Open-core, self-hosted feature flag management platform.

Русский

можно. — a feature flag server for teams of any size. Toggle features in production without deployment, roll out gradually, segment your audience — all from a single dashboard.

cd web && npm run storybook   # http://localhost:6006

Storybook shows every UI component in an isolated catalog with documentation.

● ● ●

Flag dashboard

All flags on one screen. Toggle features in production and development with a single click — no deploy, no waiting, no risk to users.

Activation panel

Set your rollout percentage — 30% of users, VIP segment, Russia only. All in one window: slider, segment picker, conditions. Zero config files.

● ● ●

Overview dashboard

The first screen after login. Key project metrics in one place: flag status across environments, cross-environment drift, activity feed, and an onboarding checklist for new projects.

Run the project locally (make dev) to see the interface.

# docker-compose.yml
services:
  postgres:
    image: postgres:15-alpine
    environment:
      POSTGRES_DB: feature_flags
      POSTGRES_USER: flags_user
      POSTGRES_PASSWORD: flags_password
    volumes:
      - pgdata:/var/lib/postgresql/data

  mozhno:
    image: mozhnodev/mozhno:latest
    ports:
      - '8080:8080'
    environment:
      MOZHNO_DB_URL: jdbc:postgresql://postgres:5432/feature_flags
      MOZHNO_DB_USERNAME: flags_user
      MOZHNO_DB_PASSWORD: flags_password
      MOZHNO_JWT_SECRET: ${MOZHNO_JWT_SECRET}
    depends_on:
      - postgres

volumes:
  pgdata:

# Generate a JWT secret for production (≥32 characters or Base64 ≥32 bytes).
# For dev you can skip this — the server auto-generates a random key.
export MOZHNO_JWT_SECRET=$(openssl rand -base64 32)  # or plain text ≥32 characters

docker compose up -d

Open http://localhost:8080 — the web dashboard is already built into the server.

Full compose with healthchecks and pgAdmin — docker-compose.yml.

Server — Spring Boot 4.0 / JDK 25. Web UI — React 19 SPA (Vite, Tailwind CSS 4, Radix UI). SDKs fetch flag rules once and evaluate locally.

Access model: the active project is carried in the JWT (project_id claim). All resources (flags, segments, contexts, API keys, audit, etc.) are scoped to that project; mutation rights depend on the role (ADMIN/DEVELOPER/VIEWER). A project is created once during bootstrap and cannot be deleted — use reset to start fresh.

SDKs live in separate repositories:

• Java SDK — dev.mozhno:mozhno-client-java, JDK 17+
• JavaScript/TypeScript SDK — @mozhno/client-js, browser + Node.js

See each repo for installation and docs.

Swagger UI — http://localhost:8080/swagger-ui.html. OpenAPI 3.1 spec at /v3/api-docs.

Requirements: JDK 25 (server), JDK 17+ (SDK), Node.js 24, PostgreSQL 15+.

The fastest way is via make (root Makefile):

make dev           # Postgres + hints to start server/web
make server-run    # build web static assets + run the server (dev profile)
make web-dev       # web UI with HMR
make server-test   # server tests
make web-test      # web tests

docker compose up -d postgres
cd server && ./gradlew :mozhno-app:bootRun
cd web && npm ci && npm run dev

cd server && ./gradlew check   # Server tests
cd web && npm test             # Web tests

docker compose up -d postgres
cd server && ./gradlew :mozhno-app:bootRun
cd web && npm ci && npm run dev

cd server && ./gradlew check   # Server tests
cd web && npm test             # Web UI tests