hekailiang/squirrel
squirrel-foundation is a State Machine library, which provided a lightweight, easy use, type safe and programmable state machine implementation for Java. observed · 2026-08-28
Health v2 · maintenance only
32/100
- Activity 0
- Release rhythm 35
- Longevity 100
Flags: no_releases no_license
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 4904
- days_rel: n/a
- days_push: 820
- n_releases_24m: 0
Adoption not part of the score
2256 stars · 537 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
squirrel-foundation is a lightweight, type-safe, and extensible finite state machine (FSM) library for Java. It lets developers declaratively define states, events, transitions, and actions with fluent builders and annotation-driven configuration.
Use cases
- implement a state machine in java
- model atm or order lifecycle states
- build event-driven state transitions in enterprise java
- create a lightweight fsm library alternative for jvm
- handle state entry/exit actions and transition callbacks
- define type-safe state machines with fluent api
When to choose
- you need a lightweight, embeddable state machine in a Java project
- you want type-safe, programmable FSM definitions with fluent builders
- you need diagnosable state machines with transition actions and listeners
When to avoid
- you need a distributed workflow engine rather than an in-process FSM
- your project is not on the JVM
- you need a visual state chart designer or heavy orchestration features
Facets
library · maturity maintenance
state-management workflow-automation developer-tools developer-tools jvm state-machine fsm finite-state-machine event-driven type-safe algorithms automation
2 sources
- readme: https://github.com/hekailiang/squirrel · fetched 2026-08-28 · 9ea728b8f5de
- homepage: http://hekailiang.github.io/squirrel/ · fetched 2026-08-29 · 4be8f3eb5b0d
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| hekailiang/squirrel | main | 32 |
For agents
markdown · JSON · MCP: product_card(name="hekailiang/squirrel")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem