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stunnel vs spiped: catalog facts
stunnel	spiped
Free Free under the GPL 2.0 or later, with paid commercial support and non-GPL licences…	Free Free software under the BSD 2-Clause license.
Windows, Linux, Command line	Command line
Adds TLS to existing programs without code changes Supports load balancing for larger deployments	Encrypts and authenticates forwarded connections Includes a client and daemon
Configured through text files, with no graphical setup Not a community project; development is controlled by the author	Requires both ends to share a symmetric key Does not hide information revealed by packet timing
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0-or-later	License: BSD-2-Clause
No account needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 8, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.