This online, work-in-progress third edition explains data analysis and visualization with ggplot2.
Memery Spy
Memory Spy explains how to inspect memory and what data is present in a running program.
About Memery Spy
Memory Spy is a browser-based tool for looking at how variables are represented in memory. You write a small program, run it, and examine the actual bytes used to represent the variables in the running code. The homepage does not state which programming languages are supported, whether an account is required, or what the tool costs.
Key features
- Write a small program directly on the site
- Run the code from the page
- Inspect the bytes used to represent variables
- See how variables are stored in memory
Best for: Learners and developers who want a hands-on way to see how variables are laid out in memory.
Good for
- Focuses on hands-on experimentation: write, run and inspect in one place
- Shows the raw bytes behind variables rather than only their printed values
Memery Spy at a glance
- Website
- memory-spy.wizardzines.com
- Category
- Education & Learning › Learn to Code
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
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Memery Spy FAQ
How do I start using Memory Spy?
The homepage has a button to start experimenting, which opens the environment where you write and run a small program.
What can I inspect with it?
You can look at how the variables in the code you run are represented in memory, including the bytes used for them.
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