
Flash Player 2021
SuperNova Player
X (Twitter)
Newgrounds Player
CheerpX for Flash
Ruffle
Gnash
Open-source re-implementation of Silverlight on modern browsers using WebAssembly.

SysAid
"Server Security Cloud Security Office 365 Security Penetration Testing Load Testing Security Review & Audit Managed Detection & Response Compliance Analysis"

Which is more popular?
Based on our record, OpenSilver seems to be more popular. It has been mentioned 13 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | opensilver.net | seqops.io |
| Pricing | — | |
| Company | — | Startup from Sweden · 10 - 19 employees |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of OpenSilver yet.
SeqOps is a cybersecurity firm offering advanced security solutions such as vulnerability scanning, penetration testing, cloud and server security, and compliance analysis. We help businesses safeguard digital infrastructure with tailored, automated, and proactive protection services.
What each product offers, as listed by its team.


Possible disadvantages
No features have been listed yet.
An editorial look at what each product does well and who it suits.


No analysis of OpenSilver 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.


Share your experience with using OpenSilver and SeqOps. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


- XAML autocompletion, AI error fixing, split editor views The visual designer is the differentiator: 100+ drag-and-drop controls for building UIs. But the NuGet and sharing features work even if you ignore the designer entirely and just... - Source: Hacker News / 7 months ago
Beside already mentioned, there is OpenSilver[1]. Supports Silvelight and WPF. Renders to DOM+WASM. They are also planning support for MAUI. [1] https://opensilver.net/. - Source: Hacker News / 10 months ago
I would also say that IF blazor worked on a browser plugin like silverlight did, today that's not the case it is built on the webassembly standard which and it is being adopted in the browsers which means once it gets on the web, it is... - Source: dev.to / over 2 years ago
Tracking SeqOps since Sep 2025.
When comparing OpenSilver and SeqOps, you can also consider the following products.

Want to fix "This plugin is not supported" and "Adobe Flash Player is blocked" error messages? This extension will remove those messages and allow you to play Flash in any website with a single click.
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SysAid is an AI-first Help Desk & ITSM platform powered by Agentic AI
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SuperNova Player allows systems to play .SWF files in a standalone player launched from any browser.
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Connect with your friends and other fascinating people. Get in-the-moment updates on the things that interest you. And watch events unfold, in real time, from every angle.
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its adobe flash player in webassembly
Compare CheerpX for Flash to OpenSilver or SeqOps: