Alternatives to Transmit

Send any size file between devices

Transfer photos and files to any device

File transfer over ad-hoc wifi

Facilitate uploads and downloads with an Aspera transfer server

Secure, peer-to-peer file transfer app

Server and cloud storage browser

Finder replacement and FTP, SFTP, WebDAV and Amazon s3 client

Open-source BitTorrent client

Standalone TFTP, FTP, and SFTP server

Android file transfer

Real time file synchronisation software

FTP File Transfer Software