Need Recommendation For Bulk / Mass Upload Products & Its Images

I am searching for a english based plugins, that can bulk upload products & images, for my necessities:

1. Compatible with Opencart 1.5.6.4, and version 2 or 3 or above. Because maybe someday I would like to update my opencart version.

2. Can import mass or bulk upload product, from a *.csv / *.xls / *.zip. So I can do time saving, because don't need to input products one by one. One import and many many products & its images will be uploaded.

3. If possible, I would like to have a free plugins due to I am still a small online shop. If you could, please mention me 3 plugins that can fullfill my request, so I have options when a plugin doesn't work.

4. But commercial one would be appreciated to, if the quality is worth its price. If you could, please mention me 3 plugins that can fullfill my request, so I have options when a plugin doesn't work.

5. It possible, can be modified / customize to my custom necessities.

Any recommendation would be appreciated. Thank you very much.

Google is by far your best independent Friend, when it comes to such matters!
Ernie
https://www.google.com/search?q=+Mass+U ... r+OpenCart