Kovri for Windows is a C++ implementation of the I2P anonymous network, written for people who want a private, untraceable networking layer built as native code. It is free and open source, aimed at privacy-minded users, developers and researchers who study network-level anonymity. Its source code sits under the Monero project's GitHub account, and the project documentation mentions Monero (XMR).
Read this before you install: the project has not seen a code update since 2018. The latest version is the alpha release v0.1.0-alpha-rc3, the last code update dates to September 7, 2018, and the repository has moved to GitLab. Treat Kovri as an experimental download rather than a production tool. If you only want to use I2P-based services, check whether a maintained I2P router fits your needs before choosing this build.
What Is Kovri and How It Differs From I2P
Kovri is a software implementation of the I2P anonymous network, not a separate cryptocurrency or a wallet. I2P is a network layer that lets applications communicate through encrypted tunnels, and an implementation like Kovri supplies the code that builds, maintains and uses those tunnels.
That distinction matters. People often search for crypto clients expecting a coin wallet or a full node that stores a blockchain, but Kovri's job is networking. Think of it as the transport layer under privacy-focused services, not a place to hold funds.
The project summary describes the goal as a secure, private and untraceable implementation. In practice, the program is judged by how well it handles encrypted routing, which is a different skill set from validating blocks or signing transactions. Readers who need a Monero wallet or a Monero node should look at tools designed for that job.
Who Kovri Is For Today
Kovri suits a narrow group. Developers and researchers who study anonymous networking can use it to read the code, compare design choices and test ideas in a controlled lab setting. Privacy-minded users who already understand I2P may also find it interesting as a native alternative to other implementations.
It is a poor fit for everyday tasks. If you need software to rely on for daily sensitive activity, an alpha build with no code updates since 2018 is a weak choice. Actively maintained projects are a safer foundation for production use.
For example, a student writing a paper on onion routing and garlic routing might build the program, examine how tunnels are constructed in the source, and compare that with the documentation. That kind of study uses the code as a reference, not as a daily tool.
How Anonymous Networks Like I2P Work
Anonymous overlay networks split a connection into several hops. Instead of sending data directly from you to a destination, the network relays it through intermediate routers, and each router knows only its immediate neighbors. This makes it harder for an observer at one point on the path to link sender and receiver.
I2P builds on this idea with tunnels. A sender and a receiver each set up short paths of relays in one direction, and these paths are combined into a route. Keys are negotiated so that intermediate nodes cannot read the content. The trade-off is speed, since every hop adds latency, and privacy depends on the wider network having enough active participants.
If you are comparing programs, ask how they handle routing, how they find peers and how actively they are maintained. Those questions matter more than any single feature list.
Key features
Native C++ codebase
I2P network implementation
Privacy-oriented design
Free and open source
Supported coins
The project documentation mentions Monero (XMR). Kovri's source code lives in the Monero project's repository, so that connection concerns project origins and related context, not a wallet or mining feature. Beyond that, the program is built around the I2P network rather than a list of coins.
How to install Kovri on Windows
- 1
Get the official build
Download the Windows build or installer only from the official website or the project's GitHub Releases page. Because the repository has moved to GitLab, follow the project notice that points to the new location to confirm where current files are published.
- 2
Verify the file
Compare the file's SHA-256 checksum with the value published alongside the download. If no checksum or signature is published for the build, do not install it.
-
Install and run
Run the installer, or extract the Windows build to a folder you control, then launch the program. Keep it in its own directory and review its settings before connecting, since this is an alpha release.
How to use Kovri
Kovri is a network program rather than a point-and-click app, so setup is mostly about starting the router and confirming that it connects. The steps below assume the Windows build runs correctly on your machine.
- Start the program from its install folder and let it run while it connects to the network.
- Check the log output or status messages for connectivity or configuration errors before you do anything else.
- Review the configuration options in the project documentation, paying attention to the settings that affect networking and logging.
- Point the applications you want to route through I2P at the local endpoints described in the documentation.
- Test a simple connection first, and confirm that traffic flows as expected before using the setup for anything sensitive.
- Stop the program when you finish. Install a newer build only after you have confirmed its source and checksum.
Pros & cons
- Free and open source, with publicly available source code
- Native C and C++ codebase that suits low-level study
- Focused on a specific privacy network, I2P
- Windows build or installer available
- Alpha release (v0.1.0-alpha-rc3) not suited for critical use
- Last code update on September 7, 2018
- Repository has moved to GitLab, which can complicate finding files
- Not a wallet, miner or full node for any coin
Is Kovri safe?
Kovri is networking software, so treat it with the same caution as any program that handles your traffic. The last code update came in September 2018 and the repository has moved, so the project should be considered unmaintained and you should not expect security fixes. Download only from the official website or the project's GitHub Releases page, and verify the SHA-256 checksum before running the file. Never enter a seed phrase or wallet key on third-party websites. Antivirus tools may flag unfamiliar networking software, so confirm the checksum rather than disabling protection. Check the latest version on the official website before installing anything.
- Official source only. Download from github.com/monero-project/kovri. Ignore ads and lookalike domains.
- Check the SHA-256. Compare the installer hash with the value the developer publishes before running it.
- Never share your seed phrase. No developer, support agent or website — including CryptApps — will ever ask for it.
Alternatives
Kovri differs from the other programs in this group because it implements a privacy network rather than a blockchain. Bitcoin Core, Geth, Nethermind and OpenEthereum are node clients for specific chains: they validate blocks and track chain state, which takes disk space and time to sync. Kovri routes traffic instead. If you want a node for a cryptocurrency, one of those clients fits better. If you want to study or experiment with anonymous routing, Kovri is the more relevant option, though its stalled development is a serious drawback. OpenEthereum is a closed project, so read it as history.
Specifications
- Price
- Free
- Type
- Open source
- License
- —
- Latest version
- v0.1.0-alpha-rc3
- Last update
- 7 Sept 2018
- Windows support
- Yes (Windows build or installer)
- Source code
- github.com/monero-project/kovri
Frequently asked questions
No recent maintenance is visible. The last code update was on September 7, 2018, the latest release is the alpha v0.1.0-alpha-rc3, and the project notice says the repository has moved to GitLab. Expect no security fixes or new features, treat the build as experimental, and check for newer official releases before installing anything.
It depends on what you need. Kovri is free and open source, so its code can be reviewed, but its alpha status and lack of updates since 2018 make it a poor choice for sensitive activity. Verify the SHA-256 checksum of any download, and do not rely on the software for anything where a failure would cause real harm.
Not exactly. I2P is the anonymous network, while Kovri is a C++ implementation of that network. Other implementations of I2P exist, so Kovri is one way to connect to the same network rather than the network itself.
No. Kovri is a network implementation, not a wallet, miner or full node. The Monero mention in its documentation relates to the project's origins, so you would need separate software for Monero transactions or mining.
Usually not. Compilers and other developer toolchains are needed only to build from source. If you use the ready-made Windows build or installer, you download, verify and run it without installing extra development software.
It depends on your goal. For a Bitcoin node, Bitcoin Core is a common choice, and for Ethereum, Geth or Nethermind suit different preferences. For anonymous networking, look for a maintained I2P router rather than an archived alpha build.
Verdict
Kovri is a free, open source C++ implementation of the I2P anonymous network, but it is an alpha build with no code updates since September 2018 and a repository that has moved. It suits developers and researchers who want to study native anonymous networking code. It is not a good choice for daily privacy needs or sensitive activity. If you still decide to try it, verify the checksum and treat the software as experimental.