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micronaut-core

JVM framework for microservices and HTTP servers with compile-time dependency injection

Website ↗ Repository on GitHub ↗

Stars: 6.4k
License: Apache-2.0
Last commit: Nov 2026
Last release: Nov 2026
Language: Java

Stars, last 29 weeks+85

6,352 on 21 Apr 20266,437 on 10 Nov 2026

From GitHub's daily star counts.

Checked 12 Nov 2026 on GitHub.

Overview

Micronaut Framework is a Java, Kotlin and Groovy framework for building HTTP servers, microservices, message-driven apps and command-line apps. It does dependency injection and AOP at compile time instead of through runtime reflection and bytecode generation, which the README says gives fast startup and lower memory use. It is a general application framework with no built-in AI features.

Who it is for: JVM developers building microservices or HTTP backends in Java, Kotlin or Groovy

Strengths

DI and AOP are computed at compile time, with minimal reflection and no runtime bytecode generation
Microservice pieces included: distributed config, service discovery, HTTP routing, client-side load balancing
Supports Java, Kotlin and Groovy
Uses Semantic Versioning 2.0.0, with @Experimental and @Internal APIs excluded

Weaknesses

No AI, LLM or agent features in this repository
Not a hosted backend: you write and deploy the JVM application yourself
Building from source needs Gradle and publishes to the local Maven repository
Compile-time processing differs from Spring's runtime model, so Spring code needs porting

What it needs

no GPU
Needs JVM, Gradle

What changed

v3.10.19 ↗ (opens in a new tab)11 Nov 2026Security fix
GHSA-C856-M48R-3GPC, GHSA-72P5-8F28-XWP2, GHSA-FV5H-6PJP-G363, GHSA-HM9J-M8H9-32V9, GHSA-432J-9H93-PV45, GHSA-C79Q-P83R-9VPM, GHSA-WGXM-75PH-Q27X, GHSA-WCGP-MMWM-X2X2, GHSA-P72J-V3QH-V5MM, GHSA-JFWR-QRPQ-5G48, GHSA-H2J4-VR48-C4VV, GHSA-GJ4V-R6X3-66JP, GHSA-JJ39-PP85-XJ49, GHSA-8RRH-X2CH-P2VV, GHSA-2J79-MGC9-V76R, GHSA-HGJ7-52CP-647P, GHSA-MJJJ-6MX9-P8PX, GHSA-5HMW-VF9Q-XQHV, GHSA-WV7M-PMVH-98H9, GHSA-5PXM-5867-GJC9, GHSA-MFRV-8FW9-56VQ, GHSA-GPXF-V9P3-4HH5, GHSA-38PJ-464P-88JF, GHSA-973F-VVMG-R76V, GHSA-596X-F5J6-XVHC. “Micronaut Core 3.10.19 is a security patch release. It fixes 25 GitHub Security Advisories and updates the managed Micronaut Security version to 3.11.3.”
v4.10.37 ↗ (opens in a new tab)11 Nov 2026Security fix
GHSA-C856-M48R-3GPC, GHSA-72P5-8F28-XWP2, GHSA-FV5H-6PJP-G363, GHSA-PGXH-VG8F-GJ4J, GHSA-4J6J-V86M-5XV7, GHSA-HM9J-M8H9-32V9, GHSA-432J-9H93-PV45, GHSA-P72J-V3QH-V5MM, GHSA-C79Q-P83R-9VPM, GHSA-WGXM-75PH-Q27X, GHSA-XH4X-VJ47-4PX7, GHSA-35QG-26HC-QR84, GHSA-WCGP-MMWM-X2X2, GHSA-6V2Q-5RCC-QFMC, GHSA-JFWR-QRPQ-5G48, GHSA-H2J4-VR48-C4VV, GHSA-JJ39-PP85-XJ49, GHSA-GJ4V-R6X3-66JP, GHSA-82W6-G6GH-PJRV, GHSA-WJXW-JJR4-4MQR, GHSA-8RRH-X2CH-P2VV, GHSA-5G2V-X779-WR6W, GHSA-5HMW-VF9Q-XQHV, GHSA-MJJJ-6MX9-P8PX, GHSA-2J79-MGC9-V76R, GHSA-HGJ7-52CP-647P, GHSA-64W5-89V4-549V, GHSA-WV7M-PMVH-98H9, GHSA-9MFM-8WR5-M838, GHSA-MFRV-8FW9-56VQ, GHSA-J3JR-9QW4-M252, GHSA-FR2F-WW99-XGCC, GHSA-5PXM-5867-GJC9, GHSA-GPXF-V9P3-4HH5, GHSA-38PJ-464P-88JF, GHSA-973F-VVMG-R76V, GHSA-596X-F5J6-XVHC. “Micronaut Core 4.10.37 is a security-focused patch release. It addresses 37 GitHub Security Advisories across HTTP routing, servers and clients, WebSockets, server-sent events, and static resource ha…”
v5.2.23 ↗ (opens in a new tab)11 Nov 2026Security fix
GHSA-C856-M48R-3GPC, GHSA-72P5-8F28-XWP2, GHSA-FV5H-6PJP-G363, GHSA-HM9J-M8H9-32V9, GHSA-XH4X-VJ47-4PX7, GHSA-432J-9H93-PV45, GHSA-WGXM-75PH-Q27X, GHSA-C79Q-P83R-9VPM, GHSA-JFWR-QRPQ-5G48, GHSA-35QG-26HC-QR84, GHSA-P72J-V3QH-V5MM, GHSA-WCGP-MMWM-X2X2, GHSA-6V2Q-5RCC-QFMC, GHSA-H2J4-VR48-C4VV, GHSA-GJ4V-R6X3-66JP, GHSA-JJ39-PP85-XJ49, GHSA-82W6-G6GH-PJRV, GHSA-WJXW-JJR4-4MQR, GHSA-8RRH-X2CH-P2VV, GHSA-5G2V-X779-WR6W, GHSA-5HMW-VF9Q-XQHV, GHSA-MJJJ-6MX9-P8PX, GHSA-2J79-MGC9-V76R, GHSA-HGJ7-52CP-647P, GHSA-88M6-WJJG-MC7G, GHSA-4J6J-V86M-5XV7, GHSA-J3JR-9QW4-M252, GHSA-FR2F-WW99-XGCC, GHSA-WV7M-PMVH-98H9, GHSA-MFRV-8FW9-56VQ, GHSA-5PXM-5867-GJC9, GHSA-9MFM-8WR5-M838, GHSA-64W5-89V4-549V, GHSA-GPXF-V9P3-4HH5, GHSA-38PJ-464P-88JF, GHSA-973F-VVMG-R76V, GHSA-XCCF-9G9P-4Q66, GHSA-596X-F5J6-XVHC. “Micronaut Core 5.2.23 is a patch release with security fixes and framework improvements. It addresses 38 GitHub Security Advisories.”

From the release notes. No flag means the note does not say so, not that the upgrade is safe.

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How to choose

Check what you get self-hosted versus only in the managed cloud.
See how it handles auth, row-level security and file storage.
Look at the client SDKs for your stack.

Health

Releases: 87 in the last 12 monthsLast one yesterday
Top contributor: 42% of commits1,205 of 2,875 in the last 12 months
Security advisories: 52 published ↗ (opens in a new tab)On GitHub, in the last 12 months; 11 critical or high
OpenSSF Scorecard: 7.6 out of 10 ↗ (opens in a new tab)Run by OpenSSF on 9 Nov 2026

Read from GitHub, deps.dev and OpenSSF on 11 Nov 2026. Bots and coding-agent accounts are left out of the commit counts. Not part of the score: how we check.

License in plain words

Apache-2.0 Permissive

Use it at work: Yes
Change it and rebrand it: Yes
Sell it or host it for others: Yes

Your part: Keep the notices and mark the files you change. It also grants you the contributors’ patent rights.

A plain summary, not legal advice. Read the license on GitHub ↗ (opens in a new tab)

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#94 of 146 in Backends, databases and hosting on Archestack, as of 12 Nov 2026.

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