Chilkat is a cross-language, cross-platform API providing 90+ classes for many Internet protocols, formats, and algorithms.
Some classes need a license: SSH, SFTP, FTP2, HTTP, REST, Socket/TLS, IMAP, ...
Some are free: JSON, XML, Cert, PrivateKey, ...

All .NET/.NET CF/Xamarin.iOS/Xamarin.Android components from Rebex in one pack: SFTP client and server, FTP, FTPS, IMAP, POP3, SMTP, NTP, SNTP, Time ...

Diafaan SMS Server full edition is a powerful SMS platform for 3G/GSM/CDMA modems, HTTP SMS services and SMPP accounts. This edition has no limits on the number of 3G/GSM modems, SMPP accounts or HTTP based SMS services. It is the perfect solution for projects where you need to apply multiple 3G/GSM modems. Diafaan SMS Server is an SMS gateway for Windows that makes it easy to send and receive SMS text messages from and to a web browser, web server, email, SQL database or C#/Visual Basic .NET script.

All .NET/.NET CF/Xamarin.iOS/Xamarin.Android components from Rebex in one pack: SFTP client and server, FTP, FTPS, IMAP, POP3, SMTP, NTP, SNTP, Time ...

FTP component and FTPS component for .NET framework. It allows you to transfer files from your application using FTP and FTPS (also known as FTP over SSL/TLS) protocols. Written entirely in managed code. Works with .NET 2.0-4.7.2, 4.8+, 5.0+, Mono, .NET Core 2.0+, .NET Standard 2.0+.

Delphi and C++ Builder communication components. Protocols 3964 and 3964R are implemented.

Features

Available for Delphi/C++ Builder 5 - 11 and Lazarus 2.0.12
Source code included in registered version
Royalty free distribution in applications

Delphi and C++ Builder communication components. Protocols 3964 and 3964R are implemented.

Features

Available for Delphi/C++ Builder XE2 - 11
Source code included in registered version
Royalty free distribution in applications

All .NET/.NET CF/Xamarin.iOS/Xamarin.Android components from Rebex in one pack: SFTP client and server, FTP, FTPS, IMAP, POP3, SMTP, NTP, SNTP, Time ...

SecureBridge is a suite of client and server components for SSH, SFTP, FTPS, HTTP/HTTPS, SSL, WebSocket, and SignalR protocols. Our network security solution is easy to install and use: it is enough to place several components on the form and specify the server address and user credentials to establish a secure connection.

SecureBridge is a suite of client and server components for SSH, SFTP, FTPS, HTTP/HTTPS, SSL, WebSocket, and SignalR protocols. Our network security solution is easy to install and use: it is enough to place several components on the form and specify the server address and user credentials to establish a secure connection.