
calibre
Amazon Kindle
Cool Reader
Google Play Books
Sumatra PDF
Okular
ReadEra
FBReader is an e-book reader for various platforms. Features:

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, FBReader seems to be more popular. It has been mentioned 10 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | fbreader.org | clientforms.app |
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In their own words, as submitted to SaaSHub.


No description of FBReader 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
FBReader is recommended for readers who value customization in their reading experience and need support for various e-book formats. It's ideal for those who read on multiple devices and platforms, as it offers sync features and wide compatibility.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Review FBReader on Linux Ubuntu
More videos
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing FBReader 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 FBReader 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.


FBReader is a lightweight, multi-platform ebook reader, free but not open-source, supporting various formats like ePub, fb2, mobi, rtf, html etc. It includes access to popular network libraries from where you can...
The Favorite Book Reader (FBReader) is a free app that used to be open source. As such, it used to be available for a multitude of devices but now caters to iOS and Android users. There’s also a beta version in...
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.


I use fbreader, it's probably in your disto's repository or you can get in from fbreader.org. Source: almost 4 years ago
I've been using FBreader for years, and it can use the built in Android TTS. https://fbreader.org/. Source: about 4 years ago
Based on what's on ZLibrary, various formats, though principally PDF, ePub, Mobi (Kindle), DJVU (similar to PDF), FB2, and a few others. Most ebook readers (with the exception of Amazon's own Kindle reader) can read virtually all of... - Source: Hacker News / about 4 years ago
Tracking ClientForms.app since Dec 2025.
When comparing FBReader and ClientForms.app, you can also consider the following products.


NovoPsych is a tool that is used for outcome monitoring via conducting psychological tests online.
Compare NovoPsych to FBReader or ClientForms.app:

Amazon Kindle software lets you read ebooks on your Kindle, iPhone, iPad, PC, Mac, BlackBerry, and...
Compare Amazon Kindle to FBReader or ClientForms.app:

Fast and small cross-platform eBook reader for desktops and handheld devices
Compare Cool Reader to FBReader or ClientForms.app:

Google Play Books lets you search, preview, and buy millions of books using Google Book Search.
Compare Google Play Books to FBReader or ClientForms.app:

Sumatra PDF is a slim PDF/DjVu/EPUB/XPS/CHM/CBR/CBZ/MOBI viewer for Windows.
Compare Sumatra PDF to FBReader or ClientForms.app: