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union vs vector

union and vector share 11 technologies: axum, tower, sqlx-postgres, Postgres, sqlx, Tokio, Ratatui, crossterm, tracing, tracing-subscriber, and Tailwind CSS. Both are written in Rust.

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What they share and what sets them apart

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 5, 2026, at commit 031785bWhat is union built with?

Only in union

In common

vectordotdev

vector

A high-performance observability data pipeline.

Rust22.8kRead on November 4, 2026, at commit 1bac1b8What is vector built with?

Only in vector

  • aws-sdk-s3
  • tokio-postgres
  • Redis
  • lru
  • MongoDB
  • aws-sdk-kinesis
  • opendal
  • Kafka
  • AWS S3
  • warp
  • indicatif
  • aws-sdk-sts
  • azure_identity
  • parquet
  • quick-xml
  • csv
  • handlebars
  • jsonschema
  • metrics
  • azure_core
  • log
  • tracing-core
  • aws-sdk-iam

Side by side

SizeLines written by people and agents, without generated ones; code files, without tests.
union468,416 lines written1,841 code files
vector472,373 lines written1,238 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.
union0% of its commits signed by AIWith CodeRabbit
vector0.9% of its commits signed by AIWith Claude Code, Cursor, and GitHub Copilot
ActivityFrom GitHub and its history, on the day SeeRepo read it.
unionLast push July 25, 202613,299 commits73,725 stars
vectorLast push November 4, 202614,656 commits22,799 stars
TestsThe files that test the code, and the share of code files a test imports.
union120 test files10.4% of its code files have a test that imports them
vector242 test files28% of its code files have a test that imports them

Frequently asked questions

Which is bigger, union or vector?
vector, with 472,373 lines written; union has 468,416.

The proof: vectordotdev/vector's code at commit 1bac1b8

Which has more GitHub stars, union or vector?
union, with 73,725 stars; vector has 22,799.

The proof: unionlabs/union on GitHub

Which has more tests, union or vector?
vector, with 242 test files; union has 120.

The proof: vectordotdev/vector's code at commit 1bac1b8

Which was updated more recently, union or vector?
vector: its last push was on November 4, 2026, and union's on July 25, 2026.

The proof: vectordotdev/vector's commits on GitHub

Which has more commits signed by AI, union or vector?
vector: an AI signed 0.9% of its commits, with Claude Code, Cursor, and GitHub Copilot.

The proof: the commits each tool signed in vectordotdev/vector

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