
Avro
TOML
Protobuf
Protocol Buffers
Apache Thrift
Eno
YAML
An efficient binary serialization format.

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

Which is more popular?
Based on our record, Messagepack seems to be more popular. It has been mentioned 15 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | msgpack.org | agent-memory.dev |
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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.


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


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


ImHex will tell you if it's compressed. Do you understand data structures? Floats, all those data types? I'd suggest looking at a format like msgpack to see what a binary data format could look like: https://msgpack.org/ Then be aware... - Source: Hacker News / 12 months ago
ARJSON leverages bit-level optimizations to encode JSON at lightning speed while compressing data more efficiently than other self-contained JSON encoding/compression algorithms, such as MessagePack and CBOR. - Source: dev.to / over 1 year ago
I also read that Salt was using MessagePack to format their messages. MessagePack is a format like JSON, but more compact. - Source: dev.to / about 3 years ago
Tracking Agentmemory since Jun 2026.
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Protocol buffers are a language-neutral, platform-neutral extensible mechanism for serializing structured data.
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Persistent memory from agent trace, not just conversation
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