
FileInfo.com
FileProInfo
GroupDocs
Groupdocs.app
Convertio
File Converter
FileFormat.com
Large computer file extension library with detailed explanation of each file type with links to download free or associated software programs.

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, File-Extensions.org seems to be more popular. It has been mentioned 1 time since March 2021.
Website, pricing, platforms and company facts side by side.
|
|
|
|
|---|---|---|
| Website | file-extensions.org | clientforms.app |
| Pricing | — | |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of File-Extensions.org 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.


No analysis of File-Extensions.org yet.
Overall verdict
Why this product is good
Recommended for
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing File-Extensions.org 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 File-Extensions.org and ClientForms.app. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


File-extensions.org lists following files for .3 extension:. Source: over 3 years ago
Tracking ClientForms.app since Dec 2025.
When comparing File-Extensions.org and ClientForms.app, you can also consider the following products.

FileInfo is the central file extensions registry and contains a database of over 10,000 file types.
Compare FileInfo.com to File-Extensions.org or ClientForms.app:

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

It's All About Files, Software, Online Tools - 100% Free
Compare FileProInfo to File-Extensions.org or ClientForms.app:

GroupDocs is a web-based service for online document sharing, collaboration and management.
Compare GroupDocs to File-Extensions.org or ClientForms.app:

A group of free document automation apps to view, parse, convert & compare popular file formats.
Compare Groupdocs.app to File-Extensions.org or ClientForms.app:
