Apache Storm

Distributed real-time stream processing engine for low-latency analytics

Apache Superset

Enterprise‑grade, web‑based data exploration and visualization platform

Apache Traffic Control

Orchestrate a scalable, open-source CDN with Apache Traffic Control

Apereo CAS

Enterprise Single Sign-On and Identity Provider for Web

Aperture

Swift library for high‑fidelity macOS screen and audio capture

API Dash

Beautiful cross-platform API client with multimedia response preview

ApostropheCMS

Full-stack Node.js CMS with in-context editing and headless flexibility

AppFlowy

AI-powered workspace alternative to Notion with data control

Appsmith

Open-source low-code platform for building internal tools fast

Appwrite

End-to-end backend platform for web, mobile, and native apps

Aptabase

Privacy-first analytics for mobile, desktop, and web apps

Arachni

Intelligent Ruby scanner for dynamic web application security

ArangoDB

Scalable multi-model database for graphs, documents, and key-values

Archery

Unified vulnerability scanner for CI/CD pipelines and DevOps teams

Archivy

Self-hosted knowledge repository with digital preservation and extensibility

Argilla

Collaborative platform for building high-quality AI datasets

Argo CD

GitOps-powered continuous delivery for Kubernetes, fully declarative.

Argos Translate

Offline Python translation library with extensible language models

Artie Transfer

Real-time CDC replication from OLTP to OLAP databases

Astuto

Collect, prioritize, and showcase customer feedback with ease

ATAC

Terminal-based API client for free, offline HTTP testing

Atlantis

Automate Terraform pull‑request workflows with self‑hosted execution

Atom

Your AI-powered personal and business assistant in one place

Atomatic

Automated reply bot for messaging apps like WhatsApp