We have now opened a commercial services section here on the forum for registered users. If you have a Fabrik project that you wish to have someone work on for you, post it under Help Wanted. If you are an application developer and wish to earn some money helping others, post your details under Fabrik Application Developers.
Both of these are unmoderated. It will be up to both parties to work out the details and come to an agreement.
For running J!5.1 you must https://fabrikar.com/forums/index.php?wiki/update-from-github/ or include the new file manually https://fabrikar.com/forums/index.php?threads/joomla-5-1-and-fabrik-cannot-find-files-error.54473/post-285151 See also Announcements
Thanks @juuser, I'll give it a try.You can still use FusionCharts latest Gantt charts "manually":
https://www.fusioncharts.com/charts/gantt-charts/simple-gantt-chart?framework=php
You just need to add the chart generating code e.g. to custom module and you can embed it to list or form with Regular Labs Modules Anywhere. It's a bit more complicated as you need to build the chart data with your own query, but nothing too extreme.