
Wallpaper Engine
Wallper
Lively Wallpaper
RainWallpaper
Backdrop
Vivid Walls
ScreenPlay
Live wallpaper for Mac - 4K cinematic wallpapers, lock screen support, multi-monitor, under 2% CPU. No login, no subscription. Download free.

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 | wallspace.app | certdecoder.com |
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| Company | Startup from the United Kingdom · 1 - 9 employees · 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


The live wallpaper app for Mac that won't touch your Battery. Lock screen support, native Swift - no subscription, low CPU, no login.
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
Walkthroughs and reviews on video.
4K Live wallpaper on macOS in 15 seconds - Wallspace.app
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Wallspace.app and Cert Decoder.
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
Wallspace.app's answer
Anyone who enjoys and like to customise their macs.
Cert Decoder's answer:
certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.
Wallspace.app's answer
More curated live wallpaper collections for mac and free.
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.
Wallspace.app's answer
Free Live wallpaper app and support lock screen wallpapers, unlike other heavily paid apps.
Share your experience with using Wallspace.app 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 Wallspace.app 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
When comparing Wallspace.app and Cert Decoder, you can also consider the following products.

Wallpaper Engine enables you to use live wallpapers on your Windows desktop.
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Live 4K wallpapers for your Mac. Fast, native, and fully customizable.
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What is it? Lively is a Free and Open-Source Software (FOSS) for animated desktop wallpapers.
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RainWallpaper is a powerful live wallpaper engine that allows you to use various types of...
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Backdrop is a simple utility to fill your screen with a giant blank window.
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A native macOS engine for animated scene wallpapers. Real-time particles, shader effects, puppet animation. Compatible with Wallpaper Engine scene files.
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