
Barrier
Input Director
ShareMouse
DisplayFusion
Ultramon
Actual Multiple Monitors
Dual Monitor Taskbar
Cross-platform software for sharing your mouse and keyboard between multiple computers

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, Synergy seems to be a lot more popular than Cert Decoder. While we know about 284 links to Synergy, we've tracked only 1 mention of Cert Decoder.
Website, pricing, platforms and company facts side by side.
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| Website | symless.com | certdecoder.com |
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| Platforms | — | |
| Company | 2001 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


Synergy is a software application developed by Symless. It is used for sharing a keyboard and mouse between multiple computers, and is useful in situations where several PCs are used together, with a monitor connected to each, but are to be controlled by one user. The user needs only one keyboard...
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.


Overall verdict
Why this product is good
Recommended for
Synergy is recommended for IT professionals, developers, graphic designers, and other users who regularly work with multiple computers and need an efficient way to manage them all at once.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Review - Synergy by Symless - Multi Machine Network Control Software
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Synergy 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
Cert Decoder's answer:
certdecoder.com is primarily built for developers, sysadmins, cybersecurity enthusiasts, and DevOps engineers.
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.
Share your experience with using Synergy and Cert Decoder. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Synergy is yet another software that lets you work on separate computers with the same input devices. It helps you save all the clutter caused by the cables of a traditional KVM. What’s more, it works even when the...
We have no reviews of Cert Decoder yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


I did something similar last year with a monitor without built-in KVM but with good DCC support (Ultrasharp U3417W) and Synergy [0]. I use Synergy as part of my desk setup already, but needed a way to view the UI of a normally headless... - Source: Hacker News / 4 months ago
Just use Synergy, the OG "soft KVM": https://symless.com/synergy. - Source: Hacker News / over 1 year ago
I continue to use Notepad++ despite having tried every other editor and IDE under the sun. This, of course, drives every person completely insane when I explain that my "IDE" is: - Notepad++ for editing, pretty much stock, no plugins -... - Source: Hacker News / almost 2 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
When comparing Synergy and Cert Decoder, you can also consider the following products.

Barrier is a cross-platform software for sharing your mouse and keyboard between multiple computers...
Compare Barrier to Synergy or Cert Decoder:

Control multiple windows systems with one keyboard/mouse. Share a keyboard and mouse across multiple windows system.
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With its easy setup and high level of versatility, ShareMouse is a great tool if you're looking to use a single mouse and keyboard across multiple computers.
Compare ShareMouse to Synergy or Cert Decoder:

DisplayFusion will make your multi-monitor life much easier.
Compare DisplayFusion to Synergy or Cert Decoder:

UltraMon is a piece of software built to help with the management of multiple screens on the same computer system. Without software like this, taking full advantage of an expanded desktop space can be difficult.
Compare Ultramon to Synergy or Cert Decoder:

Actual Multiple Monitors is a software utility which offers the comprehensive solution to improve the functionality of Windows user interface for comfortable and effective work with multi-monitor configurations.
Compare Actual Multiple Monitors to Synergy or Cert Decoder: