Free open source alternative app list of Email Client :

Macro Mail

Key features Keyboard-first design for fast, mouse-free email management Integrated AI assistance to help draft, summarize, and triage messages Built-in chat for quick conversations without leaving the inbox Task management tools to track follow-ups alongside your email Cross-platform desktop support for macOS, Windows, and Linux Platforms: macOS, Windows, Linux Links Official Website Pricing Free and open source under the AGPL-3.0 license.

FreeWindowsmacOSLinux

Others are looking for free open source alternatives of following apps:

AdGuard

AdGuard is a cross-platform ad blocker that filters web content and protects privacy.

Adobe Premiere Pro

Adobe Premiere Pro is a professional video editing software for film, TV, and web.

Ad Blocker

Ad Blocker is a browser tool that removes intrusive ads and pop-ups from web pages.

Acorn 7

Acorn 7 is a Mac image editor for editing photos and creating graphics.

AI / LLM Inference

AI/LLM Inference delivers fast, scalable deployment of large language models for generating AI responses.

AI & Machine Learning

Free open-source AI & machine learning tools.