One way of ensuring your portable apps remain up to date would be to create a script with line for each app containing something similar to the following:
wget -c URL_to_Apps_site_with_download_path/app_to_get
What this file will do is change directory to the folder your portable app is stored and and download the URL you enter in your script. Provide you keep the links up to date, running the script from time to time will ensure that your portal apps remain up to date.
In order for the above to work you will need wget installed.
The only problem is that some apps names include version number in their download link so it might require some maintenance or automation to keep the script up to date.
Some other thoughts on how to achieve this:
- the other option is to use some online service providing combined installers, but that cannot be automated
- if you have an RSS reader for news, you can monitor the sites through that tool
- you can also monitor RSS emissions on sourceforge to see when a new version is released