
Wasmer
QuickJS
Lapce
Kata Containers
OpenCL
PostSharp
Extism is the open source, universal plug-in system. Extend all the software everywhere! Powered by WebAssembly.

Launch Deck by Hyperspace
Wefunder
Visible.vc
Republic
StartEngine
Evalyze
SeedInvest
SeedForge turns one 30-minute session into a shareable profile that investors explore before your first call. One link covers every investor, so you stop repeating yourself.
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 | seedforge.com |
| Pricing | ||
| Company | — | Startup from the Czech Republic · 1 - 9 employees |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Extism yet.
SeedForge turns one 30-minute AI session into a shareable profile that investors explore before your first call. Founders connect their own data (traction, product, financials), and the profile stays current as the company grows, so investors see the real state of the business whenever they look....
What each product offers, as listed by its team.


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An editorial look at what each product does well and who it suits.


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Overall verdict
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Recommended for
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using Extism and SeedForge. For example, how are they different and which one is better?
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 SeedForge since Jun 2026.
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