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Apache Airflow - A platform to programmatically author, schedule, and monitor workflows

Last commit Mar 28, 2026

 (44,809 stars) (16,781 forks) (223 indexed issues) (217 open good first issues)

A Q&A platform software for teams at any scales. Whether it's a community forum, help center, or knowledge management platform, you can always count on Apache Answer.

Last commit May 25, 2026

 (15,517 stars) (1,321 forks) (1 indexed issue) (1 open good first issue)

The Cloud-Native API Gateway and AI Gateway

Last commit May 15, 2026

 (16,597 stars) (2,860 forks) (18 indexed issues) (18 open good first issues)

Apache Beam is a unified programming model for Batch and Streaming data processing.

Last commit Jan 6, 2024

 (7,313 stars) (4,097 forks) (116 indexed issues) (116 open good first issues)

brpc is an Industrial-grade RPC framework using C++ Language, which is often used in high performance system such as Search, Storage, Machine learning, Advertisement, Recommendation etc. "brpc" means "better RPC".

Last commit Jul 24, 2024

 (16,226 stars) (3,936 forks) (8 indexed issues) (8 open good first issues)

Apache DolphinScheduler is the modern data orchestration platform. Agile to create high performance workflow with low-code

Last commit Feb 11, 2024

 (11,659 stars) (4,324 forks) (40 indexed issues) (40 open good first issues)

Apache Doris is an easy-to-use, high performance and unified analytics database.

Last commit Aug 18, 2025

 (14,108 stars) (3,531 forks) (2 indexed issues) (2 open good first issues)

The java implementation of Apache Dubbo. An RPC and microservice framework.

Last commit May 12, 2026

 (41,524 stars) (26,453 forks) (185 indexed issues) (185 open good first issues)

The ops and reference implementation for Apache Dubbo

Last commit Dec 5, 2023

 (3,920 stars) (2,158 forks) (1 indexed issue) (1 open good first issue)

Spring Boot Project for Apache Dubbo

Last commit Jan 25, 2023

 (5,404 stars) (1,880 forks) (2 indexed issues) (2 open good first issues)

Upserts, Deletes And Incremental Processing on Big Data.

Last commit Dec 29, 2023

 (4,823 stars) (2,431 forks) (24 indexed issues) (24 open good first issues)

Apache Iceberg

Last commit Jan 18, 2024

 (5,146 stars) (1,915 forks) (13 indexed issues) (13 open good first issues)

Apache Heron (Incubating) is a realtime, distributed, fault-tolerant stream processing engine from Twitter

Last commit Mar 1, 2023

 (3,636 stars) (620 forks) (4 indexed issues) (4 open good first issues)

:fire: Seata is an easy-to-use, high-performance, open source distributed transaction solution.

Last commit May 14, 2026

 (25,960 stars) (8,878 forks) (18 indexed issues) (18 open good first issues)

Apache Kyuubi is a distributed and multi-tenant gateway to provide serverless SQL on data warehouses and lakehouses.

Last commit May 14, 2026

 (2,332 stars) (996 forks) (32 indexed issues) (31 open good first issues)

Apache Lucene open-source search software

Last commit Jan 12, 2024

 (2,179 stars) (879 forks) (10 indexed issues) (10 open good first issues)

Lightweight, Portable, Flexible Distributed/Mobile Deep Learning with Dynamic, Mutation-aware Dataflow Dep Scheduler; for Python, R, Julia, Scala, Go, Javascript and more

Last commit Oct 25, 2023

 (20,808 stars) (6,711 forks) (8 indexed issues) (8 open good first issues)

Apache OpenWhisk is an open source serverless cloud platform

Last commit May 7, 2026

 (6,777 stars) (1,177 forks) (35 indexed issues) (35 open good first issues)

Apache Pinot - A realtime distributed OLAP datastore

Last commit Dec 26, 2023

 (4,937 stars) (1,234 forks) (92 indexed issues) (92 open good first issues)

Apache Pulsar - distributed pub-sub messaging system

Last commit Apr 7, 2024

 (13,697 stars) (3,485 forks) (65 indexed issues) (65 open good first issues)