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strongSwan vs Algo VPN: catalog facts
strongSwan	Algo VPN
Free Free under GPLv2, with commercial licensing available as an option.	Free The open-source scripts are free. Cloud hosting is paid separately.
Windows, macOS, Linux, Android, Self-hosted, Command line	macOS, Linux, Command line
Thorough IKEv2 implementation with many IETF extensions Runs on Linux, Android, FreeBSD, macOS and Windows	Strong cryptographic defaults chosen by a security firm, with nothing to tune Generates ready-to-import client configurations for every device
Configuration requires solid IPsec knowledge Mainly configured through files and the command line	You pay for and maintain the cloud server yourself A personal VPN gives you a fixed address, which is not anonymity
Downloadable app, Self-hosted	Downloadable app
Open source	Open source
License: GPL-2.0	License: AGPL-3.0
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 September 23, 2026	Official website Full listing and sources Checked September 22, 2026

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