cashapp/zipline

Health v2 · maintenance only

Adoption not part of the score

2298 stars · 208 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Zipline is a Kotlin library that lets Kotlin/JVM and Kotlin/Native programs load and run Kotlin/JS code by embedding the QuickJS JavaScript engine. It enables fetching executable code as easily as fetching data, supporting dynamic updates to app logic without app store releases.

Use cases

• run dynamically downloaded business logic in a mobile app without an app store update
• build a plugin system where users can customize app behavior with Kotlin/JS scripts
• update pricing or payment rules in production apps continuously
• serve fresh daily content like trivia questions or games from a server
• execute sandboxed JavaScript inside a Kotlin/JVM or Kotlin/Native application

When to choose

• you need to hot-update parts of a Kotlin Multiplatform mobile app without waiting for app store review
• you want a safe embedded scripting/plugin system in a JVM or native Kotlin host
• your business rules change frequently and must be deployed server-side

When to avoid

• your app logic rarely changes and app store release cycles are acceptable
• you need to run JavaScript in a browser or Node.js environment rather than embedded in a native/JVM host
• you require full native performance for the dynamic code rather than an interpreted engine

Facets

library · maturity active

interpreter plugin-system serialization sdk developer-tools mobile-development cross-platform programming-languages jvm kotlin-multiplatform quickjs javascript-engine dynamic-code-loading code-hosting continuous-deployment android ios

Member repositories

For agents

markdown · JSON · MCP: product_card(name="cashapp/zipline")