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Extism is the open source, universal plug-in system. Extend all the software everywhere! Powered by WebAssembly.

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ProveSource is a social proof marketing platform that streams recent customer behaviors on your website to build trust and increase conversions.

Which is more popular?
Based on our record, Extism seems to be more popular. It has been mentioned 25 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | extism.org | provesrc.com |
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What each product offers, as listed by its team.


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Why this product is good
Recommended for
Businesses seeking to improve website conversion rates, e-commerce platforms wanting to increase sales, and marketers looking to build trust and credibility through social proof notifications.
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External articles and on-site reviews we used to compare the two products.


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ProveSource simplifies the process of leveraging social proof to boost conversions. The onboarding is straightforward—just sign up, add one line of code to your website, and configure customizable notifications. From...
FOMO, the Fear Of Missing Out, has been a powerful marketing tool for ages. You can use FOMO Social Proof to create urgency by showing pop-up notifications of recent purchases. However, it's pricey and complex....
ProveSource is also easy to set up and powerful social proof software that helps you customize notification icons, links, texts, and more. It automatically collects data like clicks, hovers, impressions, engagement...
Recommendations tracked on public social media and blogs since March 2021.


Technically WASI 0.1, but I used it (via Extism[0]) to implement a simple login library[1] that works in Rust, Go, and Node. Would be trivial to add other lanugages supported by Extism. Overall I loved the dev experience. [0]:... - Source: Hacker News / 3 months ago
I tinkered with https://extism.org and basically the use case is that they suggest, namely you can extend software in another programming language but without having to setup a container or VMs on the client. They "just" run the code in... - Source: Hacker News / 3 months ago
Check out https://extism.org, it is built for those kinds of use cases. However I think WASI and components could enhance it. - Source: Hacker News / 4 months ago
Tracking ProveSource since Mar 2021.
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