For an agency whose clients are not comfortable with software, Couac is the safest bet on the client side: you send a magic link, the client opens the page, annotates what is wrong and follows progress, without ever creating an account or seeing your back office. Several other tools here are excellent, but some still force a signup or an interface that loses a non-technical client in thirty seconds.
Search intent
You run an agency and you want a feedback tool that your clients, often non-technical, can use without you standing behind them at every step of acceptance.
Selection criteria
Zero account, zero password
This is filter number one, and it cuts out half the market. If your client has to create an account, confirm an email then pick a password before they can even point at a bug, they will give up and email you instead. Look for a tool that works off a plain link: they click, they are in, they annotate. The test is brutal but honest: if your own mother cannot use it without you, neither can your client.
Annotating must be obvious, not learned
A client does not learn a tool, they either use it or avoid it. The expected reflex is universal: I see a problem, I click on it, I type. No mode to switch on, no layer to understand, no tutorial to watch. Be wary of interfaces that stack formats and tabs: every extra button is one more client who will not see it through to the end.
The client must see things moving
A client who sees nothing move will chase you. By email, by phone, on a Saturday. Favor a tool where they find their reports and their status on the same link, without asking: open, in progress, fixed. That visibility does two precious things: it reassures them, and it spares you the "so where are we?" nudges that punctuate every acceptance round.
Your client should see YOUR agency, not your tool
On the client side, the tool should never steal the show. A clean link, your look, ideally your own domain: the client feels like they are still with you. Look at what white-label actually allows, and above all what the client glimpses of your back room. The right feedback tool makes itself invisible; what stays on screen is your agency.
Tools to compare
Couac
Best for: Agencies whose clients are not technical and need to be made self-sufficient without training or a hotline.
Everything rests on the magic link. You share a URL, the client opens the page, clicks on what is wrong and types, with no account and no view of your back office. They find their reports and status on that same link, so they chase you less. The widget blends into your design and can run on your own domain in white-label, so the client feels like they are with you from start to finish.
Couac is focused on feedback and bug tracking on web pages. If your client also needs to review PDFs, videos or print banners in the same place, that is not Couac's turf; look at a multi-format proofing tool.
BugHerd
Best for: Agencies that want the visual pin straight on the page, simple to grasp for a non-technical client.
BugHerd is one of the best-known names in visual feedback: the client pins a comment on the element, types, and it is placed. The gesture is intuitive and the client-side onboarding stays accessible, which reassures people who are not at ease with tools.
Check the entry path depending on your plan: the client experience is clean, but make sure no account or invitation step breaks the momentum of a client in a hurry.
Pastel
Best for: Agencies that want a client to sign off on a mockup or a page in two clicks, with nothing to install.
You paste a URL, Pastel turns it into an annotatable canvas, you share the link. The client comments, done. For a client who just has to say what they like or not on a page, it is hard to make anything simpler to explain.
Pastel stays a one-off commenting tool. For a client you support over time, with feedback that comes back week after week, tracking quickly feels too light; they will have to start from a link each time.
Markup.io
Best for: Agencies whose client needs to review both a site and other assets (image, PDF) in the same place.
Markup.io widens the gesture beyond the website: the client annotates a URL like a file, and everything is filed on the project side. Handy when one client hands you a site, a visual and a document to sign off without juggling three tools.
That breadth has a downside on the client side: the more formats the tool covers, the denser the screen they discover. For a client who only comes to flag an issue on a page, it can be a lot at once.
Marker.io
Best for: Agencies that want a clean reporting widget on the client side, sitting on the site during acceptance.
On the client side, Marker.io shows up as a discreet button on the site: they click, describe, attach a screenshot. The capture experience is polished and clear, which helps a non-technical client report without second-guessing.
The client has no real space of their own to follow progress: tracking lives in your project tool, not in front of them. They have to trust you or ask where things stand, which brings the nudges back.
zipBoard
Best for: Agencies whose client has to review e-learning, PDF or SCORM on top of the web.
zipBoard covers a wide range of assets, the web included. If your client already works on training modules or heavy documents, giving them a single place to comment on everything can make their life easier than spreading across several tools.
The more formats the tool embraces, the heavier the interface gets on the client side. For a non-technical profile who just wants to flag a bug on a page, test the first screen they will see yourself first; it can intimidate them.
The client will not read your docs, accept it
A client will not open your guide, will not watch your onboarding video and will not create an account to report that a button is misplaced. It is not bad will, it is the reality of someone who has their own actual job to do. So any tool that adds a step between "I see the problem" and "I reported it" loses. The client will fall back on the reflex they master: the draft email, the blurry screenshot, the voice message. Choose the tool by putting yourself in their shoes, not yours: open the link on your phone, knowing nothing, and see if you can do it in ten seconds.
The magic link, the agency's secret weapon
The detail that truly decides is the entry point. A link the client clicks and lands straight on the page, ready to annotate, beats the most beautiful interface in the world hidden behind a signup wall. That is Couac's whole bet with its magic-link shared boards: you send a URL, the client annotates the page and follows their reports, without ever creating an account or glimpsing your back office. But beyond the tool, keep the principle: every time you consider an option, count the number of clicks and passwords between your client and their first comment. The higher that number climbs, the more you will pay in emails sent on their behalf.
Keep them at home: the white-label client experience
When your client goes through a tool that plasters its own brand everywhere, two things happen: they wonder why you are forcing yet another piece of software on them, and they get a peek at the backstage you would rather keep to yourself. White-label is not an aesthetic whim, it is a matter of relationship. A link on your domain, a widget in the agency's colors, no parasite mentions: the client feels like they stay in your world from start to finish. Look closely at how far each tool's white-label goes, because it is often reserved for higher plans or limited to a logo. On the client side, that is exactly where the feeling of working with an agency, rather than with one more SaaS subscription, is won or lost.
Frequently asked questions
My client is genuinely at odds with technology. Which one won't lose them?
Aim for a tool where they click a link and annotate the page right away, with no account and no install. Couac works through magic-link shared boards: you send the URL, they point at the issue, that is it. Pastel is also very simple for a one-off sign-off. Rule out from the start any tool that asks them to create an account, confirm an email or understand a Kanban before they can speak up.
How do I avoid spending my acceptance round on the phone explaining the tool?
Choose a tool meant to be guessed, not learned. The good test: send the link to a non-technical friend with no explanation and see if they know what to do. If they hesitate, your client will too, and you will be back on the phone. Favor a direct-link entry, a single gesture (click then type) and a status visible on the client side so they no longer have to ask where their reports stand.
Will the client see my back office or the agency's other projects?
It depends on the tool, and it is a real white-label question. With Couac, the client only reaches the magic-link shared board: they see their own reports on the page in question, never your back office or your other clients. Check this on every tool in your list, because some expose more backstage than you would want, and the client experience suffers for it.