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nautilus_trader vs x-algorithm

nautilus_trader and x-algorithm share 8 technologies: arrow, object_store, Redis, Tokio, parquet, log, tracing, and tracing-subscriber. Both are written in Rust.

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What they share and what sets them apart

nautechsystems

nautilus_trader

Production-grade Rust-native trading engine with deterministic event-driven architecture

Rust31.3kRead on November 7, 2026, at commit fa4c7a8What is nautilus_trader built with?

Only in nautilus_trader

In common

xai-org

x-algorithm

Algorithm powering the For You feed on X

Rust34.1kRead on November 7, 2026, at commit 3b6919fWhat is x-algorithm built with?

Only in x-algorithm

Side by side

SizeLines written by people and agents, without generated ones; code files, without tests.
nautilus_trader2,504,588 lines written2,347 code files
x-algorithm419,187 lines written929 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.
nautilus_trader0% of its commits signed by AIWith Claude Code
x-algorithm1.5% of its commits signed by AIWith Claude Code
ActivityFrom GitHub and its history, on the day SeeRepo read it.
nautilus_traderLast push November 7, 202621,899 commits31,337 stars
x-algorithmLast push November 7, 202665 commits34,122 stars
TestsThe files that test the code, and the share of code files a test imports.
nautilus_trader580 test files18% of its code files have a test that imports them
x-algorithm19 test files1.1% of its code files have a test that imports them

Frequently asked questions

Which is bigger, nautilus_trader or x-algorithm?
nautilus_trader, with 2,504,588 lines written; x-algorithm has 419,187.

The proof: nautechsystems/nautilus_trader's code at commit fa4c7a8

Which has more GitHub stars, nautilus_trader or x-algorithm?
x-algorithm, with 34,122 stars; nautilus_trader has 31,337.

The proof: xai-org/x-algorithm on GitHub

Which has more tests, nautilus_trader or x-algorithm?
nautilus_trader, with 580 test files; x-algorithm has 19.

The proof: nautechsystems/nautilus_trader's code at commit fa4c7a8

Which was updated more recently, nautilus_trader or x-algorithm?
Both got their last push on November 7, 2026.

The proof: nautechsystems/nautilus_trader's commits on GitHub

Which has more commits signed by AI, nautilus_trader or x-algorithm?
x-algorithm: an AI signed 1.5% of its commits, with Claude Code.

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