Technologies

What is codex built with?

Q: Which repos have a stack like codex's?

The ones that share most of its stack: n8n-io/n8n, langgenius/dify, and farion1231/cc-switch.

codex is a Rust repo built with axum. It stores its data in SQLite and watches its errors with Sentry. It has 4,202 files and 2,310,690 written lines, with 2,441 test files.

Read on November 3, 2026, at commit f1b0721. Read it as markdown

codex4,202 files

Backend

Other repos with a similar stack

Ordered by how much of its stack they share with codex, then by stars.

n8n-ion8n
209.4k
Fair-code workflow automation platform with native AI capabilities. Combine visual building with custom code, self-host or cloud, 400+ integrations.
2 of 3 in common · TypeScript
langgeniusdify
160.3k
Build Agentic workflows, RAG pipelines, with rich AI model and tool support on one collaborative workspace. Deploy on cloud, VPC, or self-hosted, so teams move from prototype to production without rebuilding the stack.
2 of 3 in common · Python
farion1231cc-switch
151.5k
A cross-platform desktop All-in-One assistant for Claude Code, Codex, OpenCode,DeepSeek Harness and more. Only official website: ccswitch.io
2 of 3 in common
tinyhumansaiopenhuman
42.4k
The fastest, cheapest, most efficient open-source agent harness. Run more than 500 agents on a $10 VPS.
2 of 3 in common
langfuselangfuse
36.8k
🪢 Open source agent evals & observability: Trace, evaluate, and improve LLM applications with one open platform.
2 of 3 in common · TypeScript
seaweedfsseaweedfs
35.9k
SeaweedFS is a distributed storage system for object storage (S3), file systems, and Iceberg tables, designed to handle billions of files with O(1) disk access and effortless horizontal scaling.
2 of 3 in common · Go