We build the software companies run on.
We are an Italian software house. We design and build business software, iOS and Android apps and web platforms, from process analysis to release. The same team stays on to look after the system after delivery.
This site works like an operating system. Open apps from the desktop or the dock, change the wallpaper with a right-click, search with Ctrl K.
Auris
The player for people who really listen.
Auris is a music player for Windows built for audiophiles. It plays high-resolution files bit-perfect and includes analysis tools that other players need plugins for: dynamic range, loudness, clipping, BPM and key.
- System
- Windows 10 and 11
- Distribution
- Microsoft Store, no subscription
- Formats
- FLAC, WAV, AIFF up to 32-bit / 384 kHz. DSD64, DSD128, DSD256
- Output
- WASAPI Exclusive, bit-perfect
- First release
- October 2025, updated regularly
Built-in audio analysis
Mastering-studio tools inside an everyday player.
DR Meter
Measures the dynamic range of your whole library and shows which albums have the best mastering.
LUFS and clipping
Integrated loudness measured the way streaming platforms do, with inter-sample peak detection.
Parametric EQ + AutoEQ
Peak, Shelf, Notch and Bandpass filters. Correction profiles for over 5,000 headphones.
BPM and key
Detects the tempo and musical key of every track. Useful for DJs and musicians.
Library grade
An S-to-F grade for your collection, based on lossless share, hi-res content, bit depth and sample rate.
Real-time VU meter
Shows the output signal after EQ, clipping included.
Playback
WASAPI Exclusive
Bypasses the Windows mixer: a bit-perfect signal to your DAC.
Hi-Res and DSD
Up to 32-bit / 384 kHz. DSD64, DSD128 and DSD256.
Gapless and crossfade
Seamless track transitions, crossfade adjustable from 1 to 12 seconds.
ReplayGain and crossfeed
Even volume by track or album, less fatiguing headphone listening.
Synced lyrics
Lyrics scroll with the music, fetched automatically.
Library
Batch tag editor, album art finder, duplicates, listening stats, Last.fm and Discord.
Auris and other players
| Feature | Auris | foobar2000 | MusicBee | AIMP |
|---|---|---|---|---|
| DR Meter | Built-in | Plugin | No | No |
| LUFS Meter | Built-in | Plugin | No | No |
| Clipping detection | Built-in | No | No | No |
| Parametric EQ | Full | Plugin | Limited | No |
| AutoEQ | 5000+ profiles | No | No | No |
| BPM and key | Built-in | Plugin | No | No |
| WASAPI Exclusive | Yes | Yes | Yes | Yes |
Source: comparison published on the Auris website.
Version history
v1.1.13 January 2026 · latest
- In-app update notifications
- Optimizations for very large libraries
v1.1.6 December 2025
- Gapless, crossfade, BPM and key
- Library grade, duplicates, tag editor
- Redesigned interface with dynamic colors
v1.1.0 November 2025
- DR Meter, LUFS, clipping detection
- Parametric EQ and AutoEQ
- DSD and files up to 32-bit / 384 kHz
v1.0.0 October 2025
- First release: hi-res, WASAPI Exclusive, library and playlists
Paracausality OS
Version 2026
- Processor
- Espresso, on a continuous loop
- Memory
- Every project we have delivered
- Serial number
- IT04869410615
- DebugThe developers' minesweeperPlay
- Deploy RunnerShip your code to productionPlay
- CompilaFalling code blocksPlay
- VersionsMerge releases up to v1.0Play
- Code SprintType code as fast as you canPlay
- FirewallDefend the server from attacksPlay
- MemoryPairs of our projectsPlay
- SnakeEat the bugs, don't bite your tailPlay
Every game has its own weekly leaderboard.
Arrows or WASD to move · Space to start and pause
Click to check a cell · right-click to place a fix · click a number to check its neighboursTap to check · long-press or use Fix mode to mark a bug
Space, up arrow or click to jump · hold to jump higherTap to jump · hold to jump higher
← → to move · ↑ to rotate · ↓ to go down · space to drop · P to pauseSwipe to move · tap to rotate · swipe down to drop
Arrows or WASD to slide the versionsSwipe to slide the versions
Type the code lines exactly as shown · 60 seconds · speed and accuracy both count
Move the mouse or use ← → · click or space to launchDrag your finger to move · tap to launch
Find the project pairs as fast as you can
Wallpaper
Wallpapers are animated and generated in code. Your choice is saved in this browser.
Appearance
Starts after 2 minutes of inactivity.
Now and then a bug crawls across the screen. Move the pointer close and squash it.
Dock
Language and sound
Short, subtle sounds when windows open, for notifications and on unlock.
Paracausality OS
The Paracausality Systems website, built as an operating system. Every project is an app, every section a window.
- Company
- Paracausality Systems
- VAT no.
- IT04869410615
- Shortcuts
- Ctrl K to search · Esc closes the front window · right-click the desktop for wallpapers
Book a call
Days with a dot have free slots. We confirm the time by email.
New project
Tell us what the software needs to do. We reply with the right questions or a call proposal.
Mon–Fri 9–18 CET · VAT IT04869410615