Transparency
See what is happening without chasing people
Give the whole team a clear view of what is moving, what is blocked, and what needs attention. OSOI brings projects, updates, and day-to-day operations onto one screen .
One Source of Information for Teams
Connect site and office. Track time, manage tasks, keep the team aligned, capture notes, and share documents in one app built for the whole team.
One system. Less noise.
Work that gets done.
OSOI replaces scattered tools and disconnected conversations with one straightforward place to run work. The point is not more software. The point is better work with less friction.
Tasks
See it all and keep everyone aligned
Track tasks across projects and understand what every team member is focused on. OSOI is built to give clarity without adding another layer of chaos.
Works Offline
Accessible 24/7 on any device
OSOI keeps working in the field , on the road, and in weak-signal environments. Your team can keep moving and sync everything back when connection returns.
Docs & Files
All documents and files in one place
Keep documents, drawings, photos, and files easy to find and quick to open. Everything stays connected to the work, so the right file is always within reach.
Communication
Don't just talk. Get the work done.
Move beyond scattered WhatsApp groups and endless email loops. Keep conversations connected to the work itself so nothing gets forgotten or lost in a side channel.
Control
Stay in control of time, cost, and resources
Keep deadlines, responsibilities, costs, and team capacity visible before things go off course. The goal is simple: fewer surprises, better decisions, and tighter operations.
Simple to start. Built to be used.
There are plenty of tools to manage projects and daily work. Most teams have tried a few. Most fail. They fail because they are too complicated , and people give up. That’s where OSOI is different. It stays simple, delivers value from day one , and we work with you to make it happen in practice.
This is how it works:
You show us how your team works today
We learn how you operate, what matters most, and where your biggest challenges are.
We prepare a setup that fits you
We shape OSOI around your real workflow and keep the rollout focused, simple, and fast.
We stay with your team until it clicks
We help your team use the system in real work, so the change becomes visible within days.
Why teams work better with OSOI
Every project, every job site, all in one place.
See what's done, what's not, and what's urgent across all your jobs, wherever you are.
Every working hour recorded, every day.
No chasing the team for timesheets. Invoice your customers faster.
Quick check-in on everyone.
See who's on-site, who's off-site, and what they're working on. Save yourself hours of phone calls.
Invite clients with one click and share updates in seconds.
No more back-and-forth calls or emails.
It's simple.
If your team knows how to use WhatsApp, they'll know how to use OSOI. No complex training is needed.
It's not just another chat app.
It's built for getting work done. Chat like always, but now tasks, timesheets, and updates stay organized in one place.
No signal? No problem.
Keeps your team moving even in weak coverage. Works offline and syncs automatically later.
Nothing gets lost.
Every message, task, document, and piece of information stays available in OSOI.
Find everything in one place.
No more digging through emails, WhatsApp, or five different apps. Finish jobs faster.
Software only matters if it is actually being used by people.
These examples show the kind of value that appears when the product works.
Christian Pichler
Architect, CEO of CAPP
Vienna, Austria
OSOI gives us a clearer structure for projects, time tracking, and day-to-day coordination. That makes it easier to stay on top of budgets, run work more profitably, and keep the whole office aligned.
Anko Ernst
CEO OF KHM
Magdeburg, Germany
OSOI has quickly established itself with us as a versatile and reliable tool for project management. What convinced us most is its clear structure, easy handling, and the ability to make tasks and progress transparent both within the team and towards our clients.
Jan Proksa
Architect, CEO of Proksa Architects
Vienna, Austria
OSOI helps us maintain an overview of timelines and budgets in projects on a daily basis. It is a great tool for architecture offices that want to bring more structure into their workday.
Curious how OSOI could fit your team?
Book a discovery call with our team so we can learn how you work, what slows you down, and how we could help.
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OSOI 0.7.7 - Introducing standalone Documents module and better Notes
A clearer documents workflow, stronger note editing, and a smoother planning flow make daily coordination in OSOI faster and easier.
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At SEEBBE 2026, OSOI will meet construction and operations companies in Serbia and show how office and field teams can stay aligned in one work management system.
Read updateOSOI 0.7.6 - Tabs, Multi-Window Workflows, and Timeline Planning
OSOI 0.7.6 introduces tabs, multi-window workflows, a new timeline planning view, desktop improvements, widgets, and major speed and reliability upgrades.
Read update