Lume is a free, open-source desktop client for Nostr, built for Windows users who want a dedicated app for the decentralized social network instead of a browser tab. It suits people who already use Nostr and want a native window for their feed, as well as newcomers who want a simple app to explore the network.
The project is written in Rust and released under the GPL-3.0 license. The latest version is 24.11.8, and the code was last updated in December 2025, so the project looks actively maintained. Windows users can install Lume with the Scoop package manager using a single command. The sections below cover features, installation, safety, and how Nostr clients work.
What Is Lume and Who Is It For?
Lume is a Nostr client, meaning an application that lets you read and publish messages on Nostr, an open protocol for social networking. Unlike a traditional social platform, Nostr has no single company that owns the network. Your identity is a cryptographic key pair, and messages are sent to relays that anyone can run.
Lume is aimed at Windows users who want a desktop experience. Typical readers include people who already use Nostr on other devices and want a larger screen for following conversations, developers curious about Rust-based social software, and privacy-minded users who prefer open-source tools they can inspect.
It may be less suitable for someone who wants a phone app for posting on the go. Anyone new to Nostr should spend a few minutes learning the basics before judging any client.
How Nostr Clients Connect to Relays
Nostr works differently from platforms such as X or Facebook. Users publish signed events, and relays store and share them. A client like Lume connects to one or more relays, requests posts from the accounts you follow, and displays them. If one relay is slow or offline, the same content can often be reached through another.
Relay choice shapes what you see and how quickly messages arrive. Some relays focus on particular communities, while others are general purpose. Trying a few and noticing which ones load your feed reliably is a practical way to tune your setup.
Your private key signs every post, so anyone who obtains it can publish as you. Clients usually let you import an existing key or generate a new one. Store the key carefully, since losing it means losing access to that identity.
Practical Use Cases for a Desktop Nostr Client
A desktop client suits several everyday situations. Someone who reads long threads might keep Lume open on a second monitor while working in other programs. A writer or researcher can follow specific topics and review interesting posts without filling a browser with tabs. Developers testing Nostr-based tools may use a desktop client alongside command-line utilities to check how events appear.
Another scenario is comparing clients. Because Nostr is an open protocol, the same account can be used in several apps. You might post from one client and read from another, then keep whichever one fits your routine. Since Lume costs nothing to try, it is a low-risk addition to that comparison.
Key features
Native desktop client
Built with Rust
Open source under GPL-3.0
Free to try
Installation with Scoop
Supported coins
Lume works with the Nostr network rather than with a list of cryptocurrencies. It is a social client, so it handles posts, profiles and relay connections, not coin balances or trading. Readers looking for a wallet or exchange tool should look at other categories.
How to install Lume on Windows
PS> scoop install lume- 1
Check that Scoop is installed
Lume is distributed for Windows through the Scoop package manager. Open PowerShell and run scoop --version. If the command is not recognized, install Scoop first by following the instructions in its official documentation, then reopen PowerShell.
- 2
Install Lume with one command
Run scoop install lume. Scoop downloads the package, places it in its managed apps folder and creates a shortcut so you can launch the program from the Start menu or the command line.
- 3
Use an alternative source if you prefer
If you do not want to use Scoop, download the Windows package from the official website at https://lume.nu/ or from the Releases page of the GitHub repository at https://github.com/lumehq/lume. Only download from the official website or the project's GitHub repository, not from mirror sites.
- 4
Verify the file before running it
Compare the SHA-256 checksum of the downloaded installer with the value published on the official site or the GitHub Releases page, if one is listed. In PowerShell, Get-FileHash calculates it. If the values do not match, do not run the file.
-
Launch and update
Open Lume from the Start menu or run the lume command. To update later, run scoop update lume, which keeps the installed version aligned with the Scoop package.
How to use Lume
Lume is designed to get you reading and posting quickly, but Nostr has a few concepts that make the first session smoother. Follow these steps the first time you open the app.
- Launch Lume and set up your Nostr identity. If you already have a key from another client, import it so your follows and profile carry over. Otherwise generate a new key and store it somewhere secure.
- Check which relays the client is using. Relays determine which posts you receive, so a few reliable relays usually work better than many unreliable ones.
- Follow accounts you know or explore topics that interest you. Build your feed gradually so you can see which sources are useful.
- Publish a short test note. Confirm that it appears on the relay you chose and, if you use one, in another Nostr client.
- Unfollow accounts that clutter your feed. Adjusting who you follow is the most direct way to shape what you see.
- Back up your private key. If you lose it, you cannot recover that identity, and no one else can restore it for you.
Pros & cons
- Free to download and use
- Open source under GPL-3.0, so the code can be inspected
- Written in Rust
- Simple installation on Windows with Scoop
- Recent code update in December 2025 suggests ongoing maintenance
- Dedicated desktop window separate from the browser
- Desktop only, so it does not replace a phone app for posting on the go
- Scoop installation assumes comfort with PowerShell and the command line
- Nostr keys and relays take time to understand, which can slow down a first session
Is Lume safe?
Lume is open source and published on GitHub, which lets you review the code yourself. Still, download only from the official website or the project's GitHub Releases page, and avoid unofficial mirrors that may bundle altered files. Verify the SHA-256 checksum against the published value before running any installer. Keep your antivirus active during installation. Some security tools flag new or unsigned binaries, so treat a warning as a reason to check the file, not as a reason to disable protection. Your Nostr private key deserves the same care as a bank password. Never enter it on a third-party website that asks for it, and never share it in messages. Anyone who gets your key can post as you.
- Official source only. Download from lume.nu. 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
Lume sits among several Nostr clients, and the right pick depends on how you plan to use it. Gossip is another desktop client written in Rust, so readers choosing between the two are weighing similar technical foundations against differences in interface and features that are best tested firsthand. Vega targets desktop use across platforms, which matters if you also run Linux or macOS. Coop focuses on private messages, so it suits people who mainly want direct conversations on Nostr. For command-line users, Nostr Commander RS and NAK offer text-based workflows instead of a graphical window. Blockcore Notes is a Progressive Web App, so it can be installed from the browser rather than through a package manager.
Specifications
- Price
- Free
- Type
- Open source
- License
- GPL-3.0
- Latest version
- 24.11.8
- Last update
- 19 Dec 2025
- Windows support
- Yes (available via Scoop)
- Official site
- lume.nu
- Source code
- github.com/lumehq/lume
- Install command
- scoop install lume
Frequently asked questions
Yes, Lume is free. The project is released under the GPL-3.0 license, so you can download it, use it and study the source code without paying. Since it is a desktop client rather than a paid service, there is nothing to subscribe to before you start reading or posting on Nostr. If you later want to modify or redistribute the program, the license sets the conditions.
Lume can be installed safely if you confirm where the file came from and check its checksum before running it. The code is open source and hosted on GitHub, which makes independent review possible. Keep your antivirus active, and never type your private Nostr key into a website that asks for it. Most risk comes from fake download pages rather than from the client itself.
Open PowerShell and run scoop install lume once Scoop itself is installed. Scoop downloads the package and sets it up in its managed apps folder. To update later, run scoop update lume. If you prefer not to use Scoop, the official website and the GitHub Releases page offer alternative downloads.
Nostr is an open protocol for decentralized social networking. Users sign their posts with a cryptographic key and send them to relays, which store and share messages. Because no single company controls the network, you can switch between clients while keeping the same identity. Lume is one of many apps built on this protocol.
Yes. Lume's source code is published on GitHub under the GPL-3.0 license. You can read the code, compile it yourself or propose changes. The license requires that modified versions you distribute also remain open under the same terms, which keeps derivative work transparent.
Gossip and Vega are both desktop Nostr clients worth comparing. Gossip is also written in Rust, while Vega is described as cross-platform. If you prefer the command line, Nostr Commander RS and NAK offer text-based tools. The best choice depends on whether you want a graphical window, a specific platform or scripting access.
Verdict
Lume is a sensible choice for Windows users who want a free, open-source desktop client for Nostr. It fits readers who are comfortable with a little command-line setup and who want a dedicated window for their feed. If you mostly post from a phone or prefer a point-and-click installer, look at other clients first. If you decide to download Lume for Windows, check the latest version on the official website before installing, and compare it with one or two alternatives using a test account.