There are the following features as well as PalmVNC.

For more detail, visit http://new.micro-vnc.jp/download/mVNC_PALM/
Updated Description:

V2.11 New Features: This is major upgrade and many new features introduced from other platform version(BREW,Symbian,WM5,etc.).

1. Support "Side menu" and configurable "Macro"
   You can do various operations using right/left popup menu(Side menu).
   The operations(Macro) such as "Close(Alt+F4)" are configurable.
2. Support "File Transfer"
   Ultr@VNC style File Transfer protocol is now supported.
   You can upload/download file between Palm external memory card and remote PC.
3. Support sound streaming
   ESD(Enlightened Sound Daemon) with Vorbis sound compression extension is now available.
   You can hear the sound played back on remote PC from your Palm!
   (Notice)Sound stream is delivered by another server separated from VNC server. If you want to use sound stream, you need to setup sound streaming server. More detail, see manual.
4. Support new lossy codec for motion picture(ZYWRLE)
   New our lossy codec suit for motion picture is now available.
   Though image is fuzzy partially, network traffic reduced to 50%(Hi)/15%(Mid) traffice of ZRLE when we play back motion picture.
   (Notice)Almost VNC server doesn't support ZYWRLE because it was developed by us. If you want to use ZYWRLE, you need to setup ZYWRLE available VNC server. More detail, see manual.

V0.95 New Features:

1. Support 16 bit color mode
   16bit color (65,536 colors) mode can be used in VNC communication.
   PC screen drawing color is nearly real display color!
   (Although the amount of traffic increases twice... it is usefull in hi-bandwidth like a Wi-Fi.)
   (Notice)If you use rdp2vnc, upgrade your rdp2vnc.
   Old rdp2vnc ussupports 16bit color mode.
2. Support "Fuzzy" drawing mode
   In this mode, the amount of traffic decreases half although small font character crushes and disappears like scaling. (it is usefull in low-bandwidth like a GRPS.)
3. Add Network indicator
   You can see comunication status on the screen.
4. Add advanced setting of "Disable SSS(VNC compatible)"
   In this mode, you can't use scaling and fuzzy drawing, you can use all kind of VNC server. This is useful in old VNC server.
5. Available to map each Hard button independently of each other rather than map pair of key.
   
6. Reorganize the "Details" and "Advanced" forms to "Details", "Display", "Keys" forms.
   Please refer manual about above 3 new forms.
7. Fixed the problem of incorrect screen size in PalmOS 5.4 device like a Treo 650. Also fixed the problem of 5-way navi. in PalmOS 5.4 device

V0.93 New Features:

1. Support subset of SSH2(SSH protocol version2)
   You can get more secure connection!
   (Notice)There are some considerable things for using SSH2. See Change log of included manual for details.
2. Add Show/Hide Scroll bar mode.
   Add Show/Hide System status bar mode.
   You can use entire display for PC display!
3. The 16-bit color mode screen is used in Palm which supports it.
   The problem to which palettes in DIA and status bar are corrupted was solved.
   (Notice)Although screen mode became 16-bit color, this does not mean that 16-bit color is used by the VNC protocol. PC screen drawing is still 256 color.
4. Support PalmOne 5-way Navi.(Tungsten/Zire)
   Support Tapwave Action button(Zodiac)
   
5. Add Configurable Key binding
   Add Key mapping shift mode You can use hard keys for any purpose you want! And also, you can use one hard key for two purpose!
6. Add "Advanced setup" form
   => go to [Edit] form => [Detail] form =>
   new [Adv...] button.
7. Change meaning of "Key" in status bar.
   Although it means Key(board) which indicates whether virtual grafiti displayed in previous version, it means Key(Shif