Which one should I pick for a new project?

I can only provide a technical comparison between these two projects based on the code evidence, not a recommendation for your specific needs. Here's what the repository data shows:

freeyourgadget/gadgetbridge:

• Status: STALE — last commit 1 year ago (RepoPilot signal)
• Purpose: Android application for connecting wearables (Pebble, Mi Band, Amazfit, HPlus, etc.) without vendor apps
• Language: Java, JavaScript, Shell, AIDL, HTML
• License: AGPLv3 (with GPLv3 and MIT components)
• Maturity: 4513 stars, active community on Codeberg (now primary home)

proxyee-down-org/proxyee-down:

• Purpose: Desktop download manager with proxy capabilities
• Language: Java (Netty HTTP server), JavaScript (UI extensions), YAML configuration
• Status: Appears archived/succeeded — README indicates development moved to a new Golang/Flutter project called Gopeed
• Architecture: Proxy server + JavaFX GUI + extension system

Key differences:

• Use case: Gadgetbridge is for wearable device management; proxyee-down is for downloading files
• Maintenance: Gadgetbridge is stale but community-maintained on Codeberg; proxyee-down appears to have been superseded
• Active development: Neither shows recent activity

If you're starting a new project, neither should be picked as a base without understanding their staleness. Gadgetbridge at least remains maintained by its community; proxyee-down's successor (Gopeed) is actively developed in a different stack.

FOLLOW_UPS:

• What type of project are you building?
• How important is active maintenance to you?
• Do you need device integration or download management?