Parabol vs Retro-board vs Scrumlr: Self-Hosted Agile Retrospective Boards (2026)

Agile retrospectives are one of the most important ceremonies in any Scrum team’s workflow. They provide a structured space for teams to reflect on what went well, what didn’t, and what actions to take in the next sprint. While many teams still rely on sticky notes on a physical whiteboard or shared Google Docs, dedicated retrospective board software offers significant advantages: anonymity for honest feedback, voting on action items, historical tracking of improvements, and structured retrospective formats.

In this guide, we compare three open-source self-hosted retrospective board tools — Parabol, Retro-board, and Scrumlr — each offering a different approach to facilitating remote and hybrid team retrospectives.

Comparison Table

Parabol

Parabol is the most comprehensive open-source retrospective platform, offering not just retro boards but also meeting facilitation tools, team health dashboards, and integration with popular development tools.

Key Features

• Multiple meeting types: Retrospectives, check-ins, and estimation poker (planning poker)
• Rich retrospective templates: Starfish, Sailboat, 4Ls, Happy/Sad/Mad, and custom formats
• Anonymity controls: Toggle anonymity per phase to encourage honest feedback
• Action item tracking: Create, assign, and follow up on retrospective action items
• Slack and GitHub integration: Connect your team’s existing tools
• Team analytics: Track participation trends, action item completion, and team health over time
• Meeting facilitation: Built-in timer, phase management, and vote counting

Docker Compose Deployment

Parabol provides Docker deployment configurations in its repository:

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version: '3.8'
services:
  parabol:
    image: parabol/parabol:latest
    ports:
      - "3000:3000"
      - "4000:4000"
    environment:
      - NODE_ENV=production
      - POSTGRES_HOST=parabol-db
      - POSTGRES_PORT=5432
      - POSTGRES_DB=parabol
      - POSTGRES_USER=parabol
      - POSTGRES_PASSWORD=parabol
      - REDIS_HOST=parabol-redis
      - SECRET=s3cr3t-ch4ng3-m3
      - DOMAIN=localhost
    depends_on:
      - parabol-db
      - parabol-redis
    restart: unless-stopped

  parabol-db:
    image: postgres:16
    environment:
      - POSTGRES_DB=parabol
      - POSTGRES_USER=parabol
      - POSTGRES_PASSWORD=parabol
    volumes:
      - parabol-data:/var/lib/postgresql/data
    restart: unless-stopped

  parabol-redis:
    image: redis:7-alpine
    command: redis-server --requirepass r3d1s-p4ss
    volumes:
      - parabol-redis-data:/data
    restart: unless-stopped

volumes:
  parabol-data:
  parabol-redis-data:

Installation

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# Clone and build from source
git clone https://github.com/ParabolInc/parabol.git
cd parabol
docker compose -f docker/stacks/development/docker-compose.yml up -d

# Or use the pre-built Docker image
docker pull parabol/parabol:latest

Retro-board

Retro-board is a lightweight, focused agile retrospective board that prioritizes simplicity and ease of use. It provides exactly what you need for a retro — nothing more, nothing less.

Key Features

• Simple and focused: Clean interface designed specifically for retrospective sessions
• Custom board templates: Create your own retrospective formats with custom columns
• Real-time collaboration: Multiple users can add items simultaneously via WebSockets
• Voting system: Team members can vote on the most important items to discuss
• Lightweight deployment: Simple Docker Compose setup with just PostgreSQL
• No vendor lock-in: Fully self-hosted, MIT licensed, no cloud dependencies

Docker Compose Deployment

Retro-board provides a ready-to-use Docker Compose configuration:

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version: '3'
services:
  postgres:
    image: postgres:16
    hostname: postgres
    environment:
      POSTGRES_PASSWORD: retroboard-secret
      POSTGRES_USER: postgres
      POSTGRES_DB: retroboard
    volumes:
      - database:/var/lib/postgresql/data
    restart: unless-stopped
    logging:
      driver: 'json-file'
      options:
        max-size: '10m'
        max-file: '5'

  backend:
    image: retroboard/backend:latest
    environment:
      DB_HOST: postgres
      DB_PORT: 5432
      DB_NAME: retroboard
      DB_USER: postgres
      DB_PASSWORD: retroboard-secret
    ports:
      - "8080:8080"
    depends_on:
      - postgres
    restart: unless-stopped

  frontend:
    image: retroboard/frontend:latest
    ports:
      - "3000:3000"
    environment:
      REACT_APP_API_URL: http://localhost:8080
    depends_on:
      - backend
    restart: unless-stopped

volumes:
  database:

Installation

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# Clone and run with Docker Compose
git clone https://github.com/antoinejaussoin/retro-board.git
cd retro-board
docker compose up -d

# Access at http://localhost:3000

Scrumlr

Scrumlr is a collaborative retrospective web application developed by inovex. Written in Go with a modern frontend, it offers a clean, performant experience for team retrospectives.

Key Features

• Go backend: High-performance, low-memory server implementation
• Multiple retrospective templates: Start with pre-built formats or create custom ones
• Real-time sync: Instant updates across all participants via WebSockets
• Voting and prioritization: Dot voting system for identifying top discussion items
• Simple deployment: Single Docker container with SQLite — no external database required
• Clean, modern UI: Intuitive interface that works on desktop and mobile

Docker Deployment

Scrumlr provides a Dockerfile for straightforward containerization:

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# Dockerfile for Scrumlr
FROM golang:1.22-alpine AS builder
WORKDIR /app
COPY go.mod go.sum ./
RUN go mod download
COPY . .
RUN CGO_ENABLED=0 go build -o scrumlr ./cmd/server

FROM alpine:3.19
RUN apk --no-cache add ca-certificates
WORKDIR /root/
COPY --from=builder /app/scrumlr .
EXPOSE 8080
CMD ["./scrumlr", "--port", "8080"]

For a production setup with PostgreSQL:

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version: '3.8'
services:
  scrumlr:
    build:
      context: .
      dockerfile: Dockerfile
    ports:
      - "8080:8080"
    environment:
      - SCRUMRLR_DATABASE_HOST=scrumlr-db
      - SCRUMRLR_DATABASE_PORT=5432
      - SCRUMRLR_DATABASE_NAME=scrumlr
      - SCRUMRLR_DATABASE_USER=scrumlr
      - SCRUMRLR_DATABASE_PASSWORD=scrumlr
    depends_on:
      - scrumlr-db
    restart: unless-stopped

  scrumlr-db:
    image: postgres:16-alpine
    environment:
      - POSTGRES_DB=scrumlr
      - POSTGRES_USER=scrumlr
      - POSTGRES_PASSWORD=scrumlr
    volumes:
      - scrumlr-db-data:/var/lib/postgresql/data
    restart: unless-stopped

volumes:
  scrumlr-db-data:

Installation

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# Clone and build
git clone https://github.com/inovex/scrumlr.io.git
cd scrumlr.io
docker build -t scrumlr:latest .
docker run -d -p 8080:8080 scrumlr:latest

# Or use the pre-built image (if available)
docker run -d -p 8080:8080 ghcr.io/inovex/scrumlr:latest

Choosing the Right Retro Tool

Choose Parabol if:

• You want a complete agile meeting platform — retrospectives, check-ins, and estimation poker in one tool
• Your team needs action item tracking and follow-up between retrospectives
• You want integrations with Slack, GitHub, and Jira
• Team analytics and historical meeting data are important for continuous improvement
• You don’t mind a more complex deployment (PostgreSQL + Redis required)

Choose Retro-board if:

• You want the simplest possible retrospective tool — boards and voting, nothing else
• Your team prefers a lightweight, focused application without meeting management overhead
• You need a straightforward Docker Compose deployment
• You value a clean, no-frills interface that gets straight to the retrospective

Choose Scrumlr if:

• You want a Go-based backend with high performance and low resource usage
• You prefer simple deployment — ideally a single container with SQLite
• You need a modern, responsive UI that works well on both desktop and mobile
• You value an actively maintained project from a reputable engineering organization (inovex)

For more on agile team tools, see our Wekan vs Kanboard vs Planka Kanban guide and NocoDB vs Baserow vs Directus no-code comparison.

FAQ

What is an agile retrospective and why does it matter?

An agile retrospective is a regular meeting held at the end of each sprint where the team reflects on what went well, what didn’t, and what improvements to make. It’s one of the core Scrum ceremonies and is essential for continuous improvement. Digital retrospective boards enable remote and hybrid teams to participate effectively, providing structure, anonymity options, and historical tracking that physical whiteboards can’t match.

Can these tools replace in-person retrospectives?

Digital retro boards complement rather than replace in-person discussions. They provide structure and documentation, but the real value comes from the conversation. The best approach is to use the tool for collecting and organizing feedback, then have a facilitated discussion (via video call or in person) to dig into the top items. All three tools support real-time collaboration for this purpose.

Are retrospective boards suitable for non-Scrum teams?

Absolutely. While retrospectives originated in Scrum, any team that wants structured reflection benefits from them. Kanban teams use retrospectives to identify workflow bottlenecks. Non-technical teams use them for project post-mortems. The structured format (what went well, what didn’t, action items) is universally applicable.

How do voting systems work in retrospective tools?

Most tools use a “dot voting” system where each team member gets a fixed number of votes (typically 3-5) to allocate across the items collected during the retro. Items with the most votes are prioritized for discussion. This democratic approach ensures the team focuses on what matters most rather than what the loudest person wants to discuss.

Do I need to self-host these tools?

Self-hosting gives you full control over your retrospective data — which is sensitive team feedback. All three tools are open-source and designed for self-hosting. This is especially important for organizations with strict data governance requirements or teams working on confidential projects. Cloud-hosted alternatives exist, but self-hosting ensures data never leaves your infrastructure.

What retrospective formats are commonly supported?

Common formats include: Mad/Sad/Glad (emotional check-in), Start/Stop/Continue (action-oriented), 4Ls (Liked, Learned, Lacked, Longed For), Sailboat (visual metaphor with wind, anchors, rocks, island), Starfish (Keep, Drop, Create, Stop, More Of), and custom formats. Parabol supports the widest variety out of the box, while Retro-board and Scrumlr allow you to create custom column layouts.