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Which is more popular?
Based on our record, Flattr seems to be more popular. It has been mentioned 11 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | flattr.com | opalstack.com |
| Pricing | — | |
| Company | Startup from Sweden · 1 - 9 employees | — |
| Listed in |
What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using Flattr and Opalstack. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Https://flattr.com/ used to have such a system without the cryptocurrency nonsense and it went about as far as you'd expect. On the other hand, it didn't falsely claim your funds were going to creators, so in that sense they're still a... - Source: Hacker News / about 1 year ago
Flattr was a kind of a version of that (although billed as "donations"), and it recently shut down. https://flattr.com/. - Source: Hacker News / over 2 years ago
There was https://flattr.com/ and, more recently, https://twitter.com/coil But, yes, a complete chicken-and-egg problem. - Source: Hacker News / over 2 years ago
Tracking Opalstack since Sep 2023.
When comparing Flattr and Opalstack, you can also consider the following products.


Patreon enables fans to give ongoing support to their favorite creators.
Compare Patreon to Flattr or Opalstack:

Ko-fi offers a friendly way for content creators to get paid for their work.
Compare Ko-fi to Flattr or Opalstack:


A free, fast and friendly way to accept donations 💰
Compare Buy Me A Coffee to Flattr or Opalstack:

PayPal is the faster, safer way to pay online without sharing financial details, send and receive money or accept credit and debit cards as a seller
Compare PayPal to Flattr or Opalstack: