Short answer: for a one-off analysis, use a free browser fishbone diagram maker or draw.io and stop reading here. For recurring team sessions, Miro at $8 per member per month is the pragmatic pick. For diagrams that go into a regulated audit trail, Lucidchart or Visio. The tool matters far less than most comparison articles suggest — what matters is whether the diagram survives a live workshop and whether the export lands in your report. This page compares seven options against those two questions.
All seven tools at a glance
| Tool | Free tier | Entry paid price | Real-time collaboration | Best for |
|---|---|---|---|---|
| 5xWhys Fishbone Maker | Unlimited, no account | — | No | One analysis, done now |
| draw.io | Unlimited, no account | — | Via cloud storage | Full drawing control, free |
| Miro | 3 editable boards | $8 / member / mo, billed yearly | Yes, strong | Remote team workshops |
| Creately | 3 canvases | $5 / mo billed annually ($8 monthly) | Yes | Cheapest paid tier |
| Lucidchart | 3 documents, 75 shapes each | US$9 (Individual), US$10 / user (Team) | Yes, on Team | Documentation that must look formal |
| Microsoft Visio | None | $5.00 / user / mo (Plan 1), $15.00 (Plan 2), paid yearly | Limited | Organisations already standardised on it |
| Canva | Generous; enough for a fishbone | Pro / Business tiers, regional pricing | Yes | Diagrams that go in front of customers |
The five things that actually matter
Most software comparisons rank features nobody uses during a root cause analysis. After running enough sessions, the list of things that decide the outcome gets short:
- Does it survive live editing in front of a group? During a fishbone session you are typing what people say while they watch. Any tool that needs three clicks to add a branch breaks the rhythm of the conversation, and the conversation is the actual deliverable.
- Does the export drop into your report? A PNG or PDF that pastes into a corrective action report, an 8D report or a QMS record. A link to a live board is not an export — it dies with the license.
- Does everyone who needs to read it have access? The quality manager who reviews your analysis in six months will not buy a seat to open it.
- Are the categories preset? 6M for manufacturing, 6P for services. Retyping the framework every time is a small tax you pay forever. Our fishbone guide covers which framework fits which problem.
- What happens at the free-tier ceiling? Every freemium tool here caps you at three boards or documents. That is fine for an experiment and painful once fishbones become part of how the team works.
Tool by tool
5xWhys Fishbone Maker — free, no account
Our own tool, so read this with that in mind. It does one thing: 6M, 6P or custom categories, causes and sub-causes, PNG export, nothing uploaded to a server. No login, no board limit, works offline once loaded.
Where it loses: no real-time multi-user editing and no cloud storage — the analysis lives in your browser tab. If four people in four cities need to type at once, use Miro. If you need the diagram tomorrow from a different machine, export it or use the Excel, Word and PDF template instead.
Open the fishbone diagram maker →
draw.io — free, unlimited, more control than you need
Free and open source, runs in the browser or as a desktop app, no account required, no ceiling on diagrams. It has no opinion about fishbones, which is both the strength and the cost: you get complete control over the drawing and you build the spine yourself. Saves to your own Google Drive, OneDrive or disk, so access does not depend on a subscription.
Choose it when you want a free tool with no limits and you do not mind drawing the structure by hand.
Miro — the practical choice for remote sessions
Miro is a whiteboard first and a diagramming tool second, which is exactly right for cause-and-effect work: the messy stage where people throw causes at the wall is the point. Sticky notes, simultaneous cursors, and a template library.
Free tier: 3 editable boards, 7,000+ templates, 250+ integrations — but no private boards and no guest roles. Paid: Starter at $8 per member per month billed yearly, Business at $20, Enterprise custom from 30 members.
Where it loses: the output looks like a whiteboard. For an audit file you will redraw it somewhere else.
Creately — cheapest way out of the free tier
Drag-and-drop shapes, configurable branch structures, comments on the canvas, and the lowest entry price in this comparison: $5 per month billed annually, versus $8 if you pay monthly. Team is also $5 per user per month billed annually; Business is $89 per month. The free tier gives you three canvases.
Where it loses: smaller ecosystem than Miro or Lucidchart, so it is a harder sell if your organisation standardises tooling centrally.
Lucidchart — when the diagram has to look formal
Precise, grid-aligned output that does not look like a brainstorm. Good fit when the fishbone becomes an attachment to something official.
Free tier, and the number worth knowing: 3 editable documents and 75 shapes per document, plus 100 templates. A six-category fishbone with five causes each and a handful of sub-causes runs roughly 40 to 50 shapes, so a normal diagram fits — a large workshop diagram can hit the ceiling mid-session. Paid: US$9 for Individual, US$10 per user for Team, which adds commenting and version history. Premium trial lasts seven days.
Where it loses: it feels like drafting software. Nobody thinks out loud in it.
Microsoft Visio — only if you already have it
No free tier. Plan 1 is $5.00 per user per month and Plan 2 is $15.00 per user per month, both paid yearly; Visio is also bundled into some Microsoft 365 commercial plans, and one-time desktop versions still exist. It produces documentation auditors accept without discussion, which in a regulated environment is worth more than any feature.
Where it loses: single-author by nature. Teams brainstorm elsewhere and redraw the result in Visio.
Canva — for diagrams that face outward
Not a diagramming tool, but the free tier is generous and the output is presentable, so it earns a place when the fishbone goes into a client deck or a training slide rather than an engineering file. Paid Pro and Business tiers exist; pricing is regional, so check your own currency rather than trusting a number in an article.
Where it loses: no real cause-and-effect structure — you are arranging boxes that happen to look like a fishbone.
Which one, by situation
| Your situation | Use this | Why |
|---|---|---|
| One incident, need the diagram today | Free browser maker or draw.io | Zero setup, zero cost, export and move on |
| Remote team, weekly RCA sessions | Miro | Live collaboration beats diagram quality during a session |
| Everyone in one room | Whiteboard, then redraw | Nothing digital keeps up with six people talking |
| Regulated industry, audit trail | Lucidchart or Visio | Output auditors accept; version history |
| Paying out of your own pocket | Creately | $5 per month billed annually is the floor here |
| Client-facing deck or training | Canva | Presentable without design work |
| Handing the method to a team that has no tools | Excel, Word or PDF template | Everyone already has a spreadsheet; nobody needs a license |
The uncomfortable part
Software does not make a cause-and-effect analysis better. The two failure modes we see most often are unaffected by tooling: categories treated as the answer instead of a prompt, and a diagram that ends at causes without a single owner or date attached to anything. A beautiful Lucidchart diagram with no corrective actions is a wall decoration.
If you are choosing between tools, you have already decided to run the analysis, which is the part that matters. Pick the one your team will actually open on a Monday morning, and spend the saved effort on facilitating the session and on validating the top causes with data.
Not sure a fishbone is even the right method for your problem? The RCA method selector asks four questions and names one, or see how the methods differ in our root cause analysis tools comparison.
FAQ
What is the best free fishbone diagram software?
For a single analysis you rarely need to pay. A dedicated browser-based maker gives you 6M, 6P or custom categories and a PNG export with no account; draw.io is free and unlimited if you want full drawing control. Miro, Lucidchart and Creately all have free tiers, but each caps you at three boards or documents — fine for occasional use, painful once fishbones become routine.
Does Lucidchart's free plan work for a fishbone diagram?
Usually, but check the shape count. As of August 2026 the free plan allows 3 editable documents and 75 shapes per document. A six-category fishbone with five causes each and a few sub-causes lands around 40 to 50 shapes, so a normal diagram fits. A large workshop diagram can hit the ceiling mid-session, which is the worst moment to find out.
Do I need special software to make an Ishikawa diagram?
No. An Ishikawa diagram is a spine, six branches and text. A whiteboard, a spreadsheet template or a free online maker all produce a valid diagram. Software only decides three things: whether the diagram survives live editing, whether the export lands cleanly in your report, and whether the people who read it later need a license.
Which fishbone tool is best for a team workshop?
Whatever your team already has open. Real-time collaboration matters more than diagramming features during a session, so Miro or Creately if the group is remote. If everyone is in one room, a whiteboard and a photo beat any tool, and you redraw the clean version afterwards.
Is Visio still worth it for root cause analysis?
Only if your organisation already standardises on it. There is no free tier: Plan 1 is $5.00 per user per month and Plan 2 is $15.00, both paid yearly as of August 2026. It is precise and produces documentation auditors accept, but it is a single-author tool — nobody brainstorms in Visio.
What should a fishbone export look like for a report?
One readable image at presentation resolution, plus the cause list as text. Auditors and managers read the list; the picture is context. That is why an export locked behind a paid tier, or available only as a link to a live board, causes friction later — a link expires with the license, an image does not.
Related
- Fishbone diagram maker — free, no login, 6M / 6P / custom categories
- Fishbone template — Excel, Word and PDF
- How to create a fishbone diagram — the seven steps
- Fishbone diagram examples — worked cases
- How to facilitate a fishbone session
- Root cause analysis: complete guide