Esoteric Single Counter Programming Language
BrainF*** with if-statements, but esoteric languages are well-trodden ground.

Fun demoscene experiment, but the author admits it's not worth actually using.
Programming language enthusiasts, esoteric format hobbyists
JSON · YAML · BSON
BrainF*** with if-statements, but esoteric languages are well-trodden ground.
Unified serialization API for six formats without codegen or macros using Zig comptime.
Finally handles circular refs and Maps where JSON and MessagePack both fail.
Fory pushes most serialization work into compile-time C++ via a FORY_STRUCT macro so deserialization is inlined and avoids runtime reflection — that alone is an impressive engineering move. Add first-class polymorphism over smart pointers, shared/circular reference tracking, and a single binary wire format across six languages, and you get a rare combo: expressive native C++ types plus cross-language compatibility. The main question is ecosystem adoption and whether the language runtimes and benchmarks hold up in messy real-world schemas.
Custom notation cuts JSON size, but Protocol Buffers and MessagePack already dominate.
Git metaphor for agent memory is clever; execution and adoption remain unproven.