 | agent-memory.dev | db-fiddle.com |
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What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
No analysis of DB Fiddle yet.
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using Agentmemory and DB Fiddle. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Tracking Agentmemory since Jun 2026.
Conducting some quick tests using https://db-fiddle.com/ it looks like this project was designed to run on MySQL 5.5 and changes to MySQL since have caused it to break. Source: almost 4 years ago
UPDATE: Thank you all for your help! I appreciate it, made an appointment with the CI and turns out I had a bunch of syntax errors(surprising, I know.. lol). CI told me to use db-fiddle.com. Do the create table statements one at a time... Source: about 4 years ago
I think ive got 90% of this correct. However when you enter it into db-fiddle.com to validate it. It produces 3 errors and its proven beyond me to figure out whats wrong. Please and thank you to anyone that can tell me whats the deal is. Source: about 4 years ago
When comparing Agentmemory and DB Fiddle, you can also consider the following products.

Portable, verifiable memory for AI agents — works across ChatGPT, Claude, Gemini and any MCP client
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A tool for easy online testing and sharing of database problems and their solutions.
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An online tool for testing, demonstrating and sharing database commands and scripts.
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Persistent memory from agent trace, not just conversation
Compare Memori to Agentmemory or DB Fiddle:
