I finished v5 of a JVM framework I've spent spent half a decade making

In plain words

Javalin is a JVM framework for building web applications, released in its fifth version after five years of development. It serves developers who need a lightweight option for creating backend services and APIs on the Java Virtual Machine. The framework emphasizes simplicity and ease of use compared to heavier enterprise alternatives.

written from the facts on this page · September 2026

From the sources

Javalin is a Java and Kotlin web framework which focuses on simplicity and Java/Kotlin interoperability. It supports WebSockets and HTTP3, and it uses Virtual Threads (from Project Loom ) by default. Javalin aims to be very lightweight and has a codebase of around 7000 lines of Java/Kotlin code, as well as around 10 000 lines of test (629 tests). The project would not have been possible without the amazingly supportive JVM open-source community. Javalin has been around for five years now and has 161 contributors and 497 forks. 552 pull requests have been merged and 990 issues have been closed. The project has had three million downloads in the past 12 months. I’d like to extend my special…from javalin.io

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  Javalin 1.0 – A Kotlin/Java web framework2017 · javalin.io · ▲271
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  We'd love to share our work with you: Restate, a system for workflows-as-code (durable execution). With SDKs in JS/Java/Kotlin and a lightweight runtime built in Rust/Tokio. https://github.com/restatedev/ https://restate.dev/ It is free and open, SDKs are MIT-licensed, runtime permissive BSL (basically just the minimal Amazon defense). We worked on that for a bit over a year. A few points I think are worth mentioning: - Restate's runtime is a single binary, self-contained, no dependencies aside from a durable disk. It contains basically a…

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  Awk-JVM – A toy JVM in Awk2020 · github.com · ▲180

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  Dev tools · 22d ago · talanoa.email

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  Life & fun · 2022 · 4m3ric4.com