Open Source Mac FTP Clients

FreeFileSync is a free Open Source software that helps you synchronize files and synchronize folders for Windows, Linux and macOS. It is designed to save your time setting up and running data backups while having nice visual feedback along the way. _______________________________________________________________ DOWNLOAD LINKS (official homepage): https://freefilesync.org/

AeroFTP is a cross-platform file transfer client that goes beyond traditional FTP. Connect to 25 protocols, FTP - FTPS, SFTP, WebDAV, S3, Google Drive, Dropbox, OneDrive, MEGA, Box, pCloud, Azure Blob, Filen, Zoho WorkDrive, Internxt, kDrive, Koofr, FileLu, Yandex Disk, OpenDrive, and more - from a single interface. Security-first: AeroVault v2 encrypted containers (AES-256-GCM-SIV), Cryptomator vault support, OS keyring integration, and zero telemetry. Built-in AeroAgent AI assistant supports 19 providers (OpenAI, Anthropic, Gemini, Ollama, etc.) with 47 tools for file operations, code editing, and workflow automation. Includes Monaco code editor, integrated terminal, AeroPlayer media player with 14 visualizers, AeroCloud personal sync, dual-pane browser, archive support (ZIP, 7z, TAR, RAR), batch rename, and 47 languages. Also ships a full CLI (aeroftp-cli) with 30 subcommands and batch scripting. Built with Rust (Tauri 2) + React 18. Open source, GPL-3.0.

LeechCraft is a cross-platform modular "internet-client" application. It has plugins that allow one to browse the web, chat via instant messaging (like Jabber or IRC), read RSS/Atom feeds, download files via BitTorrent, Direct Connect and other protocols, play media files and much more.

Monsta FTP is a lightweight open-source FTP client you can install on your server to manage your files through any browser, and free yourself from desktop software, forever!