Products
Protocol components for .NET developers who ship commercial software — SFTP, mail and Outlook data, written from the specifications and supported by the people who wrote them. Every library works the same from C# and VB.NET, and every licence is a perpetual OEM licence with no subscription lock-in and no telemetry.
Developer libraries
Developer library · .NET · Coming soon
Bastion SftpServer
Put a real SFTP server inside your own application. One assembly, no service to install and no second process to keep alive. Twenty-six events let your code decide who may log in and what they may touch. Post-quantum key exchange, two-factor login and a brute-force defender built in, and 1,393 automated tests.
From $449 per developer, OEM
Developer library · .NET · Coming soon
Bastion SftpClient
Talk to any SFTP server from your own code — ten lines to a working transfer, with an event for every step. Recursive runs, cancellable progress, keepalives, and a client that defends itself against a hostile server. A complete two-pane transfer application ships in source.
From $399 per developer, OEM
Developer library · .NET · Coming soon
Bastion Mail Sdk
POP3, IMAP and SMTP clients that share one MIME engine and one MailMessage type. OAuth 2.0 for Gmail and Microsoft 365, retry-safe sending, IMAP IDLE and MOVE, and not one third-party dependency in the client assemblies.
From $399 per developer, OEM
Developer library · .NET · Coming soon
Bastion Mail Server Sdk
A complete mail server that lives inside your application: embeddable IMAP, POP3 and SMTP servers over your own data and your own users. IMAP4rev2 with CONDSTORE and QRESYNC, onward delivery with bounces, and 1,159 tests driven by an independent client.
From $1,299 per developer, OEM
Developer library · .NET · Coming soon
Bastion Pst Sdk
A fully managed .NET library for Outlook .pst and .ost files — read, author, merge, split, convert, repair and validate, without Outlook and without MAPI. Structural repair and validation the established alternatives do not offer.
From $999 per developer, OEM
Applications
Application · in development
BastionMFT
A managed file transfer server for Windows: virtual users, isolated home directories, a full audit trail, unattended service operation and load distribution across nodes. Built on an extended version of our own SFTP engine. Currently pre-alpha.
Suites
Buy the pair that belongs together. Suites carry the same OEM terms as each product: royalty-free redistribution, server and SaaS deployment included, and a perpetual licence with 12 months of updates, renewable at 35% of list. Ten-developer and site editions are five and ten times the single-developer price.
Licensing
Components are licensed per developer as OEM licences: royalty-free redistribution inside your own product, with desktop, server, cloud and SaaS deployment included — no per-server, per-instance or per-end-user fees. Each licence is perpetual with 12 months of updates, and renewals cost 35% of list. Source-code escrow is available with site licences. Every product page has a side-by-side comparison with the established alternatives, prices included. Applications are licensed perpetually with optional annual maintenance.