If stsa.org isn't a perfect fit — too pricey, hard to reach from mainland China, or you just want to compare — here are the top-rated nonprofit alternatives, each annotated with how it differs from stsa.org.
Switch target Browse all nonprofitReal competitors identified from our in-depth analysis of stsa.org (those in our directory are clickable):
| Provider | Rating | From | CN | Refund | Region |
|---|---|---|---|---|---|
|
S stsa.org Your pick |
6.0 | Price N/A | — | United States | |
|
T tlar.org |
6.0 | Price N/A | — | Türkiye | |
|
O ohiorheumatology.org |
5.0 | Price N/A | — | United States | |
|
P phpc-mspc.ca |
5.0 | Price N/A | — | Canada | |
|
S slgy.fi |
5.0 | Price N/A | — | Finland | |
|
S sociedadgastro.cl |
5.0 | Price N/A | — | Chile | |
|
A afap-asso.fr |
3.0 | Price N/A | — | France | |
|
I isgtnc.org |
3.0 | Price N/A | — | India | |
|
T tnpciapm.org |
3.0 | Price N/A | — | India | |
|
A aaihp.fr |
2.0 | Price N/A | — | France | |
|
1 100andchange.org |
8.0 | Price N/A | — | United States | |
|
H hl7.org |
8.0 | Price N/A | — | United States | |
|
3 3keys.jp |
7.0 | Price N/A | — | Japan |
Recommendations are based on public ratings and field comparisons, not purchase advice; prices per the official site. Some links are affiliate (rel="sponsored"). For side-by-side comparison see the comparison tool; the full nonprofit list is in the directory.