Brainstorming software for agencies: 6 tools compared for client work

For agencies, the tool that matters is the one that lets a client into a session without letting them into every other client's work. Mural and Miro both do that properly, but only on paid tiers: Miro's guest role starts at Business ($20 per member a month), and on Miro's free plan anyone you invite by email becomes a full team member with access to your whole board list. Budget $10 to $20 per person a month, and check the guest rules before the workshop, not during it.

Most roundups rank these tools on canvas features, which is the wrong axis for agency work. An in-house team brainstorms with people who already share a workspace. An agency brainstorms with outsiders, on work that is confidential, against a clock somebody is being billed for. That changes which limits hurt. Below is the comparison on the axes that actually bite, then the two decisions that decide your bill.

What is the best brainstorming software for an agency?

Mural, if facilitation is a service you sell. Its facilitation layer (timers, private mode so people write before they see each other, structured voting) is the deepest in the category, the template library saves real preparation hours, and its free plan lets unlimited visitors into a mural with view-only rights, which covers client review without a seat.

Miro if your agency does more than workshops: journey maps, architecture diagrams, roadmaps, wireframes. Broader platform, 250-plus integrations, and the same facilitation basics at a slightly shallower depth. FigJam if the agency already runs Figma, because then it costs nothing extra. Those three cover about ninety percent of agency situations.

The comparison that matters for client work

Prices verified against each vendor's published pricing page in August 2026, per user per month, billed annually unless noted.

Can clients join a board without a paid seat?

Sometimes, and the exceptions are expensive. On Mural, unlimited visitors can view a mural on any plan including the free one, but editing requires a member seat. On Miro, visitors (public link, no account) start at Starter, and the proper guest role, where an outsider edits one board without seeing the rest of your workspace, is a Business feature at $20 per member a month.

The trap is Miro's free plan. Invite a client by email there and they are added to the team, not to a board, which means your other clients' boards are in their sidebar. For a multi-client agency that is a confidentiality incident waiting for a slow Tuesday. If you are running client work on a free tier, share a view link or upgrade before the kickoff.

What does brainstorming software cost for an agency?

Take the per-seat number and multiply by everyone in the workspace, not by everyone in the session. That is the mistake that makes budgets wrong. Ten people on Mural Team+ is about $1,200 a year and on Business about $2,160. Ten on Miro Starter is $960 and on Business $2,400.

Most agencies land on the business tier whether they planned to or not, because that is where guest access, granular permissions and SSO live, and those are the things a client's security review asks about. Then audit the member list quarterly. Per-member billing punishes the account manager who joined for one workshop in March and never came back harder than any negotiation will reward you. The full category breakdown is in our brainstorming software cost comparison, and the tier-by-tier detail is on Mural pricing and Miro pricing.

Do agencies need a whiteboard tool at all?

For the workshop, usually yes: a client who paid for a session expects to see one, and the shared canvas is part of the theater as well as the work. For everything either side of the workshop, often no.

The work that actually gets billed happens before and after. Before, someone has to arrive with concepts worth reacting to, because a workshop that starts from an empty board spends its first forty minutes generating the obvious three. After, somebody has to turn a wall of sticky notes into a shortlist with reasons the client will accept. Neither of those is a canvas job. A canvas is a surface: it holds ideas people already had and arranges them neatly.

That is why plenty of agencies run the pair. Keep Mural or Miro for the session, and use a tool that generates and converges for the preparation. Our brainstorming for agencies page covers how that split works in a billable week, and brainstorming for consultants covers the solo version.

Which tool for a client workshop, and which for concept development?

Split the week and the answer gets obvious.

• Concept development (Monday): you need volume and range fast, alone or with one colleague. A generative tool beats a canvas here because there is nothing on the canvas yet.
• Client workshop (Wednesday): Mural or Miro. Private mode first so the client's most senior person does not set the direction in the first ninety seconds, then clustering, then voting.
• Convergence and writeup (Thursday): scoring against agreed criteria, then a shortlist with reasons. Do not do this live; do it with the criteria you agreed before the session.
• Production (the following week): the approved concept becomes actual work, and turning a signed-off direction into on-brand ad copy and images is a separate production step that no ideation tool covers.

The Wednesday piece is the one agencies over-invest in and the Monday piece is the one they under-invest in. If you want the templates for Wednesday, we routed the library tool by tool on Mural brainstorming templates and mind maps, including which ones Mural AI can help fill and on which plan.

What about confidentiality on client work?

Three things to check before the first client touches anything. First, whether your plan has a real guest role, so an invited outsider sees one board and not your workspace. As covered above, on Miro that means Business. Second, whether boards can be private by default, because a shared workspace where every board is visible to every member is fine internally and awkward when two clients compete. Third, what happens when the engagement ends: exporting a board is easy, but proving you removed a client's material is a different task, and it is the one that appears in an MSA.

None of this is exotic, and all of it is cheaper to sort out in procurement than in an incident. It is also the practical reason agencies end up on business tiers.

How do you pick, in one pass?

Answer three questions honestly. Do you sell facilitation as a service, or do you just need a place to put stickies? If you sell it, buy Mural and use the facilitation layer you are paying for. Do you already pay for Figma? Then try FigJam before you buy anything, because your marginal cost is near zero. Does your recurring problem sound like "we need concepts by Thursday and the room is out of ideas"? That is not a canvas problem, and buying a bigger canvas will not fix it.

The wider field, including where each tool genuinely wins, is on our roundup of the best brainstorming software. If you are choosing between a workshop canvas and something that runs the session for you, how to choose brainstorming software walks the evaluation, and idea prioritization covers the Thursday half that decides whether any of it was worth billing.