Yes, Aspose.Slides Cloud API supports the feature to merge PowerPoint files. But please note it is an API, not an application. You need to use this API in your application for the required feature.
You can use the REST API on any platform that supports REST, or you can use Aspose.Slides Cloud SDKs directly in your favorite programming language. Please note currently Aspose.Slides Cloud is hosted on Aspose servers but we are also planning to launch Aspose.Slides Cloud Docker container for self-hosting solution in near future.
but API will not work at my organization, what we are looking for is a tool that we can upload several files directly, merge it, and output as one presentation file, and preferably to be done locally at the workstation not on cloud.
so if this kind of tool available at your side or you may know where we can have it that would be great.
we do not have an application to call your API or any coding can be done for the same.
Thanks for your detailed feedback. In your scenario, we have a paid consultancy option where we can also build the complete app for you using our APIs. Then you can use the app at your end. Please check paid consultancy page for more details.