General

Platform

The operating systems or virtual machines the SSH clients are designed to run on without emulation include several possibilities:

• Partial indicates that while it works, the client lacks important functionality compared to versions for other OSs but may still be under development.

The list is not exhaustive, but rather reflects the most common platforms today.

Technical

Features

Authentication key algorithms

This table lists standard authentication key algorithms implemented by SSH clients. Some SSH implementations include both server and client implementations and support custom non-standard authentication algorithms not listed in this table.

See also

• Comparison of SSH servers
• Comparison of FTP client software
• Comparison of remote desktop software

References

1. "AbsoluteTelnet/SSH Version History". http://www.celestialsoftware.net/absolutetelnet-ssh-client/absolutetelnet/ssh-version-history-9.53/all-pages.html ↩

2. "Bitvise SSH Client Version History". 20 December 2023. https://www.bitvise.com/ssh-client-version-history-9 ↩

3. "Bitvise SSH Server Version History". 20 December 2023. https://www.bitvise.com/ssh-server-version-history-9 ↩

4. Based on Trilead SSH-2 for Java. ↩

5. "Release 1.9.10". 21 December 2023. Retrieved 19 January 2024. https://github.com/connectbot/connectbot/releases/tag/v1.9.10 ↩

6. "Dropbear 2024.86". 22 October 2024. Retrieved 4 January 2025. https://github.com/mkj/dropbear/releases/tag/DROPBEAR_2024.86 ↩

7. Also known as OpenBSD Secure Shell. ↩

8. Based on OSSH. ↩

9. "release-9.9". Retrieved 20 September 2024. https://www.openssh.com/txt/release-9.9 ↩

10. Simon Tatham (8 February 2025). "PuTTY 0.83 is released". Retrieved 9 February 2025. https://lists.tartarus.org/pipermail/putty-announce/2025/000041.html ↩

11. "SecureCRT 9.6.1". 17 December 2024. https://www.vandyke.com/cgi-bin/releases.php?product=securecrt&ver=9.6 ↩

12. "SecureCRT 9.6.1". 17 December 2024. https://www.vandyke.com/cgi-bin/releases.php?product=securecrt&ver=9.6 ↩

13. "SecureCRT on the App Store". 21 December 2023. https://apps.apple.com/us/app/securecrt/id911124130 ↩

14. "SecureCRT 9.6.1". 17 December 2024. https://www.vandyke.com/cgi-bin/releases.php?product=securecrt&ver=9.6 ↩

15. Based on Tera Term Pro 2.3 (1994–1998). ↩

16. "Release 5.4.0". 2 March 2025. Retrieved 31 March 2025. https://github.com/TeraTermProject/teraterm/releases/tag/v5.4.0 ↩

17. "TN3270 Plus Version History". February 2019. https://www.sdisw.com/tn3270/version.htm ↩

18. Based on wolfCrypt. /wiki/WolfCrypt ↩

19. "Release 1.4.20". 20 February 2025. Retrieved 28 February 2025. https://github.com/wolfSSL/wolfssh/releases/tag/v1.4.20-stable ↩

20. Also available under a proprietary license. ↩

21. "ZOC Terminal – SSH/Telnet-Client and Terminal Emulator – Version History". 8 April 2024. https://www.emtec.com/zoc/versionhistory.html ↩

22. "ZOC V4.15". 25 August 2004. https://www.emtec.com/downloads/zoc/zoc4/zoc415_os2_english.txt ↩

23. "ZOC Terminal – SSH/Telnet-Client and Terminal Emulator – Version History". 8 April 2024. https://www.emtec.com/zoc/versionhistory.html ↩

24. Only for jailbroken devices. /wiki/Jailbreak_(iPhone) ↩

25. lsh supports only one BSD platform officially, FreeBSD. /wiki/FreeBSD ↩

26. Also known as OpenBSD Secure Shell. ↩

27. Included and enabled by default since windows 10 version 1803. Win32-OpenSSH can be installed as an optional component in the Windows versions before Windows 10 version 1803 to Windows 10 version 1709. Portable version can be download from Win32-OpenSSH for other versions. https://github.com/PowerShell/Win32-OpenSSH ↩

28. The majority of Linux distributions have OpenSSH as an official package, but a few do not. /wiki/Linux_distributions ↩

29. Only for jailbroken devices. /wiki/Jailbreak_(iPhone) ↩

30. Only for jailbroken devices. /wiki/Jailbreak_(iPhone) ↩

31. Accelerating OpenSSH connections with ControlMaster. https://www.linux.com/news/accelerating-openssh-connections-controlmaster/ ↩

32. Can the SSH client connect itself through a proxy? This is distinct from offering a SOCKS proxy or port forwarding. /wiki/Port_forwarding ↩

33. The ability for the SSH client to perform dynamic port forwarding by acting as a local SOCKS proxy. ↩

34. The ability for the SSH client to establish a VPN, e.g. using TUN/TAP. /wiki/TUN/TAP ↩

35. Also known as OpenBSD Secure Shell. ↩

36. OpenSSH deleted SSH protocol version 1 support in version 7.6 (2017-10-03) https://www.openssh.com/txt/release-7.6 ↩

37. The version 0.63 supports GSSAPI. Successfully tested on Win 8 using Active Directory http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html ↩

38. The PuTTY developers provide SCP and SFTP functionality as binaries for separate download. ↩

39. WinSCP bundles a number of software components including PuTTY. [1]. https://winscp.net/eng/docs/contributions ↩

40. WinSCP Version history. https://winscp.net/eng/docs/history ↩

41. WinSCP connection tunneling. https://winscp.net/eng/docs/tunneling ↩

42. SCP and SFTP through terminal. ↩

43. SCP and SFTP according to ZOC features page. https://www.emtec.com/zoc/features.html ↩

44. Accelerating OpenSSH connections with ControlMaster. https://www.linux.com/news/accelerating-openssh-connections-controlmaster/ ↩

45. Can the SSH client connect itself through a proxy? This is distinct from offering a SOCKS proxy or port forwarding. /wiki/Port_forwarding ↩

46. The ability for the SSH client to perform dynamic port forwarding by acting as a local SOCKS proxy. ↩

47. The ability for the SSH client to establish a VPN, e.g. using TUN/TAP. /wiki/TUN/TAP ↩

48. The ability to transmit mouse input to text mode applications such as Midnight Commander /wiki/Midnight_Commander ↩

49. Also known as OpenBSD Secure Shell. ↩

50. Only when the terminal itself supports mouse input. Most graphical ones do, e.g. xterm. /wiki/Xterm ↩

51. No native URL highlighting; however most graphical consoles support URL highlighting. ↩

52. Validated when running OpenSSH 2.1 on Red Hat Enterprise Linux 6.2 in FIPS mode or when running OpenSSH 1.1 on Red Hat Enterprise Linux 5 in FIPS mode http://csrc.nist.gov/groups/STM/cmvp/documents/140-1/140val-all.htm#1791 ↩

53. OpenSSH supports the minimal certificate format since v5.4. "OpenSSH Release Notes: 5.4". OpenBSD Project. 2010-03-08. Retrieved 2021-08-30. https://www.openssh.com/releasenotes.html#5.4 ↩

54. PuTTY does not support tabs directly, but many wrappers are available that do. ↩

55. PuTTY does not support hyperlinks, but some forks of PuTTY do. ↩

56. Putty v71.0 does not support OpenSSH certificates. See Ben Harris' 2016-04-21 wish.[15][16] ↩

57. ssh-dss is based on Digital Signature Algorithm which is sensitive to entropy, secrecy, and uniqueness of its random signature value. /wiki/Digital_Signature_Algorithm ↩

58. Also known as OpenBSD Secure Shell. ↩

59. By default, disabled at run-time since OpenSSH 7.0 released in 2015. ↩

60. PuTTY does not support security keys / FIDO tokens, but is supported in PuTTY-CAC https://github.com/NoMoreFood/putty-cac/ ↩

61. PuTTY does not support security keys / FIDO tokens, but is supported in PuTTY-CAC https://github.com/NoMoreFood/putty-cac/ ↩

62. ZOC' SSH is based on OpenSSH and supports the same encryptions. ↩