I found CollabShot when I try to find some ScreenSteps replacement tool for Linux. Notice numbering steps in image bellow, arrows and box with rounded corners.

Nice one, now it works nice. There is icon in systray with menu. Now you can work on editor improvement:

* Line tool icon displays arrow, but draw straight line w/o arrow head. This can be improved.

* Numbering tool can be added for presenting steps.

I'm use Unity.

Here is console output for collabshot 0.3 i386 installed on Ubuntu 12.04 x86_64. I have no icon, indicator, menu, nothing to setup username/password or some other options in desktop app. After Ctrl-Alt-P and grabbing snap, image was uploaded to http://collabshot.com/show/hOo2VM but I got nothing when I visit my history http://collabshot.com/user/history - You don't have any screenshots in your history yet.  Upload one or take one with our app. Here is console output of that running process:

aleksandar@dionis:~/Downloads$ collabshot
Unable to load library icui18n "Cannot load library icui18n: (libicui18n.so.48: wrong ELF class: ELFCLASS64)" 
/usr/lib/gtk-2.0/2.10.0/menuproxies/libappmenu.so: wrong ELF class: ELFCLASS64




(collabshot:25003): Gtk-WARNING **: Failed to load type module: /usr/lib/gtk-2.0/2.10.0/menuproxies/libappmenu.so




/usr/lib/gtk-2.0/2.10.0/menuproxies/libappmenu.so: wrong ELF class: ELFCLASS64




(collabshot:25003): Gtk-WARNING **: Failed to load type module: /usr/lib/gtk-2.0/2.10.0/menuproxies/libappmenu.so




/usr/lib/gtk-2.0/2.10.0/menuproxies/libappmenu.so: wrong ELF class: ELFCLASS64




(collabshot:25003): Gtk-WARNING **: Failed to load type module: /usr/lib/gtk-2.0/2.10.0/menuproxies/libappmenu.so




/usr/lib/gtk-2.0/2.10.0/menuproxies/libappmenu.so: wrong ELF class: ELFCLASS64




(collabshot:25003): Gtk-WARNING **: Failed to load type module: /usr/lib/gtk-2.0/2.10.0/menuproxies/libappmenu.so




X Error: BadMatch (invalid parameter attributes) 8
  Major opcode: 42 (X_SetInputFocus)
  Resource id:  0x5000019
X Error: BadMatch (invalid parameter attributes) 8
  Major opcode: 42 (X_SetInputFocus)
  Resource id:  0x5000019
PixUpload header
PixUpload header
"uploading to collabshot.com/api/upload.php
POST /api/upload.php HTTP/1.1
Host: collabshot.com
Content-Type: multipart/form-data; boundary=---------------------------dev-collabshot
Content-Length: 120809




-----------------------------dev-collabshot
Content-Disposition: form-data; name="upload-file"; filename="675083a0-abc0-42db-a5bd-12272469501c.png"
Content-Type: image/png




�PNG

" 
Got a buffer underflow! 
{"code":"hOo2VM","status":"ok","url":"http://collabshot.com/show/hOo2VM","uuid":"675083a0-abc0-42db-a5bd-12272469501c"}
"got response from 'collabshot.com/api/upload.php'" 
Got a buffer underflow!