WindTerm

An innovative fast SSH/Telnet/Serial/Shell/sftp client.

Hello WindTerm 🌹, hello world!

We're just beginning! If you want a high performance text editor, you can try WindEdit.

License

Completely FREE for commercial and non-commercial use without limitations.

Introduction

See Intro Videos

Download

Windows Binary: https://github.com/kingToolbox/WindTerm/releases

(The binary of Macos and Linux will be committed later)

Issues and feature requests

Any issues and feature requests are welcome. Please click issues to commit an issue.

Screenshots

Main Window:

Split views:

Features

• Supports highlighting the opening and closing delimiter, such as (), [], {} and the customed delimiters.
• Integrated sftp, scp client, supports download, upload, remove, rename, make new file/directory and so on.
• Local and remote modes with vim keybindings. (Using Shift+Enter key to switch between remote and local mode)
• Command palette.
• Command sender.
• SSH v2, Telnet, Raw Tcp, Serial, Shell protocols implemented.
• Support vt100, vt220, vt340, vt420, vt520, xterm, xterm-256-colors.
• Support color schemes like vscode.
• Support time stamp, folding, outlining, split views.
• Support unicode, true-color, mouse protocol, etc.
• Support auto wrap mode.
• Support SSH auto login with password, public-key, keyboard-interactive, gssapi-with-mic.
• Support SSH auto execution when session authenticated.
• Support searching and previewing.
• Session dialog and session tree.
• Rename and duplicate session.
• Restore last sessions and layouts when restart.
• Protocols and terms can be customed.
• All vttest tests have passed except Tektronix 4014.
• High performance, low memory, low latency.

Sftp Performance

The hardware used for generating the data in these benchmarks was

windows 10 - 2.3 GHz Intel Core i5 and 8GB memory.

WindTerm 1.2, FileZilla 3.48.1, WinSCP 5.17.2 (Build 10278) tests are performed on WSL(Ubuntu 18.04.2).

All test data is for reference only.

• 5GB huge file (5,154,830 KB), generated by random data

	Download Time	Download Rate	Upload Time	Upload Rate
WindTerm (Use high speed transfer)	22s	234.3 MB/s	21s	245.5 MB/s
WindTerm	37s	139.3 MB/s	43s	119.9 MB/s
FileZilla	32s	161.1 MB/s	30s	171.8 MB/s
WinSCP	81s	63.7 MB/s	91s	56.7 MB/s

• 4400 files, 16 folders (107,042 KB), unzipped from vim-7.4.1049.zip

	Download Time	Download Rate	Upload Time	Upload Rate
WindTerm	32s	3.4 MB/s	10s	10.7 MB/s
FileZilla	48s	2.2 MB/s	35s	3.1 MB/s
WinSCP	42s	2.6 MB/s	12s	8.9 MB/s

Terminal Performance

The hardware used for generating the data in these benchmarks was

windows 10 - 2.3 GHz Intel Core i5 and 8GB memory.
MacOs 10.13 - 2.3 GHz Intel Core i5 and 8GB memory.

WindTerm, rxvt, putty, xterm tests are performed on WSL(Ubuntu 18.04.2).

Iterm2, kitty, Alacritty tests are performed on MacOS shell,

For WindTerm: No color scheme used in windterm. Color scheme will result in approximately 2% loss and more memory usage.

For Alacritty: Can not find how to set the scrollback lines limit, so every test use its default setting and no memory usage measured.

The version of terminals:

windterm      v0.8
rxvt-unicode: v9.2.2
putty:        v0.71
xterm:        v3.30
iterm2:       v3.3.6
alacritty:    v0.3.3
kitty:        v0.14.6

All test data is for reference only.

• 97.6MB random text (102,401,504 bytes, 1,329,878 lines, generated and tested by random_test.sh)

In all cases, three runs were made to warm system caches. The reported numbers are the median of five runs.

1. Telnet:

	Lines of scrollback	Data Rate(MB/sec)	Memory Usage(MB)
WindTerm	unlimited	51.6	98.5
rxvt	1,350,000	37.8	842.2
Putty	1,350,000	4.9	733.4
xterm	1,350,000	2.2	3328.4

2. SSH:

	Lines of scrollback	Data Rate(MB/sec)	Memory Usage(MB)
WindTerm	unlimited	50.5	98.1
rxvt	1,350,000	40.2	842.2
Putty	1,350,000	4.8	734.9
xterm	1,350,000	2.3	3328.4

3. Shell:

	Lines of scrollback	Data Rate(MB/sec)	Memory Usage(MB)
iterm2	unlimited	- (Take too long time)	more than 1300
kitty	unlimited	17.2	2655
Alacritty	Limited scrollback	41.4	-

• time seq 1 n

1. n = 1,000,000, scrollback = 1,000,000 Lines

	Time(sec)	Memory Usage(MB)
WindTerm	1.141	10.6
rxvt	5.082	633.3
putty	4.161	551.1
xterm	40.421	2500.7
iterm2	2.116	146.3
Kitty	2.535	2376.5
Alacritty	1.215	Not measured, use its default scrollback setting

2. n = 2,000,000, scrollback = 2,000,000 Lines

	Time(sec)	Memory Usage(MB)
WindTerm	2.053	16.0
rxvt	10.896	1266.6
putty	16.045	1102.6
xterm	68.154	5005.5
iterm2	4.181	383.2
Kitty	5.620	4749.9
Alacritty	2.448	Not measured, use its default scrollback setting

3. n = 5,000,000 scrollback = 5,000,000 Lines

	Time(sec)	Memory Usage(MB)
WindTerm	4.839	38.7
rxvt	27.533	3166.2
putty	45.911	2757.1
xterm	-	Out of memmory
iterm2	10.805	1048.3
Kitty	-	Out of memory
Alacritty	6.172	Not measured, use its default scrollback setting

4. n = 10,000,000 scrollback = 10,000,000 Lines

	Time(sec)	Memory Usage(MB)
WindTerm	9.576	78.6
rxvt	-	Out of memory
putty	-	Out of memory
xterm	-	Out of memmory
iterm2	20.468	2231.3
Kitty	-	Out of memory
Alacritty	12.332	Not measured, use its default scrollback setting

5. n = 10,000,000 scrollback = 30 Lines

	Time(sec)	Memory Usage(MB)
WindTerm	9.514	2.2
rxvt	9.687	0.1
putty	95.382	0.4
xterm	286.510	0.1
iterm2	25.448	7.4
Kitty	16.104	0.5
Alacritty	12.221	Not measured, use its default scrollback setting

Latency

Considering the network influence on the latency, the following data is from DIGEdit. DIGEdit is the text component of WindTerm.

	Min	Max	Avg	SD
DIGEdit	1.9	7.6	2.9	0.8
Windows Notepad	0.9	16.5	7.8	1.8
GVim	0.9	10.4	2.8	1.2

Shortcuts

Shortcut	Action
Alt+C	Copy
Alt+D	Show command palette
Alt+F	Find
Alt+F3	Find next
Alt+Shift+F3	Find previous
Alt+F4	Exit
Alt+M, Alt+F	Toggle full screen
Alt+M, Alt+H	Toggle hex view
Alt+N	New session
Alt+O	Open session
Alt+S	Save text
Alt+T, Alt+B	Toggle margin blank
Alt+T, Alt+F	Toggle margin fold
Alt+T, Alt+N	Toggle margin number
Alt+T, Alt+S	Toggle margin symbol
Alt+V	Paste
Alt+W, Alt+D	Close active dock
Alt+W, Alt+G	Close active group
Alt+W, Alt+H	Split horizontally
Alt+W, Alt+L	Show outline pane
Alt+W, Alt+V	Split vertically
Alt+X	Copy and paste
Alt+-	Zoom in
Alt++	Zoom out
Alt+[	Activate next view
Alt+]	Activate previous view
Ctrl+.	Jump to next fold
Ctrl+,	Jump to previous fold
Ctrl+Shift+A	Select all text
Ctrl+Shift+T	Reopen closed session
Ctrl+Shift+W	Close current session
Ctrl+Shift+-	Select current fold text
Shift+Del	Copy
Shift+End	Jump to document end
Shift+Home	Jump to document home
Shift+Ins	Paste
Shift+PgDown	Jump to next page
Shift+PgUp	Jump to previous page

Roadmap

Release cycle:

2-3 weeks.

Next release (Early July，for reference only):

• X11 forwarding
• Port forwarding (Tunnel)
• Auto complete

Todo list:

• Protocols:
  • Rlogin
  • SSH
    • X11 Forwarding
    • Port forwarding (Tunnel)
• UI:
  • Config dialog
  • Local filer for cmd, powershell
  • Quick command bar.
• Terminal:
  • Linux bash
  • MacOs bash
• Session:
  • Proxy
  • Chat mode
  • Log and log viewer
• File transfer:
  • ftp, ftps
  • Xmodem, Ymodem, Zmodem(sz, rz)
• Script, macro and plugin stystem
• More ...