In computer networks, download means to receive data from a remote system, typically a server such as a web server, an FTP server, an email server, or other similar system. This contrasts with uploading, where data is sent to a remote server. A download is a file offered for downloading or that has been downloaded, or the process of receiving such a file. Get software for Linux from PTSource. Find and get the latest PTSource software, apps, development tools, libraries and documentation. We can customize and enhance our existing solution to fit your needs or build new innovative applications that improve productivity and efficiency.