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Zebralette
Open-source subtractive-hybrid synthesizer formerly sold commercially as Vember Audio Surge.

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, Surge XT seems to be more popular. It has been mentioned 179 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | surge-synthesizer.github.io | clientforms.app |
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| Company | Startup from the United States | — |
| Listed in |
In their own words, as submitted to SaaSHub.


Surge XT is an open-source hybrid synthesizer and the synth which started the Surge Synth Team project!
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
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Free VST - Surge Synthesizer plugin
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 Surge XT 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 Surge XT 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.


- Surge XT - open-source synthesizer with literally 10k presets built in: https://surge-synthesizer.github.io/. - Source: Hacker News / about 1 year ago
Good stuff! I started getting in to this at the start of the year. Already had an old, dusty MicroKORG and MIDI interface to use it as a controller, but recently splashed out on a bigger controller as the Korg's tiny keys were hurting... - Source: Hacker News / about 3 years ago
Https://surge-synthesizer.github.io/ and https://asb2m10.github.io/dexed/ should work like a charm. Source: over 3 years ago
Tracking ClientForms.app since Dec 2025.
When comparing Surge XT and ClientForms.app, you can also consider the following products.

Vital is a spectral warping wavetable synthesizer with drag'n'drop modulation workflow and animated preview of the synth's inner workings where needed. Comes with many modulation sources (including audio-rate), MPE support and FX chain.
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NovoPsych is a tool that is used for outcome monitoring via conducting psychological tests online.
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ZynAddSubFX is an open source software synthesizer for Linux, Mac OS X and Microsoft Windows.
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Synth1 is a software synthesizer. Functionally it is modeled on the Clavia Nord Lead 2 Red Synth.
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TAL-NoiseMaker is an improved version of TAL-Elek7ro and has a completely new synth engine and a...
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