
Omni Calculator
calculator.net
Build vs. Buy Calculator
DeveloperToolStack
DevNestTools
DevTools Advanced
DevTools.fit
Free, no-signup calculators for the money side of building software and freelancing
YouTube VR
Netflix
BBC Taster VR
Electronauts
Firefox Reality
Virtual Desktop
VRTM
A new operating system beyond the limits of your monitor

Which is more popular?
Based on our record, VR-OS seems to be more popular. It has been mentioned 4 times since March 2021.
Website, pricing, platforms and company facts side by side.
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VRO
VR-OS
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|---|---|---|
| Website | devfinancetools.com | matthaeuskrenn.com |
| Pricing | — | |
| Company | 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.

DevFinanceTools is a collection of free, no-signup calculators for the money side of building software and freelancing. Everything runs in your browser — no account, no tracking beyond basic page-view analytics — and every tool shows its formulas and benchmarks so you can check the maths...
No description of VR-OS yet.
What each product offers, as listed by its team.

Possible disadvantages
Walkthroughs and reviews on video.
No DevFinanceTools videos yet. You could help us improve this page by suggesting one.
VR-OS: Full Demo
How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using DevFinanceTools and VR-OS. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.

Tracking DevFinanceTools since Aug 2026.
I'm trying to build a very simple version of an OS for myself. I'm currently designing a mock version of it in Unity. Take this popular example as reference: https://matthaeuskrenn.com/vr-os/. Source: over 3 years ago
Check out Mattheus Krenn's VR-OS It's one of the projects built around a fully VR GUI for computing. Instead of monitors, the idea is you just use a headset. Source: over 4 years ago
While searching for a better workflow, I stumbled upon this prototype called VR-OS (https://matthaeuskrenn.com/vr-os/). What really stuck with me is the idea of distinguishing between the free floating space (360° to place your windows),... Source: almost 5 years ago
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See what's next. Watch anywhere. Cancel anytime.
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Should you build an internal tool? Or just buy it?
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VR content from the BBC to your smartphone
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