OpenKOS
OpenKOS: A free, open-source option for technical teams managing rental properties on their own infrastructure. Ranked #164 of 267 in Property Management Software by our editors (3.0/10); pricing: Free plan; best for technical teams wanting self-hosted property software.
At a glance
- Editor score3.0 / 10
- PricingFree plan
- Best forTechnical teams wanting self-hosted property software
- Free planYes
- Paid fromFree
- Online rent collectionYes
- Facts checked22 Sep 2026
Where it wins
- Covers properties, units, leases, tenants, invoices, and maintenance workflows
- Tenant portal supports invoice access, payment submission, and verification tracking
- Plugin architecture supports notifications, payment gateways, dashboards, and settings
Where it doesn't
- Deployment requires a web server, queue worker, scheduler, and PostgreSQL
- Web-only access means there are no mobile apps
- The project is marked v0.1 Alpha and may include breaking changes
Our verdict on OpenKOS
OpenKOS is a free, open-source, self-hosted property management application for boarding houses, apartments, and rental properties. It is aimed at property operators and technical teams that want to manage their own infrastructure and data. The feature set covers multiple properties and units, capacity, rates, availability, status tracking, leases, tenants, invoices, payment verification, rent reminders, and maintenance tickets. Role-based access supports owners, administrators, and staff, while tenants receive a portal for leases, invoices, payment submission, and verification status.
The platform fits teams that need control over deployment and room to adapt the system. Its plugin architecture supports notifications, payment gateways, dashboards, and settings, with integrations for WhatsApp, SMTP email, and payment gateways. Notification drivers can handle automated or manual rent reminders, while maintenance tickets include assignment, priority, and status workflows. These capabilities make OpenKOS broader than a basic rent ledger, particularly for operators coordinating tenant communication, payment review, and property upkeep across multiple locations.
The main trade-off is operational responsibility. Self-hosted deployment requires a web server, queue worker, scheduler, and PostgreSQL, so it suits teams with the technical capacity to install and maintain a Laravel and React application. The project is marked v0.1 Alpha and actively developed, with potential breaking changes, which matters for operators seeking a production-hardened system. Choose OpenKOS if free open-source software, self-hosting, tenant portals, and extensibility are priorities. Consider another option if mobile apps, a more mature release, or deeper accounting workflows are central requirements.
Your product? Our editors can test OpenKOS in depth and publish a review, labelled as paid · from $149/mo →
OpenKOS pricing
OpenKOS fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Online rent collection | Yes |
| Tenant portal | Yes |
| Maintenance management | Yes |
| Property accounting | Not verified |
| Included units | Not verified |
| Lease management | Yes |
| Mobile app coverage | Web only |
| Deployment | Self-hosted |
| Platforms | Web |
| Support | Docs |
| Built for | Solo, Small business, Mid-market (editorial estimate) |
| Integrations | 3 integrations: WhatsApp, SMTP email, payment gateways |
| Pricing | Free plan |
| Website | openkos.id |
| Facts checked | 22 Sep 2026 |
OpenKOS integrations
OpenKOS lists 3 integrations on its own site.
- SMTP email
- payment gateways
Alternatives to OpenKOS
- RealPage OneSiteA connected multifamily suite spanning leasing, finance, maintenance, compliance, and automation.9.2
- GuestyA broad short-term rental platform with channel, operations, and owner-management tools.9.0
- RealPage Commercial Property ManagementA focused commercial leasing system for accounting, recoveries, tenant service, and portfolio reporting.8.8
See all OpenKOS alternatives →
Used OpenKOS? Be the first to review it
The editor score above is our own research. What this page doesn't have yet is a reader's view — what you used OpenKOS for, what worked and what didn't. No stars are seeded and no review is paid for; an editor reads every one before it appears.
Write a reviewTwo minutes · verified accounts only · read by an editor before it appears
Featured on iTechGuides
OpenKOS is listed in our Property Management Software directory. Add the badge to your site — it links back to this page.
<a href="https://www.itechguides.com/products/openkos/"><img src="https://www.itechguides.com/best/badge/openkos.svg" alt="Featured on iTechGuides" width="230" height="46"></a>
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
Last updated · How we research and update