grpc-rust vs union

grpc-rust and union share 6 technologies: axum, Tokio, tower, console, tracing, and tracing-subscriber. Both are written in Rust.

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What they share and what sets them apart

grpc

grpc-rust

A native gRPC client & server implementation with async/await support.

Rust12.5kRead on November 11, 2026, at commit 18ce109What is grpc-rust built with?

Only in grpc-rust

  • tower-layer
  • google-cloud-auth
  • opentelemetry

In common

unionlabs

union

The trust-minimized, zero-knowledge bridging protocol, designed for censorship resistance, extremely high security, and usage in decentralized finance.

Rust73.7kRead on November 9, 2026, at commit 031785bWhat is union built with?

Only in union

Side by side

SizeLines written by people and agents, without generated ones; code files, without tests.
grpc-rust142,127 lines written309 code files
union468,416 lines written1,876 code files
Who writes itA commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
grpc-rust0.1% of its commits signed by AIWith Cursor
union0% of its commits signed by AIWith CodeRabbit
ActivityFrom GitHub and its history, on the day SeeRepo read it.
grpc-rustLast push November 11, 20261,657 commits12,537 stars
unionLast push July 25, 202613,299 commits73,718 stars
TestsThe files that test the code, and the share of code files a test imports.
grpc-rust83 test files22% of its code files have a test that imports them
union120 test files10.2% of its code files have a test that imports them

Frequently asked questions

Which is bigger, grpc-rust or union?
union, with 468,416 lines written; grpc-rust has 142,127.

The proof: unionlabs/union's code at commit 031785b

Which has more GitHub stars, grpc-rust or union?
union, with 73,718 stars; grpc-rust has 12,537.

The proof: unionlabs/union on GitHub

Which has more tests, grpc-rust or union?
union, with 120 test files; grpc-rust has 83.

The proof: unionlabs/union's code at commit 031785b

Which was updated more recently, grpc-rust or union?
grpc-rust: its last push was on November 11, 2026, and union's on July 25, 2026.

The proof: grpc/grpc-rust's commits on GitHub

Which has more commits signed by AI, grpc-rust or union?
grpc-rust: an AI signed 0.1% of its commits, with Cursor.

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