KALSU

Terms of Use

Last updated: January 2025

The short version: KALSU is a free, open-source file transfer tool. Use it responsibly and legally. We provide it as-is with no warranties.

1. Acceptance of Terms

By accessing or using KALSU ("the Service"), you agree to be bound by these Terms of Use. If you do not agree to these terms, do not use the Service.

2. Description of Service

KALSU is a peer-to-peer file transfer service that enables users to send files directly between web browsers using WebRTC technology. The Service:

Facilitates direct browser-to-browser file transfers
Does not store, access, or process the files being transferred
Provides temporary signaling to establish P2P connections
Is provided free of charge

3. User Responsibilities

You agree to use the Service only for lawful purposes. You must NOT use KALSU to:

Transfer files that violate any applicable laws or regulations
Share copyrighted material without authorization
Distribute malware, viruses, or other harmful software
Transfer illegal content including but not limited to child exploitation material
Harass, threaten, or harm others
Attempt to disrupt or overload the Service
Circumvent any security measures or rate limits

You are solely responsible for all files you transfer using the Service.

4. No Warranty

THE SERVICE IS PROVIDED "AS IS" AND "AS AVAILABLE" WITHOUT WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO:

Warranties of merchantability or fitness for a particular purpose
Warranties that the Service will be uninterrupted, secure, or error-free
Warranties regarding the accuracy or reliability of any information
Warranties that files will transfer successfully or completely

5. Limitation of Liability

TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE OPERATORS OF KALSU SHALL NOT BE LIABLE FOR:

Any direct, indirect, incidental, special, consequential, or punitive damages
Loss of data, profits, or business opportunities
Failed, incomplete, or corrupted file transfers
Service interruptions or downtime
Security breaches or unauthorized access
Actions of other users or third parties
Content transferred by users through the Service
Exposure of IP addresses inherent to WebRTC P2P connections

You use the Service entirely at your own risk.

6. Service Availability

We do not guarantee any level of service availability. The Service may be:

Temporarily unavailable for maintenance
Subject to interruptions beyond our control
Modified or discontinued at any time without notice

There is no Service Level Agreement (SLA) for this free service.

7. Termination

We reserve the right to:

Block access from specific IP addresses or regions
Implement rate limits to prevent abuse
Terminate or suspend the Service at any time

8. Intellectual Property

KALSU is open source software licensed under the MIT License. The source code is available at github.com/roopen219/kalsu.

You retain all rights to the files you transfer. We claim no ownership or rights to your content.

9. Third-Party Services

The Service relies on third-party infrastructure, including:

Cloudflare (hosting and security)
WebRTC (browser technology for P2P connections)

Your use of these technologies is subject to their respective terms and policies.

10. Indemnification

You agree to indemnify and hold harmless the operators of KALSU from any claims, damages, losses, or expenses arising from:

Your use of the Service
Your violation of these Terms
Your violation of any laws or third-party rights
Content you transfer using the Service

11. Governing Law

These Terms shall be governed by and construed in accordance with applicable laws, without regard to conflict of law principles.

12. Changes to Terms

We may modify these Terms at any time. Changes will be posted on this page with an updated "Last updated" date. Continued use of the Service after changes constitutes acceptance of the new Terms.

13. Severability

If any provision of these Terms is found to be unenforceable, the remaining provisions will continue in full force and effect.

14. Contact

For questions about these Terms, please open an issue on our GitHub repository.