Hi Squirrel, it’s nice to meet you too.
When I look at these frameworks and read their description it’s a bit hard for me to understand what it is exactly that they do since I lack the knowledge of the terminologies used and the names of other frameworks, programming languages etc.
I think with frameworks the work to create such an app is actually minor since it doesn’t require much.
For example it would need a database that is linked to multiple marketplaces let’s say that item 1 has 10 units in stock
Therefore in all marketplaces the stock should = 10
If from amazon 1 unit is sold
then you should get a callback that updates the stock level on all other inventories
So in the end it ends up with 9 units of item 1 across all sales channels.
It is a simple how many is there? - does it match the record if yes do nothing if no update records…
What I have found out before is that API calls from amazon for example cost money… But that being said I have found Firefox extensions that can actually read the stock levels of a particular item without making API calls… I don’t know how that works but might be something of interest for you