Extism
No liveness check has reached it yet; it is registered on GitHub and has been in the index since 13 Oct 2026. How this is checked
Extism is an open-source framework for embedding WebAssembly plug-ins into applications. It provides host SDKs for languages including Python, Node, Ruby, Rust, Go, PHP, C/C++, and OCaml, with sandboxed plug-in execution for developers building extensible software.
Inferred · not functionally tested
Overview
6 featuresPurpose: Adding secure, portable, cross-language plug-ins to applications without building custom extension systems.
Inferred · not functionally tested
Audience: software developers building extensible applications
Inferred · not functionally tested
Functions: Unknown
Interfaces: API: indicated (inferred, not tested) · MCP: unknown · CLI: indicated (inferred, not tested) · Self-hosting: indicated (inferred, not tested)
Recorded constraints: pricing: open_source · license: BSD-3-Clause · platforms: WEB · deployment: browser, embeddable, self_hosted, cloud_managed, cli, api_only
Constraint provenance is unknown; confirm requirements with the publisher.
Record sources: extism.org · github.com. These links do not verify the individual claims.
Extism is a Frameworks & SDKs project. Inferred · not functionally tested: It focuses on adding secure, portable, cross-language plug-ins to applications without building custom extension systems. Inferred · not functionally tested: It is built as an open-source project for software developers building extensible applications. Basis unknown · not verified: Extism is open source under the BSD-3-Clause license. Basis unknown · not verified: It runs on the web, embeddable surfaces, the command line, and API, and it can be self-hosted.
It is developed by Dylibso, Inc., and it first shipped in 2022. The project is developed in the open on GitHub with 5.8k stars and 4 commits in the last 90 days. Inferred · not functionally tested: Among its 6 catalogued features are webAssembly plugins, sandboxed execution, and Cross-language SDKs.
Summary written by a language model from the project’s public pages.
Tasks: Inferred · not functionally tested
- WebAssembly plugins
- Sandboxed execution
- Cross-language SDKs
- Plugin embedding
- Host SDKs
- Extism Playground
Topics: Inferred · not functionally tested
Built with & integrations
- Claude Code
- commit 051b765bb6ab · since Oct 2026
- Cursor
- commit 7df994165231 · since Oct 2026
- Cloudflare
- cf-ray header · cf-cache-status header
Trust & compliance
Indexing history
1What PulseGate has recorded for this listing
Frequently asked questions about Extism
- What is Extism?
- Inferred · not functionally tested: Extism focuses on adding secure, portable, cross-language plug-ins to applications without building custom extension systems. It is catalogued under Frameworks & SDKs on PulseGate.
- Who is Extism for?
- Inferred · not functionally tested: Extism is an open-source project built for software developers building extensible applications.
- Does Extism have a free plan?
- Basis unknown · not verified: Yes — Extism is open source under the BSD-3-Clause license and free to use.
- What platforms does Extism run on?
- Basis unknown · not verified: Extism runs on the web, embeddable surfaces, the command line, and API. It can also be self-hosted.
- Is Extism still active?
- The GitHub repository shows 4 commits in the last 90 days.
- What projects are similar to Extism?
- Similar projects tracked by PulseGate include modebox, TenantX, and ASP Net boilerplate.modeboxTenantXASP Net boilerplate
- Who develops Extism?
- Extism is developed by Dylibso, Inc.
- How long has Extism been around?
- Extism first shipped in 2022.
Also in Frameworks & SDKs
Same category — not a similarity match