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MuPDF is a lightweight PDF and XPS viewer.

NovoPsych
Clinical assessment tools for psychologists, therapists and occupational therapists. Send measures by secure link and review scored results, severity bands and reports.

Which is more popular?
Based on our record, MuPDF seems to be more popular. It has been mentioned 21 times since March 2021.
Website, pricing, platforms and company facts side by side.
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In their own words, as submitted to SaaSHub.


No description of MuPDF yet.
Clinical assessment tools for psychologists, therapists and occupational therapists. Send measures such as the PHQ-9, GAD-7 and DASS-21 by secure link and get scored results, severity bands and reports ready to review. The catalogue also includes DSM-5 ADHD assessments and autism screening tools....
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
MuPDF is recommended for users who need a lightweight and fast PDF viewer that can handle a variety of document formats. It is particularly suitable for those who prefer open-source software and require a tool that can be easily integrated into custom applications. Additionally, it is ideal for developers looking for a library to incorporate PDF functionality into their software products.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
MuPDF - Lightweight PDF Viewer - Linux XFCE
More videos
No ClientForms.app videos yet. You could help us improve this page by suggesting one.
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing MuPDF and ClientForms.app.
ClientForms.app's answer:
Frontend: Next.js 15 (React 19), Tailwind CSS Backend: Supabase (PostgreSQL, Row-Level Security) Authentication: Clerk Payments: Stripe Hosting: Vercel (Sydney region) Database hosting: Supabase (Australian data residency)
ClientForms.app's answer:
Psychologists who assess ADHD and autism. Typically private practice, solo or small group (1-5 clinicians), currently using paper forms and spending hours on admin per assessment. They want something that works and is secure.
ClientForms.app's answer:
Neurodivergent-first design. Most digital forms just replicate paper online. ClientForms is built specifically for ADHD and autism patients - progress bars with time remaining (helps with time blindness), softer colours instead of harsh white, sticky headers so you always know where you are. The forms are designed to reduce anxiety and improve completion rates.
ClientForms.app's answer:
Most clinical software treats patients as an afterthought. ClientForms is designed specifically for neurodivergent users who are filling out the forms, progress indicators, time estimates, calmer colours, predictable layouts. One link, no signup required, works on any device. Patients just open and complete.
Share your experience with using MuPDF and ClientForms.app. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


However, MuPDF App Kit has been discontinued. This discontinuation affects numerous Android & iOS PDF viewers and editors relying on MuPDF App Kit libraries, rendering them incapable of delivering PDF functionalities...
MuPDF is another small PDF reader. MuPDF allows users to view and edit PDF files, fill out forms and leave annotations on the document. Another feature of MuPDF is that it allows the user to convert their PDF file...
We have no reviews of ClientForms.app yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


Sioyek uses the MuPDF engine, which supports EPUB: https://mupdf.com/. - Source: Hacker News / over 2 years ago
MuPDF mini (version 1.23.3a): Minimalist viewer for PDF, XPS, CBZ, unprotected EPUB, and FB2 documents. Source: about 3 years ago
Mupdf is the mupdf of epub; it supports epub and other formats beyond pdf¹. When I've had really large files I've used mupdf to read them a few times, as it seems to be far better at handling them than other tools. ¹ https://mupdf.com/. - Source: Hacker News / about 3 years ago
Tracking ClientForms.app since Dec 2025.
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