
RxDB
PouchDB
Firebase
GUN
PostgreSQL
MongoDB
Meteor
SignalDB is a reactive, local-first JavaScript database designed for modern web applications. It combines signal-based reactivity with powerful local data management and real-time synchronization capabilities.

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, SignalDB should be more popular than Cert Decoder. It has been mentioned 3 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | signaldb.js.org | certdecoder.com |
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In their own words, as submitted to SaaSHub.


SignalDB is a client-side database optimized for modern web applications, offering a MongoDB-like interface with robust TypeScript support to improve development speed and ensure type safety. SignalDB supports creating an optimistic UI for responsive, dynamic interfaces and offers versatile local...
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
Possible disadvantages
An editorial look at what each product does well and who it suits.


No analysis of SignalDB yet.
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 SignalDB and Cert Decoder.
SignalDB's answer
The creator of SignalDB, Max Nowack, was inspired by his past experiences working with Meteor.js, which offered a seamless developer experience, particularly in handling real-time data synchronization and reactivity. Over time, as he explored other frameworks and tools like Apollo/GraphQL, FeathersJS, Firebase, Appwrite, Supabase, and RxDB, he found that none of them matched the Developer Experience of Minimongo and Meteor on the frontend side. The discovery of signals in SolidJS led him to grasp its connection to the reactivity he had previously worked with in Meteor, which eventually inspired the creation of SignalDB to bring Meteor-like reactivity to modern JavaScript frameworks.
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.
SignalDB's answer
JavaScript, TypeScript
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
SignalDB's answer
SignalDB is unique for its MongoDB-like interface, TypeScript support, optimistic UI, and signal-based reactivity across multiple frameworks. It offers a universal interface that integrates well with various JavaScript frameworks and libraries through reactivity adapters, including Angular, Solid.js, Preact, Vue, among others. SignalDB's schema-less design, in-memory storage, and rapid query performance simplify data management, enhancing the developer experience significantly.
SignalDB's answer
A person might choose SignalDB over its competitors for several reasons:
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.
SignalDB's answer
Developers looking for a reactive local JavaScript database solution that easily integrates with various JavaScript frameworks and libraries, who appreciate a MongoDB-like interface and TypeScript support for a type-safe development environment.
Cert Decoder's answer:
certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.
SignalDB's answer
Cert Decoder's answer:
certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.
Share your experience with using SignalDB 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.


SignalDB is a reactive, signal-based, client-side JavaScript database designed for modern web apps. It offers a powerful MongoDB-like interface for data handling through an intuitive API with first-class TypeScript support. This database... - Source: dev.to / over 2 years ago
I'm trying to achieve something similar with SignalDB: https://signaldb.js.org/. - Source: Hacker News / almost 3 years ago
Learn more about SignalDB and also check out the documentation at https://signaldb.js.org. - Source: dev.to / almost 3 years ago
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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