This project is a work in progress. Expect bugs and missing features.
Tensamin
Self-hosted messages paired with high customisability
Made in Germany (Lower Saxony)
Features
1. Custom channels
As long as it compiles to WASM, you can choose any programming language you like! It can then run on both the client and server sides. You can create custom plugins with full control over the entire community, or build a channel that does whatever you want. The possibilities are endless!
2. It's fast as f*ck boooiii
MTP is a custom protocol based on QUIC that provides high-speed, low-latency connections. It is so fast that there is no need to wait for a connection. It is heavily optimised and saves any bits it can.
3. High customizability
The mobile app, desktop app and web app will always be consistent in terms of UI and theming options. Get creative and make changes such as injecting custom CSS or providing a base16 colour scheme. Alternatively, you can just change the primary colour.
4. Selfhostability
With an Iota, you can host your own messages, ensuring they are not scattered across different devices and requiring extra time to sync. As the Iota is self-hosted, you can upload files as large as your storage allows.
5. There are three connection types to choose from
Funding
This is our future goal! At the moment we're not able to proceed due to german law (it sucks):
Methanium cLLC is a non-profit organisation that owns and manages Tensamin LLC, its for-profit subsidiary. This model ensures long-term control over Tensamin and related initiatives while generating revenue to support Methanium's broader mission. Tensamin LLC is committed to reinvesting its profits into projects that require funding and development. Tensamin LLC is in a position of strength, with Methanium's funding ensuring stability, even in the event of a suboptimal quarter. Methanium does not engage in the practice of accumulating wealth or disbursing substantial sums to individuals. Tensamin LLC is a for-profit entity. It will provide quarterly financial reports.
What are our costs?
Like every online service, we have to pay for server costs and bandwidth (sadly, they do not grow on trees). However, since you prefer to store messages on your own devices, we do not have to operate expensive storage servers. We are able to fund our operational expenses thanks to your kind contributions. For the most generous users who want extra bandwidth, we provide a subscription.
Commercial Usage
If Tensamin is used in a commercial context, it is available for free use by companies with fewer than 20 employees. Otherwise these charges apply:| Users | Pr Price per Month |
|---|---|
| < 20 | Free |
| 20 - 50 | 10€ |
| 50 - 100 | 25€ |
| 100 - 200 | 80€ |
| 200 - 500 | 200€ |
| 500 + | Please contact us at business@tensamin.net |
Comparison
| Feature | Tensamin | Discord | Signal | Stoat | Matrix | |
|---|---|---|---|---|---|---|
| Message Encryption | | No | | Yes | | Yes |
| Voice Encryption | Yes | Yes | | Yes | No | Yes |
| File size limit | ∞ | 500mb | 2gb | 500mb | 20mb | ∞ |
| Non-profit | | No | No | Yes | No | Yes |
| Open Source | | No | No | Yes | Yes | Yes |
| Decentralised | Yes | No | No | No | Yes | Yes |
| Hybrid Decentralisation | Yes | No | No | No | No | Yes |
| Communities with programmable channels | Yes | No | No | No | No | Partly |
| Sending messages to other messaging services | | No | | No | No | |
| Selfhostable | Yes | No | No | No | Yes | Yes |
Do you want a specific category or have corrections? Email us at contact@tensamin.net
Last updated: 21.4.2026
