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Top 4 C++ memory-allocator Projects
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JetBrains
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o1heap
Constant-complexity, deterministic, very fast memory allocator (heap) for hard real-time high-integrity embedded systems. Allocation takes ≈165 cycles on Cortex M4. There is little activity because the project is finished and does not require further changes.
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NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
C++ memory-allocator discussion
C++ memory-allocator related posts
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Google Pixel 4a old firmware is gone, trapping users on the buggy battery update
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Hardening Snmalloc
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Metamalloc: Single-header template based general purpose memory allocator lib
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Rtsha v1.0
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Real Time Safety Heap Allocator (Rtsha)
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Snmalloc: A Message Passing Allocator
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I have 16 gigabytes of RAM and I am going to use 16 gigabytes of RAM.
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A note from our sponsor - Sevalla
sevalla.com | 1 Sep 2025
Index
What are some of the best open-source memory-allocator projects in C++? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | Mesh | 1,817 |
| 2 | snmalloc | 1,718 |
| 3 | o1heap | 341 |
| 4 | RTSHA | 19 |
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