
IrfanView
FastStone Image Viewer
nomacs
XnView MP
JPEGView
Gwenview
Fragment
You can use Image to view your digital images and photos of many different formats.

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, ImageGlass seems to be more popular. It has been mentioned 42 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | imageglass.org | clientforms.app |
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In their own words, as submitted to SaaSHub.


No description of ImageGlass 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
ImageGlass is recommended for users who need a fast and lightweight image viewer with support for multiple formats. It is ideal for photographers, graphic designers, or anyone who frequently works with a variety of image types and values speed and simplicity over more complex editing features.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
What's new in ImageGlass 6.0 - A lightweight, versatile image viewer
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 ImageGlass 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 ImageGlass 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.


Next on the list, we have ImageGlass. It is a simple picture viewer tool that any normal image viewer could do. However, this tool comes with many small features that you will not find on other image viewers.
In this list, Imageglass is one app that has minimal and modern UI of the app, packed with all basic features an image viewers requires with speed.
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.


> The reliance on crusty old ass applications like those on Windows is actually kinda depressing. macOS is the most consistent OS and Windows 11 the least [1]. With the exception of IrfanView I find neither of those apps... - Source: Hacker News / about 2 years ago
A GPLv3 similar app, very useful, is ImageGlass: https://imageglass.org. - Source: Hacker News / over 2 years ago
If you want to be harassed with updates, check out https://imageglass.org/. Source: over 3 years ago
Tracking ClientForms.app since Dec 2025.
When comparing ImageGlass and ClientForms.app, you can also consider the following products.

IrfanView ... one of the most popular viewers worldwide.
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NovoPsych is a tool that is used for outcome monitoring via conducting psychological tests online.
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FastStone Image Viewer is a fast, stable, user-friendly image browser, converter and editor.
Compare FastStone Image Viewer to ImageGlass or ClientForms.app:

nomacs is a free, open source image viewer, which supports mu
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XnView is a free software that allows you to view, resize and edit your images. It supports more than 500 different formats!
Compare XnView MP to ImageGlass or ClientForms.app:

JPEGView is a small and fast viewer/editor for JPEG, BMP, PNG, GIF and TIFF images.
Compare JPEGView to ImageGlass or ClientForms.app: