Software Alternatives, Accelerators & Startups

OpenSilver VS Lightspark

Compare OpenSilver VS Lightspark and see what are their differences

OpenSilver logo OpenSilver

Open-source re-implementation of Silverlight on modern browsers using WebAssembly.

Lightspark logo Lightspark

The Lightspark project
  • OpenSilver Landing page
    Landing page //
    2022-11-18
  • Lightspark Landing page
    Landing page //
    2021-10-02

OpenSilver features and specs

  • Cross-Platform Compatibility
    OpenSilver enables developers to create applications that run on multiple platforms, including web browsers, by leveraging WebAssembly, which enhances the reach and accessibility of applications originally written in Silverlight.
  • Silverlight Code Reusability
    Since OpenSilver supports C# and XAML, much of the existing Silverlight code can be reused, minimizing migration efforts and reducing time and costs associated with redevelopment.
  • WebAssembly Based Performance
    By utilizing WebAssembly, OpenSilver applications can achieve near-native performance, leading to efficient and responsive user experiences in web applications.
  • Open Source Flexibility
    As an open-source project, OpenSilver offers developers the ability to contribute to and modify the platform, fostering a community-driven environment and encouraging innovation.
  • Integration with Modern Web Technologies
    OpenSilver allows integration with modern web technologies and frameworks, enabling developers to enhance applications with contemporary features and functionalities.

Possible disadvantages of OpenSilver

  • Incomplete Feature Support
    Not all of Silverlight's features are fully supported in OpenSilver, which might necessitate additional workarounds or re-implementations for complex applications.
  • Learning Curve for Migration
    Developers familiar with Silverlight may need to learn new patterns and practices related to web development and WebAssembly when transitioning to OpenSilver.
  • Browser Compatibility
    While WebAssembly aims to be universally compatible, some differences in performance and behavior might occur across various browsers, potentially requiring additional testing and optimization.
  • Community and Support Maturity
    As a relatively new and open-source project, OpenSilver might have a less mature support ecosystem compared to more established platforms, impacting the availability of resources and community support.
  • Dependency on WebAssembly
    OpenSilver's reliance on WebAssembly means that any limitations or ongoing development challenges associated with WebAssembly could directly impact the capabilities and performance of OpenSilver applications.

Lightspark features and specs

  • Open Source
    Lightspark is an open-source project which means its source code is freely available, allowing developers to inspect, modify, and contribute to its development.
  • Cross-Platform Compatibility
    It is designed to work across multiple platforms, including Linux and Windows, providing flexibility and accessibility for various users.
  • Active Development
    The project is actively maintained, ensuring that it receives regular updates and bug fixes, which contribute to improving performance and stability.

Possible disadvantages of Lightspark

  • Limited Flash Support
    Lightspark focuses on supporting newer versions of Flash, which may not cover all the features of legacy Flash content, potentially limiting its effectiveness in certain situations.
  • Performance Issues
    Users may experience performance issues, such as slower playback and higher resource consumption, depending on their system configuration and the complexity of the Flash content.
  • Compatibility Gaps
    There may be compatibility gaps with some Flash content, as not all features and use cases are fully supported, leading to inconsistent user experiences.

Category Popularity

0-100% (relative to OpenSilver and Lightspark)
Online Services
39 39%
61% 61
Product Presentation
37 37%
63% 63
Tool
100 100%
0% 0
IDE
0 0%
100% 100

User comments

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Social recommendations and mentions

OpenSilver might be a bit more popular than Lightspark. We know about 13 links to it since March 2021 and only 9 links to Lightspark. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

OpenSilver mentions (13)

  • Show HN: Browser-based .NET IDE with visual designer, NuGet packages, code share
    - 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 write C# code. XAML.io is currently in tech preview. It's built on OpenSilver (https://opensilver.net), a from-scratch reimplementation of the WPF API (subset) using modern .NET,... - Source: Hacker News / 5 months ago
  • .NET MAUI Is Coming to Linux and the Browser, Powered by Avalonia
    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 / 8 months ago
  • Revisiting WASM for F#
    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 unlikely to ever go out again. Even if Microsoft themselves leave Blazor today, it can still work, the burden of creating a fork and keeping blazor alive will certainly be big but... - Source: dev.to / over 2 years ago
  • Seeking Advice on Product Positioning for new .NET-based SDK/Framework
    Under the Hood: Technically, XR# integrates Three.js, A-Frame.js, and the Microsoft .NET to WASM compiler (like in Blazor). Itโ€™s built on our decade-long experience with OpenSilver, a contemporary Silverlight alternative. Source: almost 3 years ago
  • WASI: A New Kind of System Interface
    Nah, I appreciate the wonderfull work of those WebAssembly people that allowed me to have Java applets, Flash and Silverligh running again in the browser. https://leaningtech.com/cheerpj/ https://leaningtech.com/cheerpx-for-flash/ https://opensilver.net/ Thanks for making the revenge of plugins a reality. - Source: Hacker News / over 4 years ago
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Lightspark mentions (9)

  • When SVG almost got network support for raw sockets
    Not the first attempted Flash reimplementation[1,2,3]. The GNU one didnโ€™t work all that well back in the day as far as I remember, but then Flash was a moving target at the time. [1]: https://www.gnu.org/software/gnash/ [2]: http://lightspark.github.io/ [3]: https://github.com/mozilla/shumway. - Source: Hacker News / over 3 years ago
  • Good flash emulator for walfas?
    A true emulator would be something like Ruffle or Lightspark. Ruffle I know doesn't work well with Walfas last time I checked. I don't know about Lightspark. Source: almost 4 years ago
  • Flash game to Html5 converter
    Lightspark, a browser plugin written in C++. It's a work in progress, not every flash content will work. Modern mainstream browsers don't support running it within a page, so flash content needs to be run in a standalone lightspark app, or in some lesser known browsers. Source: almost 4 years ago
  • How and where do I tell CMake where my C/CXX compiler is?
    I'm trying to install lightspark on my computer, and it hinges on launching a shell script that mainly executes a CMake command. When I try ./build.sh (the name of the shell script), I get a bunch of lines of errors. The first one I think is major is CMake Error at /usr/share/cmake-3.23/Modules/CMakeTestCCompiler.cmake:69 (message): The C compiler "/usr/bin/cc" is not able to compile a simple test... Source: about 4 years ago
  • What "legacy" software are you still forced to use in 2022 that you wish would die?
    I'm having alot of fun with this post actually. I wouldn't be surprised if there was some alternative or workaround for whatever you guys need to run. For example, instead of the clunky Java, we have this. Instead of Flash, try this. Source: over 4 years ago
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What are some alternatives?

When comparing OpenSilver and Lightspark, you can also consider the following products

Flash Player 2021 - 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.

Ruffle - An open source Flash player

SuperNova Player - SuperNova Player allows systems to play .SWF files in a standalone player launched from any browser.

X (Twitter) - 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.

Newgrounds Player - Can play Flash files offline.

CheerpX for Flash - its adobe flash player in webassembly