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Should I use Ilastik?

Interactive machine learning for (bio)image analysis - ilastik.org

Depends. Use it if you're a researcher segmenting or counting cells in microscopy images without coding — it's free and field-proven. Skip it if you need production ML, vendor support, or general-purpose image software.

Confidence

High. Based on 25+ public sources; review snippets were truncated, so verbatim user quotes were unavailable.

Ratings

  • Value for money
  • Ease of use
  • Feature depth
  • Support quality
  • Security posture

Pricing

$0

ilastik (all workflows)

ModelNot disclosed
Monthly feesNot disclosed
HardwareNot disclosed
Free tierYes

Best for

  • Life scientists analyzing microscopy images
  • Cell counting and segmentation without coding
  • Zero-budget academic labs
  • Pipelines feeding Fiji, napari, or CellProfiler

Not for

  • Production ML teams needing scale, deployment, or vendor support
  • General-purpose photo editing or design work
  • Buyers wanting SLAs or paid support — none exists
  • Cloud-first workflows — it's a local desktop app

Gotchas - check before you buy

medium

Expect to budget for a good workstation; users report slowdowns on big images

medium

Ilastik's .h5 output format trips up CellProfiler handoffs

medium

No paid support — help comes from community forums and occasional developer replies

low

Model and annotation export to other tools is limited; mild lock-in risk

Pros and cons

Pros

  • Completely free and open source
  • Peer-reviewed in Nature Methods (2019)
  • Train by painting example pixels — no coding required
  • Integrates with KNIME pipelines; napari and Fiji plugins exist
  • Developers actively answer questions on the forum

Cons

  • Large images demand serious workstation hardware
  • Desktop app; requires local installation and setup
  • Handing results to CellProfiler via .h5 can break
  • Support is community forums only; no vendor SLA

Sources & method

Analyzed 10/05/2026 - 15 sources - No known vulnerabilities found in the sources reviewed.

official x5review x7security x2news x1

Key stats

  • Value for money: 5/5

    Rating

  • $0

    Starting price

  • 15

    Sources

  • Analyzed

  • Value for money: 5/5. Entirely free; no license or subscription
  • Ease of use: 4/5. Repeatedly described as simple, user-friendly
  • Feature depth: 4/5. Segmentation, object classification, counting, tracking workflows
  • Support quality: 3/5. Community forum support; no vendor SLA
  • Security posture: 3/5. Published security policy; no known vulnerabilities
  • $0 Price Free, open source
  • Yes Free tier Entire app is free
  • Nature Methods Peer-reviewed 2019 paper

Pricing

ilastik (all workflows)

$0

  • Full desktop app
  • All ML workflows
  • Community support via forums

Security

No known vulnerabilities found in the sources reviewed.

What users say

Lab researchers on Reddit and the image.sc forum use it for cell counting and segmentation, valuing the no-code approach while flagging hardware demands.

Companies that use it

  • Broad Institute (Carpenter-Singh Lab)15
  • KNIME13
Full analysis

Based on 25+ public sources; review snippets were truncated, so verbatim user quotes were unavailable.

Free, peer-reviewed interactive ML for bioimage segmentation. Great for cell biologists; useless for production ML or general photo work.

Methodology

Based on 25+ public sources; review snippets were truncated, so verbatim user quotes were unavailable.

Sources

  1. ilastik — Aboutilastik.org
    official
  2. ilastik: interactive machine learning for (bio)image analysis — Nature Methodsnature.com
    review
  3. ilastik — Downloadilastik.org
    official
  4. ilastik GitHub repositorygithub.com
    official
  5. Image Segmentation Made Easy: A Guide to Ilastik for Non-expertstowardsai.com
    review
  6. Computer recommendation for better ilastik performance? — image.scforum.image.sc
    review
  7. Ilastik output .h5 to be read by CellProfiler has issues — image.scforum.image.sc
    review
  8. Pixel classification in ilastik — image.scforum.image.sc
    review
  9. Exporting annotations — discussion about format — image.scforum.image.sc
    review
  10. Ways to automate cell counting? — Reddit r/labratsreddit.com
    review
  11. ilastik Security — LFX Insightsinsights.linuxfoundation.org
    security
  12. Product security page — ilastikilastik.org
    security
  13. Ilastik Integration — KNIMEknime.com
    official
  14. Ilastik — napari plugin Alfa Cohortchanzuckerberg.github.io
    official
  15. Customizing a Model for Fiber Segmentation — Carpenter-Singh Lab, Broad Institutecarpenter-singh-lab.broadinstitute.org
    news

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