# opensolon/solon

🔥 Java enterprise application development framework for full scenario: Restrained, Efficient, Open, Ecologicalll!!! 700% higher concurrency 50% memory savings Startup is 10 times faster. Packing 90% smaller; Compatible with java8 ~ java26; Supports LTS. (Replaceable spring)

Repository: https://github.com/opensolon/solon
Canonical: https://ross.abutalabs.com/products/solon
Homepage: https://solon.noear.org
Language: Java
License: Apache-2.0
License Family: permissive
Topics: java, microservice, rpc, rest-api, plugin, no-spring, web-framework, solon, solon-cloud, ioc-framework, aop-framework, remoting, no-servlet, miro-framework, llm, mcp-server, modelcontextprotocol, openai
Last push: 2026-08-24T15:47:47+00:00

## Health v2 (maintenance only)
Score: 95/100 (v2, computed 2026-09-03T02:39:23.370411+00:00)
- activity 99, release rhythm 86, longevity 100
- inputs: {"age_days": 2979, "days_push": 9, "days_rel": 16, "gap_med": 11, "n_releases_24m": 72}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2774, forks 279 (observed 2026-08-28T04:07:19.127746+00:00)

## What it is
Solon is a Java enterprise application development framework built from scratch as a lighter, faster alternative to Spring Boot/Spring Cloud. It provides an IOC/AOP container, web MVC, RPC remoting, cloud microservice plugins, and AI/LLM (MCP, OpenAI) integration, supporting Java 8 through 26 and GraalVM native image.

## Use cases
- build rest apis in java without spring
- lightweight java microservices framework
- replace spring boot with faster startup and smaller packages
- build mcp server in java
- java framework with high concurrency and low memory
- build rpc services in java
- integrate openai llm into java app
- graalvm native image java web app

## When to choose
- you want a Spring Boot alternative with faster startup, lower memory, and smaller artifacts
- you need microservices, RPC, or cloud-native Java apps with a plugin-based ecosystem
- you need broad JDK compatibility (Java 8-26) or GraalVM native image support
- you are building AI/LLM features like MCP servers or OpenAI integrations in Java

## When to avoid
- your team is deeply invested in the Spring ecosystem and its third-party integrations
- you need a framework with a much larger community and hiring pool
- you rely on Spring-specific libraries or conventions that have no Solon equivalent

## Facets
- artifact type: framework
- maturity: active
- function: web-framework, api-framework, rpc, middleware, routing, websocket, mcp, llm-inference, plugin-system
- domain: web-development, backend, microservices, developer-tools, large-language-models, apis
- platform: jvm, cross-platform, cloud
- tags: spring-alternative, no-servlet, ioc-container, aop, graalvm-native-image, rest-api, solon-cloud, mcp-server, openai, lightweight, high-concurrency, ioc, docker

## Member repositories
- opensolon/solon (main) score 95

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:19.127746+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T08:16:35.400214+00:00, confidence not recorded.
  - readme: https://github.com/opensolon/solon (fetched 2026-08-28T04:07:19.127746+00:00, sha baee46896aea)
  - homepage: https://solon.noear.org (fetched 2026-08-29T09:56:02.793287+00:00, sha f2120acf0794)
  - site_page: https://solon.noear.org/article/about (fetched 2026-08-29T09:56:02.803096+00:00, sha abcf3954b76b)
  - site_page: https://solon.noear.org/article/features (fetched 2026-08-29T09:56:02.805283+00:00, sha 475abd3543c0)
  - site_page: https://solon.noear.org/article/learn-quickstart (fetched 2026-08-29T09:56:02.807182+00:00, sha ebc9ac961934)
- Data as of 2026-08-30T08:39:29.467469+00:00.