MobX vs Signals (TC39)
Updated Oct 18, 2026
Quick Verdict
MobX has 6.3x more GitHub stars.
GitHub Stars
MobX 28.2K
vs
Signals (TC39) 4.5K
Downloads/wk
MobX 0
vs
Signals (TC39) 0
Contributors
MobX 392
vs
Signals (TC39) 53
Bundle Size
MobX 14.9 KB
vs
Signals (TC39) 3.5 KB
Detailed Comparison
Side-by-side metrics from GitHub and npm
Metric
MobX
Signals (TC39)
GitHub Stars
28.2K
4.5K
Weekly Downloads
0
0
Forks
1.8K
129
Open Issues
29
50
Contributors
392
53
Bundle Size (gzip)
14.9 KB
3.5 KB
Dependencies
0
1
Latest Version
7.0.6
2.11.3
Last Commit
Oct 17, 2026
Sep 30, 2026
License
MIT
MIT
First Published
Feb 19, 2016
Aug 24, 2022
Feature Comparison
Framework capabilities at a glance
Feature
MobX
Signals (TC39)
Typescript
Devtools
Middleware
Selectors
Async
Atomic
Framework Agnostic
Frequently Asked Questions
Common questions about MobX vs Signals (TC39)
Is MobX better than Signals (TC39)?
It depends on your use case. MobX is simple, scalable state management through transparent reactive programming, while Signals (TC39) is reactive primitives for managing application state. Compare the stats and features above to decide which fits your needs.
Is MobX still maintained in 2026?
Yes, MobX was last updated on October 17, 2026 and has 392 contributors.
Can I migrate from MobX to Signals (TC39)?
Migration complexity depends on how deeply MobX is integrated into your project. Both tools serve similar purposes in the State Management space, so migration is generally feasible with proper planning.
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