Source Code Tarballs
 
The following tar files contain a source program (C++), a build script (Makefile), 
and a user guide or man page. The installation procedure is explained below.
dkopp-7.1.tar.gz
Feb 10 2019
findwild-2.5.tar.gz Feb 10 2019
fotoxx-19.12.tar.gz
May 31 2019
fotoxx-20.0-test-2019-06-17.tar.gz
Jun 17 2019   
fotoxx-maps-1.2.tar.gz Dec 01 2014    optional map files
galaxy2-1.3.tar.gz Feb 10 2019
lbench-4.0.tar.gz May 10 2019
mystuff-3.1.tar.gz Feb 10 2019
picpuz-2.9.tar.gz Feb 10 2019
sortpuz-1.5.tar.gz Feb 10 2019
ukopp-6.8.tar.gz Feb 10 2019
watsup-4.4.tar.gz Feb 10 2019
zfuncstest-7.2.tar.gz
May 11 2019

Dependencies:
    The following packages are needed to build and install these programs: 
       libc6, xdg-utils, g++, libgtk-3.0-dev, binutils

Fotoxx also needs: 
   libtiff5-dev, libpng-dev, liblcms2-dev, libimage-exiftool-perl, dcraw,
   libclutter-1.0-dev, libchamplain-0.12-dev, libchamplain-gtk-0.12-dev
   optional for playing video files: totem, ffmpeg

Package names are different:
    For Fedora and others, you must find corresponding packages,
    which have different names from the above Debian names.
  
Installation Procedure:
  0.  Install the above dependencies using your package manager.
  1.  Download the tar file by clicking one of the above links.
  2.  Open a terminal window and enter the following commands:
  3.  $ chdir Downloads                    # go to the tar file
  4.  $ tar -xzf appname-xxx.tar.gz        # unpack the tar file
  5.  $ chdir appname                      # go to unpacked files
  6.  $ make                               # build program
  7.  $ sudo make install                  # install program

Missing dependencies will cause error messages in step 6. 
Install these using your package manager and repeat step 6.
 
Step 7 installs program files in the following locations:
   /usr/bin, /usr/share/appname, /usr/share/doc/appname

Uninstall appname:
  $ sudo rm -f /usr/bin/appname  
  $ sudo rm -R -f /usr/share/appname
  $ sudo rm -R -f /usr/share/doc/appname
  $ rm -R -f /home/<user>/.appname



AppImage Packages
 
AppImage is a "distro agnostic" packaging format (read about Appimage HERE).
These 64-bit packages will work on many recent Linux releases.
They have been tested on the following:
   Ubuntu 16.04 - 19.04, Fedora 30, Mint 19.1, Manjaro 18

dkopp-7.1-appimage
Feb 10 2019
findwild-2.5-appimage
Feb 10 2019
fotoxx-19.12-appimage
May 31 2019
fotoxx-20.0-test-2019-06-17-appimage Jun 17 2019   
fotoxx-maps-1.2-appimage
Dec 01 2014    optional map files
galaxy2-1.3-appimage
Feb 10 2019
lbench-4.0-appimage
May 10 2019
mystuff-3.1-appimage
Feb 10 2019
picpuz-2.9-appimage
Feb 10 2019
sortpuz-1.5-appimage
Feb 10 2019
ukopp-6.8-appimage
Feb 10 2019
watsup-4.4-appimage
Feb 10 2019
 
Installation Procedure
1. download the program file by clicking on the corresponding link above.
2. move the program file to another location, if desired.
3. using your file manager, right click on the program file or icon, select 'properties'.
4. in the popup window, select 'permissions', check 'allow executing', close.
5. [double] left-click the program file to start the program.
 
The program should now be available in your system menus, with an icon/launcher.
An 'appname.desktop' file is installed at:  /home/<user>/.local/share/applications.
To uninstall, you can simply delete the program file.