
StartPlaying.Games
Roll20
Tableplop
Find tabletop RPG groups across the world. Connect with Dungeons and Dragons players, Game Masters and TTRPG communities for online and in-person games.

Decode and verify SSL/TLS certificates online. Extract X.509 details including issuer, validity, SAN, and fingerprint. Fast, secure, and browser-based.

Which is more popular?
Based on our record, Cert Decoder seems to be more popular. It has been mentioned 1 time since March 2021.
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | groupfinder.gg | certdecoder.com |
| Pricing | ||
| Platforms | — | |
| Company | Startup from Estonia · 1 - 9 employees · 2025 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


On Groupfinder you can post your player profile, or your group and be publicly visible to all interested. Whether you are looking to play a game online or at your local town or city, you can make sure your post reaches the right players.
Cert Decoder is a free online tool that helps you decode X.509 SSL/TLS certificates in PEM format. It instantly shows important information like the issuer, expiry date, SAN entries, and fingerprint. All data is processed locally in your browser, so nothing is ever sent or stored elsewhere.
What each product offers, as listed by its team.


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
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Groupfinder and Cert Decoder.
Groupfinder's answer
The platform was first created in 2021, but initially only for the Estonian TTRPG community. We saw that users found it extremely helpful and useful to find players and form groups. In 2025, we redesigned the entire platform and opened it up to the world. Month by month users keep finding out about Groupfinder and have become active users.
Cert Decoder's answer:
I built certdecoder.com over the weekend for my own needs. Sometimes in my work, I need to verify and check certificate details.
Cert Decoder's answer:
certdecoder.com was built using just JavaScript and HTML—simple, fast, and with all processing happening locally in your browser, so no certificate data is sent to any server
Cert Decoder's answer:
certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.
Groupfinder's answer
Platform is a hub for both free and paid games. With advanced filtering search users can find a game that fits their preferences, location, timezone and game system.
Cert Decoder's answer:
Simple, fast, and reliable. Some similar tools can’t even decode basic certificates. I rigorously tested my tool with many real-world certificates and covered several edge cases where competitors fall short.
Cert Decoder's answer:
certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.
Groupfinder's answer
Groupfinder prioritizes both players and groups. Offering both sides of the table a chance to post their own public profiles.
Share your experience with using Groupfinder and Cert Decoder. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Tracking Groupfinder since Apr 2026.
Why? Because I built certdecoder.com and couldn’t find a decent place to submit it. So I said screw it — I’ll build my own. With blackjack and hookers. - Source: dev.to / over 1 year ago
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