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

Wallpaper Engine
Wallper
Backdrop
Lively Wallpaper
Wallspace.app
ScreenPlay
iWallpapers HD
Walyro is a video wallpaper app for Mac. Set your own clips as live wallpapers, with per-display control, offline playlists, and menu bar controls.

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.
|
|
|
|
|---|---|---|
| Website | certdecoder.com | walyro.com |
| Pricing | ||
| Platforms | ||
| Company | — | 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


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.
Walyro is a live wallpaper app for Mac. Instead of pulling from an online gallery, it turns your own videos into animated desktop wallpapers and keeps everything on your device. Drop in an MP4 or MOV and it plays as your background, up to 4K. You can preview a clip on each display before applying...
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
No analysis of Walyro yet.
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Cert Decoder and Walyro.
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.
Walyro's answer:
I wanted my own videos living on my desktop without uploading them to someone's cloud or making yet another account. The Mac apps I tried were built around their own galleries, and Wallpaper Engine, the app people always point to, doesn't run on Mac at all. So I built the one I wanted: point it at your own clips, keep the whole library on the device, and make it feel native instead of a web wrapper. That starting point shaped the rest, from previewing each display before you apply a wallpaper to pausing playback the moment you go fullscreen or switch to battery.
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
Walyro's answer:
Walyro is a fully native macOS app, with no Electron or other cross-platform runtime. It's written in Swift with SwiftUI and AppKit for the interface, Combine for state, and AVFoundation and AVKit for video playback. In-app purchases use StoreKit 2, and launch-at-login uses ServiceManagement.
Cert Decoder's answer
certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.
Walyro's answer:
Mac users who want their desktop to feel personal and who care about keeping files on their own machine. That includes people coming from Wallpaper Engine on Windows who want a native Mac option, multi-monitor setups that want a different scene on each screen, and anyone with their own clips (footage they shot, renders, or edits) who would rather use those than pick from a stock library. The common thread is wanting control over the wallpaper without sending anything to the cloud.
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.
Walyro's answer:
Choose Walyro if you want your own videos on your desktop rather than a prebuilt gallery, and if you'd rather keep everything on your Mac. Nothing uploads, there's no account, and there's no subscription: you download it free and pay once to unlock the full app. It still covers what the others are known for, per-display wallpapers, up to 4K, and playlists that rotate on their own, while staying native and light on the CPU. If what you want is a large online catalog of ready-made wallpapers, a gallery-first app may suit you better. Walyro is for people who want to use their own clips.
Cert Decoder's answer
certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.
Walyro's answer:
Walyro is a consumer app used by individual Mac users, so there are no named business customers to list.
Walyro's answer:
Most Mac wallpaper apps hand you a gallery to browse. Walyro starts from your own footage instead. You point it at your MP4 or MOV clips and it plays them as live wallpapers up to 4K, with a different one on each display. The whole library stays on your Mac, with no online catalog, no account, and no tracking. It's a native Swift and SwiftUI app, so it pauses on fullscreen and eases off on battery to stay light on the CPU.
Share your experience with using Cert Decoder and Walyro. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


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
Tracking Walyro since Aug 2026.