I also found these tools while doing the research https://geticonjar.com/ https://inboardapp.com/ https://en.eagle.cool/ for those who are looking for pixa alternatives can give it a try too 
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Wow thank you for your detailed review! I think raindrop and mymind’s layout are very nice! 
especially mymind’s AI is really a plus, would love to see how it works when putting it...

Sorry I think i didn’t make myself clear 
 I wish to collect inspirations and organize all my graphic assets (formats like JPG, PNG, PSD, XD, AI, FIG....)as well like what Pixa does don&#...

Pinterest is always nice to browse around! Just that when it comes to downloading batch reference it took so much time....yikes! image size and resolution quality is a problem too Miro looks like a n...

thank you Ken! i'll give it a try

Eagle is a powerful management tool. Been using it extensively for a few months. Absolutely loving it. The team is constantly releasing updates all the time, for a non-subscription tool is pretty amaz...

I used to use Pixa on MacOS, but it stop updating for quite some time. Would love to see if there's a replacement for Pixa that will allow me to collect inspirations / moodboards? Thank you!