Overview of Didi’s Open‑Source Projects Across AI, Big Data, Operations, Mobile and Frontend

Didi, a leading mobile ride‑hailing platform, has open‑sourced over 40 projects since 2017, spanning multiple technology domains.

Artificial Intelligence

• AoE – AI on Edge runtime for deploying deep‑learning models on devices. Project address: https://github.com/didi/aoe

• Athena – End‑to‑end automatic speech recognition engine supporting CTC, transformer, and hybrid models. Project address: https://github.com/didi/athena

• Chinese NLP – Resources and datasets for Chinese natural language processing. Project address: https://github.com/didi/ChineseNLP

• Delta – Deep‑learning based speech and language understanding platform. Project address: https://github.com/didi/delta

• maskdetection – Face‑mask detection model trained on 200k faces, achieving 99.5% accuracy. Project address: https://github.com/didi/maskdetection

Big Data

• ES‑Fastloader – Fast index builder for massive offline data using Hadoop. Project address: https://github.com/didi/ES-Fastloader

• Levin – High‑performance shared‑memory containers for large static datasets. Project address: https://github.com/didi/levin

Operations & Middleware

• DDMQ – Distributed message queue built on Apache RocketMQ. Project address: https://github.com/didi/DDMQ

• SQLFlow – Bridge between SQL and AI, enabling business users to apply machine learning via SQL. Project address: https://github.com/sql-machine-learning/sqlflow

• Elastic‑trib – CLI tool for managing multiple Elasticsearch clusters. Project address: https://github.com/didi/elastic-trib

• falcon‑log‑agent – Log collection and feature extraction tool integrated with Open‑Falcon. Project address: https://github.com/didi/falcon-log-agent

• Kafka‑Manager – One‑stop monitoring and management platform for Apache Kafka. Project address: https://github.com/didi/kafka-manager

• Nightingale – Enterprise‑grade monitoring solution for cloud‑native and bare‑metal environments. Project address: https://github.com/didi/nightingale

Mobile Development

• Echo – Debugging tool for mobile apps that displays network requests, logs, and UI changes. Project address: https://github.com/didi/echo

• DoraemonKit – Comprehensive iOS/Android development assistant with many plug‑ins. Project address: https://github.com/didi/DoraemonKit

• VirtualAPK – Plugin framework enabling dynamic module updates without reinstalling the app. Project address: https://github.com/didi/VirtualAPK

Frontend Development

• cube‑ui – Vue‑based mobile UI component library with post‑compilation optimization. Project address: https://github.com/didi/cube-ui

• di18n – Automatic code‑scan internationalization solution for front‑end projects. Project address: https://github.com/didi/di18n

• Mand Mobile and Mand Mobile‑RN – Component libraries for financial‑grade mobile and React‑Native applications. Project addresses: https://github.com/didi/mand-mobile and https://github.com/didi/mand-mobile-rn

• Tips – Static copy management platform for web pages with internationalization support. Project address: https://github.com/didi/Tips

Additional tools such as Go‑Spring , GateKeeper , Gendry , JuShaTa , Kemon , SDS , Tinyid , and many others are also listed, each with a brief description and a GitHub link.

The article concludes by encouraging readers to share the content and join the architecture community for further learning.