Freedom251 › SSH Server Software
wolfSSH
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Open source GPLv3 | GPLv3 terms apply | Free |
| Basic support | 1 year · 3 support incidents · Email only · 3 business day response | $2,600 a year |
| Premium support | 1 year · Unlimited incidents · Email or phone · 4 business hour response · Dedicated support engineer | $28,500 a year |
| 24x7 & Long Term Support | 1 year · Long term support · Target hardware added to nightly CI tests | $50,000 a year |
| Standard support | 1 year · 10 support incidents · Email only · 1 business day response | $8,500 a year |
| Commercial license | Commercial licensing available; contact wolfSSL for inquiries | On request |
As wolfssl.com lists them, read 7 Oct 2026. The maker's own page has the final word.
Facts from wolfSSH's own pages
- Authentication
- Client authentication options include RSA and ECC public keys, passwords, and keyboard-interactive authentication. · wolfssl.com, 7 Oct 2026
- Company
- wolfSSL says it is based in Bozeman, Montana, Seattle, Washington, and Portland, Oregon, and dates its founding to 2004. · wolfssl.com, 7 Oct 2026
- Cryptography
- wolfSSH is powered by wolfCrypt and lists support for hybrid post-quantum use with ML-KEM, Curve25519, Ed25519, Curve448, Ed448, RSA, DH, and ECC. · wolfssl.com, 7 Oct 2026
- File transfer
- It supports SCP and SFTP file transfer. · wolfssl.com, 7 Oct 2026
- Headquarters
- Edmonds, Washington, USA · wolfssl.com, 28 Sept 2026
- Interoperability
- The product page says wolfSSH has been interoperability tested against OpenSSH, Tera Term, PuTTY, Dropbear, FileZilla, and Bitvise. · wolfssl.com, 7 Oct 2026
- Licensing
- wolfSSH is dual licensed under GPLv3 and commercial licensing; businesses redistributing it in proprietary products are directed to commercial licensing inquiries. · wolfssl.com, 7 Oct 2026
- Platforms
- Listed operating environments include Windows, Linux, Mac OS X, Solaris, FreeBSD, embedded Linux, Zephyr, FreeRTOS, ThreadX, and VxWorks. · wolfssl.com, 7 Oct 2026
- Purpose
- wolfSSH is a lightweight SSHv2 client and server library written in ANSI C for embedded, RTOS, and resource-constrained environments. · wolfssl.com, 7 Oct 2026
- Remote access
- Features include basic shell support, remote command execution, and port forwarding. · wolfssl.com, 7 Oct 2026
- Small footprint
- The product page lists a minimum footprint of 33 kB and runtime memory usage between 1.4 and 2 kB, excluding a configurable receive buffer. · wolfssl.com, 7 Oct 2026
- Support
- wolfSSL offers public support forums and a ticket system, and says submitting [email protected] creates a ticket. · wolfssl.com, 7 Oct 2026
- Support limits
- The Basic, Standard, and Premium packages list 3, 10, and unlimited support incidents respectively, while the 24x7 & Long Term Support package lists long-term support. · wolfssl.com, 7 Oct 2026
Where wolfSSH stands on Freedom251
- SSH Server Software#18 of 34