memfs
In-memory file-system with Node's fs API.
By the numbers
The breakdown
There's no cost to use memfs at all — it's free, full stop.
memfs is a consistently strong performer, scoring 4.2 out of 5 on our rating metric.
Over the period tracked, memfs has seen rapid user growth, expanding roughly 201% over the past 4 years.
memfs trails the testing frameworks average on every metric we track (0 of 3).
with roots going back to 2015, memfs is a long-tenured option in this category.
memfs vs. Testing Frameworks average
| Feature | memfs | Testing Frameworks average |
|---|---|---|
| Weekly Downloads | 53,384,926 | 123,273,429 |
| Dependent Packages | 856 | 2,751 |
| Popularity score | 4.2 / 5 | 4.4 / 5 |
Pros and cons
Strengths
- Free to use, with no paid tier required to get started.
Watch-outs
- Weekly Downloads trails the category average: 53,384,926 vs. 123,273,429.
- Dependent Packages trails the category average: 856 vs. 2,751.
- Falls short on popularity score — 4.2 / 5 against a category average of 4.4 / 5.
- Growing fast enough that current figures may shift quickly — verify before relying on them.
Growth over time
Common questions
Is memfs free to use?
Yes — memfs is free, with no paid tier required to get started.
Is memfs good? What's its rating?
memfs scores 4.2 out of 5 on our rating metric, versus a Testing Frameworks category average of 4.4.
How many people use memfs?
memfs has roughly 53.4M users/stars tracked, compared to a category average of 123.3M.
When was memfs founded?
memfs was founded in 2015, making it 11 years old.
Is memfs growing?
Yes — usage is up roughly 201% over the past 4 years.
Ready to see memfs for yourself?
Opens the official site in a new tab.